Entries |
Document | Title | Date |
20080208490 | FAILURE DETERMINATION DEVICE FOR CELL VOLTAGE MONITOR - A failure determination device for a cell voltage monitor which detects cell voltages of a plurality of single cells comprising a fuel cell stack comprises: a memory for storing cell voltages detected by the cell voltage monitor; a minimum value determination unit for determining whether or not a present cell voltage which the cell voltage monitor detects is equal to or lower than a minimum value cell voltage which is in a detectable range of the cell voltage monitor; a failure determination unit for determining that the cell voltage monitor has a failure when the minimum value determination unit determines that the present cell voltage is equal to or lower than the minimum value cell voltage, and a cell voltage detected by the cell voltage monitor in the past and stored in the memory is greater than a determination cell voltage. | 08-28-2008 |
20080208491 | Integrated Circuit and Method for Classification of Electrical Devices and Short Circuit Protection - An integrated circuit device and method for classifying electrical devices is disclosed. A reference current response of a plurality of electrical devices is determined and stored in a memory. Real-time current response of a specific electrical device is measured and stored in the memory. A processor compared the measured real-time current response of the specific electrical device to the reference current responses of the plurality of electrical devices. A classification of the electrical device is then made based on the comparison. | 08-28-2008 |
20080208492 | System and Method for Early Qualification of Semiconductor Devices - According to one embodiment of the invention, a method for early qualification of semiconductor device includes performing initial testing on a semiconductor device, receiving fail data on the semiconductor device, determining a solution model for the semiconductor device based on the fail data, storing the solution model, performing subsequent testing on the semiconductor device, and comparing a result of the subsequent testing to the solution model. | 08-28-2008 |
20080234952 | Test circuit, pattern generating apparatus, and pattern generating method - A test circuit connected between a test target circuit and a plurality of external terminals includes N first holding circuits to hold respectively N unit patterns produced by dividing an internal signal pattern to be input to or output from the test target circuit by N, where N is a natural number of two or greater, and a control circuit to make the internal signal pattern held in the N first holding circuits be changed selectively on a unit pattern basis based on a value of an identification signal assigned to each of the unit patterns beforehand, or to make the internal signal pattern held in the N first holding circuits be output selectively on a unit pattern basis based on the values of the identification signal. | 09-25-2008 |
20080243402 | FAULT DETECTOR FOR A TIP AND RING CIRCUIT, A METHOD OF PROTECTING SUCH A CIRCUIT AND A POWER SUPPLY INCLUDING THE FAULT DETECTOR - A fault detector for use with a telephone wire-pair having a return conductor and an output conductor, a method of protecting a telecommunications network including the telephone wire-pair and a power supply for the telecommunications network. In one embodiment, the fault detector includes (1) a passive sensor coupled between Earth and the wire-pair to detect a ground fault thereon, (2) an amplifier having inputs coupled across the passive sensor and configured to characterize the ground fault in terms of a value and (3) a controller configured to receive the value via an output of the amplifier and compare the value to a threshold to determine if the ground fault exceeds a safety limit. | 10-02-2008 |
20080255780 | Ic Testing Methods and Apparatus - A shift register circuit is provided for storing instruction data for the testing of an integrated circuit core. The shift register circuit comprises a plurality of stages, each stage comprising a serial input (si) and a serial output (so) and a parallel output (wir_output) comprising one terminal of a parallel output of the shift register circuit. A first shift register storage element ( | 10-16-2008 |
20080262759 | System and method for testing information handling system components - A system and method is disclosed for testing components used in the manufacture of information handling systems. In embodiments of the invention, a device-under-test (DUT) comprises a DUT identifier code. The DUT is operably coupled to a test bed. An information handling system is operable to use the identifier code to select and execute a predetermined test program to generate a plurality of test commands. A test bed interface is operable to receive the test commands and to generate a plurality of test control signals therefrom to perform a predetermined set of tests of said DUT. | 10-23-2008 |
20080262760 | SEMICONDUCTOR INSPECTING APPARATUS - A semiconductor inspecting apparatus includes: a buffer memory whose width is matched to the greater of parallel bus width and the width of the number of serial lanes; a preceding stage bus switching unit that fills the buffer memory with input data without making a free space; equivalent transmission capacity conversion including a following stage bus switching unit that fills read data to the width of an arbitrary number of serial lanes without making a free space; a preceding stage bus switching unit that fills a buffer memory with input data without making a free space; and equivalent transmission capacity inverse conversion including a following stage bus switching unit that fills a parallel bus of arbitrary width with data read from a buffer memory without making a free space. | 10-23-2008 |
20080270049 | SYSTEM AND METHOD FOR MONITORING RELIABILITY OF A DIGITAL SYSTEM - System and method are provided for continually monitoring reliability, or aging, of a digital system and for issuing a warning signal if digital system operation degrades past a specified threshold. The technique includes implementing a ring oscillator sensor in association with the digital system, wherein logic and/or device percent composition of the ring oscillator sensor mirrors percent composition thereof within the digital system. Counter logic is coupled to the ring oscillator sensor for converting outputted count signals to an oscillation frequency, and control logic is coupled to the counter logic for periodically evaluating oscillation frequency of the ring oscillator sensor and generating a warning signal indicative of reliability degradation if at least one of: (i) a measured or estimated oscillation frequency is below a warning threshold frequency; or (ii) a measured or estimated rate of change in a difference between measured oscillation frequencies exceeds an acceptable rate of change threshold. | 10-30-2008 |
20080270050 | TEST SYSTEM AND FAILURE PARSING METHOD THEREOF - A test system and a failure parsing method. The test system may comprise a cell array including defective cells formed according to various failure causes, a test apparatus configured to measure electric characteristics from the defective cells and make the measured electric characteristics numerical, and a database apparatus configured to store the numerical electric characteristics. The failure parsing method may include forming defective cells to have at least one failure cause, measuring electric characteristics of each of the defective cells, storing the measured electric characteristics of each of the defective cells in a database, and judging failure causes of a failed chip of a semiconductor wafer based on the database. | 10-30-2008 |
20080281536 | SEMICONDUCTOR CP (CIRCUIT PROBE) TEST MANAGEMENT SYSTEM AND METHOD - A system and method for semiconductor CP (circuit probe) test management. A control request message is received from a client computer, directing alignment of a probe unit or a wafer in a prober, attachment of a probe pin of the probe unit on a specific area of the wafer, and subsequent execution of CP testing. At least one control command corresponding to the control request message is issued to direct the prober for alignment of the probe unit or the wafer, attachment of the probe pin of the probe unit on the specific area of the wafer, and subsequent execution of CP testing. | 11-13-2008 |
20080306697 | SEMICONDUCTOR DEVICE AND NOISE MEASURING METHOD - Provided is a semiconductor device for outputting only the necessary information from non-periodic noise information to the outside. An analysis object information extracting section specifies analysis object information used to analyze noise associated with a malfunction from the non-periodic noise information having a large amount of information and extracts only the specified analysis object information from the noise information. A communication section outputs the extracted analysis object information to the outside. Thus, the amount of the information can be reduced and the noise information can be outputted by an inexpensive communication section such as a serial communication device. | 12-11-2008 |
20090030622 | Non-linear Junction Based Electronics Detection - Line anomalies on a line under test are detected by generating a test signal at a first power level and coupling the test signal to the line under test. A response level is received from the line under test at a second and third harmonic frequency of the first test signal. A second test signal is generated at an increased power level and coupled to the line under test and a response level from the line is received at a second and third harmonic frequency of the second test signal. The process is repeated by raising the power level of the test signal until a current level supplied to the line by a test signal exceeds an acceptable threshold level. The response levels are compared to stored data to locate any line anomalies present. The stored data represents harmonic response data obtained from the same line at a previous time. A graphical or mathematical representation of the response data is produced such that the response data can be easily compared to locate any anomalies. | 01-29-2009 |
20090063061 | MONITORING DEGRADATION OF CIRCIUT SPEED - A circuit, method, and computer readable medium that enables on-chip monitoring of transistor degradation. The circuit includes an on-chip reference ring oscillator electrically coupled to an on-chip reference counter. An on-chip stressed ring oscillator is electrically coupled to an on-chip test counter. A test enable input is electrically coupled with the reference counter, the test counter, and the reference ring oscillator. When the test enable input is asserted the reference ring oscillator places a bit sequence proportional to the reference ring oscillator frequency on the reference counter simultaneously while the stressed ring oscillator places bit sequence proportional to the stressed ring oscillator frequency on the test counter. A difference in bit sequence between the reference counter and the test counter is compared to determine a relative difference there between. | 03-05-2009 |
20090063062 | Fault test apparatus and method for testing semiconductor device under test using fault excitation function - A fault test apparatus for testing a fault on each signal line in a circuit under test including signal lines includes a controller, which calculates a value of a fault excitation function for a fault signal line, using the fault excitation function representing a fitness result of a predetermined fault excitation condition between the fault signal line having a fault among the signal lines under test in the circuit under test and at least one of adjacent signal lines adjacent to the fault signal line and falling within a predetermined range from the fault signal line, based on layout information between the fault signal line and at least one adjacent signal line adjacent to the fault signal line, manufacturing parameter information, and timing information, and then, determines whether or not a dynamic fault is excited on the fault signal line based on the value of the fault excitation function. | 03-05-2009 |
20090063063 | Preventive Maintenance Tapping and Duty Cycle Monitor for Voltage Regulator - The life of load tap changer contacts is monitored by detecting an arcing event; identifying arcing surfaces involved in the arcing event; calculating a per-unit loss of life for the identified arcing surfaces as a result of the arcing event; updating estimates of cumulative erosion for the arcing surfaces; comparing the updated estimates of cumulative erosion to a first threshold value; and signaling for action when at least one of the updated estimates of cumulative erosion exceeds the first threshold value. | 03-05-2009 |
20090063064 | RESIDUAL CURRENT DEVICE HAVING VOLTAGE DEPENDENT AND VOLTAGE INDEPENDENT MODES OF OPERATION - This invention relates to a residual current device which is able to safely and reliably operate when a line voltage is present (voltage dependent mode) and when the line voltage is not present or falls below a predetermined threshold level (voltage independent mode). The present invention is implemented as a residual current device having a trip mechanism for isolating an electric supply to an electrical installation upon detection of a predetermined current imbalance between the line and neutral conductors of said electric supply. The present invention comprises a current transformer having a secondary winding responsive to any current imbalance on said electrical installation, and a circuit protection winding being connectable to a processing means. The impedance of said processing means varies according to the level of the line voltage such that the device, under normal operation, behaves as a voltage dependent residual current device, but in the rare occasion where operation may be required when no line voltage is present, offers voltage independent protection. | 03-05-2009 |
20090076747 | Test board and test system - A test board includes a socket, a mounting test circuit, and a relay. An analog core embedded application processor is installed into the socket. The mounting test circuit has a same configuration as an environment where the analog core embedded application processor is actually used. The relay disconnects the mounting test circuit from the socket in response to a first control signal when a vector test is performed on the analog core embedded application processor, and that connects the mounting test circuit to the socket in response to a second control signal when a mounting set test is performed on the analog core embedded application processor. | 03-19-2009 |
20090082978 | METHOD OF DETECTING DEGRADATION OF SEMICONDUCTOR DEVICES AND METHOD OF DETECTING DEGRADATION OF INTEGRATED CIRCUITS - A method of detecting a degradation of a semiconductor device including calculating a first number of first traps accumulated in a gate insulation layer of the semiconductor device over an operation time of the semiconductor device; calculating the second number of second traps accumulated at an interface between the gate insulation layer and a substrate over the operation time; and calculating the degradation of the semiconductor device relative to the operation time using the first number of the first traps and the second number of the second traps. | 03-26-2009 |
20090088988 | ARCING EVENT DETECTION - Methods for detecting electrical arcing on an electrical power system are provided, as well as systems and computer program products for carrying out the method. The method includes the steps of: a) obtaining data indicative of the temporal behavior of a signal which is indicative of a first periodic property of the electrical power system; and b) determining whether an arcing event is present on the electrical power system based on the shape observed in the first data. | 04-02-2009 |
20090088989 | SYMMETRICAL COMPONENT AMPLITUDE AND PHASE COMPARATORS FOR LINE PROTECTION USING TIME STAMPED DATA - A set of current measurements may be transmitted from a remote Intelligent Electronic Device (IED) to a local IED. The current measurements may comprise a timestamp and/or be associated with timestamp information to allow the local IED to time align the local current measurement with the remote current measurement. The local IED may detect a fault within the power system segment defined by the local and remote IEDs by comparing an operating current to a scaled restraint current. A fault may also be detected by comparing the operating current to a scaled nominal current. The operating and restraint currents may be derived from the local and remote current measurements. The restraint current scale may be derived from the characteristics of the local and/or remote IED. The current measurements may correspond to a negative-sequence component and/or a zero-sequence component of a three-phase current measurement set. | 04-02-2009 |
20090088990 | SYNCHRONIZED PHASOR PROCESSOR FOR A POWER SYSTEM - A device is provided for monitoring and controlling various power system device and elements. The device generally includes a communications channel for receiving phasor data associated with a location on the power system. The device further includes a logic engine which performs scalar, vector and/or other complex calculation based on the phasor data to provide control data or an output signal for effecting the various other power system devices or elements to provide local or wide area protection, control, and monitoring to maintain power system stability. | 04-02-2009 |
20090105970 | SEMICONDUCTOR TESTER - In a calculator | 04-23-2009 |
20090112493 | Method and device for predicting electrolytic capacitor defects, converter and uninterruptible power supply equipped with such a device - A method for predicting defects of at least one capacitor comprising:
| 04-30-2009 |
20090119035 | METHOD AND APPARATUS FOR ANALYZING PARTIAL DISCHARGES IN ELECTRICAL DEVICES - A method of analyzing partial discharge data collected from an electrical device includes collecting partial discharge data from a first electrical device belonging to a group of electrical devices. The group of electrical devices is at least partially defined by at least one electrical device classification. The method also includes generating a comparison of at least a portion of the partial discharge data collected from the first electrical device with at least a portion of the partial discharge data collected from at least one second electrical device. The at least one second electrical device is selected from the group of electrical devices that includes the first electrical device. The method further includes transmitting the results. | 05-07-2009 |
20090138217 | TEST METHOD AND DEVICE FOR TESTING A PLURALITY OF RFID INTERPOSERS - Method for testing a large number of RFID interposers in order to check their functionality by means of a test device ( | 05-28-2009 |
20090143999 | REAL TIME SYSTEM FOR MONITORING THE COMMONALITY, SENSITIVITY, AND REPEATABILITY OF TEST PROBES - A system and a method for effectively determining the measurement sensitivity, repeatability, and probe commonality to assist a test engineer determine if the tester meets the specified resolution at every test. A statistical measurement of inherent tester specifications are provided with the added accumulation of the probe contact resistance during the probing process. It further provides a feedback to the test probe card noise level while testing is in progress. Moreover, the system and the method determine the test probing integrity in-situ when testing integrated circuit chips or wafers, dynamically detecting probing errors, and modifying data associated with defective test probes. | 06-04-2009 |
20090150098 | SYSTEM AND METHOD FOR PHOTOEMISSION-BASED DEFECT DETECTION - An IREM image of an IC is obtained. The emission intensity at each emission site is measured/calculated and is compared to reference intensity. The calculated intensity may be plotted against reference intensities. In general, the majority of the plotted intensities would lie in a given range within a straight line. However, for devices that exhibit an abnormal emission, the plot would result in an easily observable deviation from the line. The calculated intensity is used to make a determination of logical “1” or “0” for each device, which is automatically stored together with the corresponding test vector. The calculated logical states are then tabulated and compared against tabulation of reference logical states. | 06-11-2009 |
20090187358 | System, Device and Method for Determining Power Line Equipment Degradation - A system, method and device for detecting power grid equipment degradation is provided. In one embodiment, a method of using a device comprises measuring a first voltage of a first energized conductor of a power line connected to the output of a distribution transformer supplying power to one or more customer premises, processing data of the measured voltage to detect a trigger condition wherein the trigger condition comprises, at least in part, a change in the first voltage that extends for at least a first duration, and transmitting a notification of a detection of a trigger condition to a remote computer. The method may further include measuring a second voltage of a second energized conductor and wherein the trigger condition comprises detecting concurrently for at least the first duration a difference between the first voltage and the second voltage that exceeds a first threshold, and a sum of the first voltage and the second voltage that is within a predetermined voltage range. In addition, processing data of the measured voltage to detect a trigger condition may include comprise processing the data to determine whether the first voltage changes beyond a first threshold within a first predetermined maximum time period and remains beyond the first threshold for at least a second duration. | 07-23-2009 |
20090192735 | FAILURE PREDICTION APPARATUS AND FAILURE PREDICTION METHOD - An optical pickup which has a failure prediction apparatus for predicting a failure of a laser diode has an input inputting a value of a current that flows through the laser diode and is measured at predetermined time intervals, a storage storing the current values inputted by said input, a detector detecting a current value that is a current value at any one of the measurement times of day stored in said storage and that has a change greater than or equal to a predetermined value relative to the current value at the preceding measurement time of day, and a generator generating a prediction curve that indicates a relationship between said elapsed time and the current value applicable at and after the measurement time of day of the current value detected by said detector. | 07-30-2009 |
20090198459 | Multifunctional Residential Circuit Breaker - An electrical fault detection device for use in a branch of a power circuit that utilizes signals from an AC line current sensor coupled to an electrical distribution line having a primary and neutral lines, a line high-frequency sensor coupled to the electrical distribution line, a differential current sensor coupled to the primary and neutral lines, and a ground fault current sensor coupled to the primary and neutral lines. A signal conditioner receives the signals outputted by AC current line current sensor, the line high frequency sensor, the differential current sensor and the ground fault current sensor and generates a signal indicative of the load current associated with a branch of the power circuit. Output of the signal conditioner is sampled and processed by a processing resource. The processing resource has stored therein data representing a plurality of time-versus-current curves that define a plurality of regions in which tripping may or may not occur. One region has time data and current data that define a time-duration for a particular current magnitude for which no tripping will occur. Another region has time data and current data that define a time-duration of a particular current magnitude for which tripping will occur. Processing resource processes sampled signal to determine the region to which the processed time data and current data correspond, and generates a signal to initiate tripping if the sampled signal yields a time duration for a particular current magnitude that corresponds to a region for which tripping must occur. | 08-06-2009 |
20090204347 | METHOD FOR DETECTING HIGH IMPEDANCE FAULTS BY ANALYZING A LOCAL DEVIATION FROM A REGULARIZATION - A method for detecting high impedance faults, including: receiving an input waveform from a circuit; computing a root mean square of the input waveform; fitting a regression line to the root mean squares; computing a deviation between the regression line and the root mean squares; determining whether the deviations are above a threshold; and outputting a value indicating that a fault has occurred in the circuit when the deviation is above the threshold and outputting a value indicating that a fault did not occur in the circuit when the deviation is below the threshold. | 08-13-2009 |
20090222223 | SYSTEM AND METHOD FOR STREETLIGHT MONITORING DIAGNOSTICS - One or more example diagnostics may be implemented as part of an intelligent luminaire manager or other radio frequency (RF) device that is in communication with an equipment or fixture such as a luminaire. Example diagnostics can determine a status such as a fixture malfunction, a cycling condition, a miswiring configuration, or another condition. The determined status can be wirelessly transmitted from the intelligent luminaire manager or other radio frequency device to a network server via a network. The network may be a network of intelligent luminaire managers and/or RF devices. | 09-03-2009 |
20090248327 | INSTRUMENT AND METHOD FOR MEASURING PARTIAL ELECTRICAL DISCHARGES IN AN ELECTRICAL SYSTEM - An instrument ( | 10-01-2009 |
20090259416 | DEVICE FOR INSPECTING AN ELECTRIAL LINE'S PROTECTION ELEMENT AND FOR VERIFYING SAID ELECTRICAL LINE - Device for inspecting an electrical line's protection element and for verifying said electrical line disposed, in use, part in series and part in parallel with the corresponding protection element and comprising: processing means that control and functionally interconnect the other components of the device and that receive tension directly from a point of the line upstream of said protection element; means for measuring tension that include first and second measuring assemblies interposed between said processing means and the line; switching means situated on a bridge that interlinks the branches of the circuit on which said first and second measuring assemblies are located; and alerting means that inform of the status of said protection element and of the line. | 10-15-2009 |
20090276170 | Automated voltage analysis in an electrical system using contextual data - A voltage analysis algorithm for automatically determining anomalous voltage conditions in an electrical system monitored by a plurality of intelligent electronic devices (IEDs) and automatically making recommendations for ameliorating or eliminating the anomalous voltage conditions. The electrical system hierarchy is determined automatically or manually, and the algorithm receives voltage data from all capable IEDs. The voltage data is temporally aligned or pseudo-aligned to place the voltage data in both spatial and temporal context. The algorithm determines anomalous voltage conditions systemically by comparing measured voltage values against nominal or expected ones across the system. Based on the spatial and temporal context of the IEDs, the algorithm automatically identifies a source of the voltage deviation in the hierarchy, and recommends a modification associated with the source for mitigating the anomalous voltage condition. The algorithm checks its recommendation to determine any adverse effects on the electrical system and adjusts the recommendation accordingly. | 11-05-2009 |
20090281740 | CABLE FAULT DETECTION - A cable fault detection component ( | 11-12-2009 |
20090287430 | System and Method for Detecting Leak Current - The periphery of a load circuit ( | 11-19-2009 |
20090287431 | TEST APPARATUS, TEST METHOD AND COMPUTER READABLE MEDIUM - Provided is a test apparatus for testing a device under test, the test apparatus including: a pattern generating section that inputs a test pattern to the device under test; a judging section that judges whether the device under test is defective or not, based on an output signal outputted from the device under test; a power supply apparatus that supplies a source power to the device under test; and a setting section that detects a fluctuation amount of the source voltage resulting when the test pattern is inputted to the device under test, and sets, based on the detected fluctuation amount, a current range within which a compensation current that is in accordance with a fluctuation of a consumption current consumed by the device under test is generated at a predetermined number of levels so as to compensate a fluctuation of a source voltage to be applied to the device under test attributable to the fluctuation of the consumption current. | 11-19-2009 |
20090319207 | ELECTRICAL INSTALLATION ARRANGEMENT - An electrical installation arrangement includes an electrical power distribution network and/or at least one first electrical device. In order to reduce complexity of electrical installation arrangement and increase safety of people and facilities, a detector is provided for determining a fault source using blind source separation, e.g. for locating at least one first electrical fault source, in particular at least one first fault current source and/or a first overload area. The detector is hereby disposed on and/or in the electrical power distribution network and/or the at least one first electrical device. | 12-24-2009 |
20100004882 | FAULT DETECTION AND CLASSIFICATION METHOD FOR WAFER ACCEPTANCE TEST PARAMETERS - A fault detection and classification (FDC) method for wafer acceptance test (WAT) parameters includes the following steps. A plurality of fault detection and classification parameters is collected. A plurality of wafer acceptance test parameters that are corresponded by the fault detection and classification parameters is collected. The fault detection and classification parameters are grouped. A contingency table of the wafer acceptance test parameters corresponding to the fault detection and classification parameters is built. A probability model of the contingency table is built. Finally, a safety range of the probability model is determined. | 01-07-2010 |
20100010758 | WIRELESS WIREHARNESS TESTING SYSTEM - A system and method for wireharness testing includes at least one probe attachable to a connector of a wireharness, the at least one probe in wireless communication with a controller to identify a potential lack of continuity in the wireharness therebetween. | 01-14-2010 |
20100010759 | Testing of an Electronics Module - A method of testing an electronics module ( | 01-14-2010 |
20100042344 | SYSTEM AND METHOD FOR DETECTING AN ELECTRICAL SHORT ACROSS A STATIC SWITCH OF AN UNINTERRUPTIBLE POWER SUPPLY - A monitoring system for detecting a short circuit condition in a switching subsystem of a bypass input of a power supply. The system may comprise a voltage monitoring subsystem for monitoring a voltage across at least one component of the switching subsystem and generating a first output signal in accordance therewith. A processor, responsive to the first output signal from the voltage monitoring subsystem, may be used to compare the first output signal with a predetermined threshold signal and to generate a second output signal based on the comparison. The processor may also be used to consider a state of a circuit breaker in communication with the switching subsystem and to use the state of the circuit breaker and the second output signal to determine whether at least one of a short circuit condition and an open circuit condition exists with respect to the switching subsystem. | 02-18-2010 |
20100049453 | TEST APPARATUS AND MANUFACTURING METHOD - Provided is a test apparatus that tests a device under test, comprising a test signal generating section that generates a test signal to be applied to the device under test; a first driver that is electrically connected to a terminal of the device under test and that supplies the test signal to the terminal of the device under test; a correction signal generating section that generates a correction signal for correcting attenuation of the test signal occurring until the test signal reaches the terminal of the device under test; and a second driver that is electrically connected to the terminal of the device under test and that supplies the correction signal to the terminal of the device under test. | 02-25-2010 |
20100049454 | LIGHT EMITTING DIODE FAULT MONITORING - Methods, systems, and devices are described for providing fault monitoring for light emitting diode (LED) circuits. Embodiments receive an indication from a fault control module that a fault has occurred in a portion of an LED module (e.g., a series string of LEDs). The fault may represent an open fault or a closed fault condition. In some embodiments, a monitoring module receives the fault indication and generates a further representation that the fault has occurred (e.g., for use by external components or systems). In other embodiments, the monitoring module in configured to further indicate which in the LED module has failed, and/or in what fault condition (e.g., open or closed). | 02-25-2010 |
20100057385 | ACCUMULATOR FAILURE DETECTING DEVICE, ACCUMULATOR FAILURE DETECTING METHOD, ACCUMULATOR FAILURE DETECTING PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM CONTAINING THE ACCUMULATOR FAILURE DETECTING PROGRAM - A device detects a failure in an accumulator formed by connecting a plurality of accumulation portions including at least one accumulation element. Upon determining that the accumulator is in a state close to a failure state from a time interval between equalization processes on the plurality of accumulation portions, the device calculates a failure determination value from a charge and discharge capacity of the accumulator measured after the determination and makes a determination as to whether the accumulator is in a failure state using the failure determination value. | 03-04-2010 |
20100057386 | REDUNDANT AND FAULT-TOLERANT POWER DISTRIBUTION SYSTEM HAVING AN INTEGRATED COMMUNICATION NETWORK - A power distribution and communication system includes nodes connected by power lines and communication links. The system receives power from one or more power sources. Each node contains at least one power port, data port and load port. Associated with each power port and load port is a port monitor for measuring current flowing into or out of the port and the voltage difference between the port outlet and ground, which measurements are passed to a processing element. The processing element and monitor analyze measured values to detect fault conditions. Upon fault condition detection, the port is disabled by opening a switch, disconnecting the port from the system voltage. The processing element receives power directly from the power line, thus receiving power from a live power line even if the associated power port is disabled allowing the processing element to enable a disabled node following a failure. | 03-04-2010 |
20100070211 | ROLLING AVERAGE TEST - A system and method for performing dynamic in-line testing of semiconductor devices sequentially tests a plurality of semiconductor devices. Test data associated with a predetermined number of semiconductor devices of the sequentially tested semiconductor devices is stored in a data structure. After test data corresponding to a predetermined number of semiconductor devices is stored in the data structure, the following steps are iteratively performed. Statistics concerning the selected devices are calculated using the associated test data. A device that fails to meet a precision setting based on the statistics is marked as an outlier device. Test data stored in the data structure corresponding to an earliest tested semiconductor device in sequence is evicted from the data structure. Test data associated with the next passing tested semiconductor device in sequence is stored in the data structure. | 03-18-2010 |
20100070212 | Method and apparatus for determining state of inverter capacitor in an electric drive - A method of inverter capacitance diagnosis for detecting an imminent failure of one or more inverter capacitors in an electric power supply system for a machine detects that the generator has ceased generating electrical power takes a plurality of current samples on the DC link between predetermined voltage points. The plurality of current samples are integrated as a function of time to create a discharge integral, which is compared to a previously obtained discharge integral if available. The process sets a diagnostic flag to indicate an imminent failure of the one or more inverter capacitors if the discharge integral varies from the previously obtained discharge integral by more than a predetermined value. | 03-18-2010 |
20100088047 | POWER CONVERTER DISABLE VERIFICATION SYSTEM AND METHOD - A power electronics device with an improved IGBT protection mechanism is provided. More specifically, systems and methods are provided for shortening the duration of a shutdown test pulse, such that the power output to the load is substantially unaffected. | 04-08-2010 |
20100088048 | Method And Device To Predict A State Of A Power System In The Time Domain - A method to predict a state of a power system and a device to perform the method are presented, where the method includes the step of performing a Fast Fourier Transform on samples of a periodic waveform signal in order to determine a frequency spectrum of the signal, where the signal was derived from at least one measurable electric quantity of the power system and is representative for the state of the power system. Frequencies and related complex amplitudes at selected peaks in the frequency spectrum are determined and stored together with a time stamp. Afterwards, a predicted value of the periodic waveform signal in the time domain is determined at a prediction time by calculating a sum of sinusoidal signals at the prediction time, where each of the sinusoidal signals is characterized by one of the determined frequencies and its related complex amplitude as well as the time stamp. | 04-08-2010 |
20100114508 | DEVICE AND METHOD FOR TESTING A CIRCUIT - A device and a method. The device includes: (i) a processor, connected to the receiver, (ii) an interface adapted to receive a test vector and to output a test response, the test vector includes a first group of signals that include idle signals and at least one information frame and a second group of signals that include timing signals and data signals; and (iii) a receiver, connected to the interface. The receiver is adapted to receive the first group of signals and filter out the idle signals and at least one instruction frame delimiters to provide at least one instruction. The device is adapted to send the at least one instruction to at least one instruction buffer. The processor is adapted to execute at least one instruction stored in the at least one instruction buffer and to respond to the second group of signals such as to provide test responses. | 05-06-2010 |
20100114509 | METHOD FOR PROCESSING DATA PERTAINING TO AN ACTIVITY OF PARTIAL ELECTRICAL DISCHARGES - A method for measuring and processing data pertaining to an activity of partial electrical discharges taking place in a three-phase electric machine ( | 05-06-2010 |
20100131214 | Method and Apparatus for Measuring Transmission and Reception in Electronic Devices - In a representative embodiment, an apparatus comprises a host subsystem comprising a user interface and configured to receive a plurality of parameters; and a processor comprising a hardware interface and configured calculate hardware states based on at least a subset of the plurality of parameters. The apparatus also comprises a first subsystem comprising a hardware control processor adapted to configure first hardware based on the calculated hardware states; and a second subsystem comprising second hardware and a second hardware control processor adapted to configure the second hardware based on the calculated hardware states. The apparatus also comprises a data converter configured to provide data directly to the host subsystem. | 05-27-2010 |
20100131215 | INSULATION MONITORING SYSTEM & INSULATION DETECTING METHOD FOR ELECTRIC POWER SUPPLY SYSTEM - An insulation detecting apparatus of the present invention comprises a voltage detecting means for detecting a voltage component of each of three phases, a zero-phase current transformer for detecting zero-phase leakage current flowing between the power line and ground, a leakage current detecting means for converting a leakage current component detected by the zero-phase current transformer into a voltage component and extracting a frequency component lower than a certain frequency or a frequency component of a commercial frequency band, a phase comparing means for detecting a phase difference between an output value of each of the three phases of the voltage detecting means and an output value of the leakage current detecting means, an analog-to-digital conversion unit for converting the output value of the leakage current detecting means into a digital component, an operation controller for reading and outputting a variety of data, and an input-output unit. According to the present invention, the insulation state of a power line can be detected by calculating active component leakage current between a power line including a load and the ground that is directly related to an insulation state or reactive component leakage current that is not directly related to the insulation state, but generated by ever-existing electrostatic capacitance, and the insulation detecting apparatus can be remotely controlled. | 05-27-2010 |
20100145641 | SYSTEM FOR MONITORING AND ASSESSING ELECTRICAL CIRCUITS AND METHOD OF OPERATION - A system for collecting data and monitoring the operation of electrical circuits, such as branch circuits at a substation is provided. The system collects data from a plurality of sensors coupled to a plurality of electrical equipment associated with a circuit. The data from the sensors is collected and used to determine the activation of the electrical equipment, such as a protective relay for example. The data is further transformed to allow assessment of the circuit's performance against desired parameters. | 06-10-2010 |
20100153034 | MEASUREMENT EQUIPMENT, SERIAL TRANSMISSION SYSTEM, PROGRAM, AND RECORDING MEDIUM - Provided is a semiconductor test apparatus that tests a device under test, comprising a test unit that tests a device under test; and a serial transmitting section that transmits transmission data back and forth between the test unit and a control section controlling the test unit. The serial transmitting section includes a data sending section that sends a plurality of pieces of the transmission data in a predetermined order; a resending control section that resends the transmission data; and an expected acknowledgement ID storage section that stores an expected acknowledgement ID indicating identification data that is expected to be attached to an acknowledgement signal received on a transmission side. The resending control section judges whether resending is necessary based on (i) whether resend count information indicates that a piece of transmission data is resent data and (ii) the expected acknowledgment ID in the expected acknowledgement ID storage section. | 06-17-2010 |
20100169029 | DIAGNOSIS AND POSITION IDENTIFICATION FOR REMOTE CAPACITOR BANKS - A method of evaluating one or more capacitor banks in an electrical power system includes: (a) acquiring data representing a signal of interest of the power system, where the data describes a plurality of power system events; and (b) based on one or more patterns contained in the data, identifying at least one of the power system events as being associated with capacitor operation. | 07-01-2010 |
20100169030 | MACHINE CONDITION ASSESSMENT THROUGH POWER DISTRIBUTION NETWORKS - A device, which is preferably embedded in a power distribution enclosure, enables analysis of conditions of electromechanical machines and, alternatively, also their driven or driver devices. The analysis uses operating voltages and currents supplied to or from the electromechanical machines. Since these voltages and currents are available at the enclosure, wiring or any other communication means to any sensors on the electromechanical machines or on the driver or driven devices are not necessary. The embedded device may optionally transmit its results to a computing or monitoring device remote from the enclosure, preferably wirelessly. The embedded device may receive all its power from an existing, conventional potential transformer in the enclosure, so that the embedded device may be retrofitted to the enclosure without the addition of any wiring external to the enclosure. | 07-01-2010 |
20100185404 | Method of predicting failures in components - The present invention predicts circuit failure in an electrical or electromechanical system by interpreting test measurement information from component(s) that have begun to change operating behavior as beginning to fail. Electrical components that are changing in electrical properties are diagnosed as beginning to fail leading to an operational circuit condition that is out of specification. Circuit failure prediction using this knowledge is called Prognostics. With this knowledge of an impending failure, circuit turn off, repair or replacement of the equipment that the circuit is in can be done before the circuit/equipment fails averting loss of service. This invention is superior to commonly used circuit diagnostics which are usually used on already failed electrical circuits to determine component failure until after the circuit has failed causing a loss of service. Traditional circuit diagnostics are used to determine which component has failed after the circuit fails to operate according to specifications making Prognostics superior over diagnostics. | 07-22-2010 |
20100191486 | METHOD AND AN APPARATUS FOR MONITORING AN ACTIVITY OF PARTIAL ELECTRICAL DISCHARGES IN AN ELECTRICAL APPARATUS POWERED WITH DIRECT VOLTAGE - A method for monitoring an activity of partial electrical discharges in an electric apparatus powered with direct voltage comprises the following steps, repeated in succession at predetermined time intervals: measuring ( | 07-29-2010 |
20100204933 | ZONE SELECTIVE INTERLOCKING TEST METHOD AND APPARATUS, AND CIRCUIT INTERRUPTER APPARATUS AND POWER DISTRIBUTION SYSTEM INCLUDING THE SAME - A circuit interrupter apparatus includes circuit interrupter and a device. The circuit interrupter includes separable contacts, an operating mechanism structured to open and close the separable contacts, and a trip mechanism cooperating with the operating mechanism to trip open the separable contacts. The trip mechanism includes a zone selective interlocking input and a zone selective interlocking output. The device includes a first input electrically interconnected with the zone selective interlocking input, a second input electrically interconnected with the zone selective interlocking output, and an indicator circuit structured to indicate that the zone selective interlocking input occurred at the first input or that the zone selective interlocking output occurred at the second input. | 08-12-2010 |
20100217545 | Method and Apparatus for Monitoring Solenoid Health - A method for monitoring the state of health (SOH) of a solenoid powered by a battery includes measuring a voltage and a current supplied to the solenoid by the battery, using a processor to determine each of an equivalent resistance and inductance of the solenoid using the voltage and the current, comparing the equivalent resistance and the equivalent inductance to a corresponding calibrated threshold, and recording deviations from the corresponding calibrated thresholds as a pair of SOH values. A trend of the SOH values is continuously monitored, and an appropriate control action is taken when either SOH value drops below a calibrated lower limit. A solenoid monitoring system includes a solenoid, voltage and current sensors, and a controller having an algorithm for continuously monitoring a state of health (SOH) of the solenoid as set forth above. | 08-26-2010 |
20100217546 | Methods and Apparatuses for Detecting Faults in Electrical Power Systems - Methods and apparatuses are disclosed for detecting a fault in an electrical power system having three phases, a plurality of feeders, a ground, a neutral, and a neutral resistor electrically coupling the neutral to the ground. In one embodiment, the method may comprise determining a neutral current in the neutral resistor; measuring a net feeder current for each of the plurality of feeders; and setting a state of a feeder fault output signal based on the neutral current and the net feeder current for at least one of the plurality of feeders. | 08-26-2010 |
20100217547 | METHODS AND SYSTEMS FOR EVALUATING PERMANENT MAGNET MOTORS - A method for evaluating a permanent magnet motor, which includes a rotor with a plurality of magnets mounted thereon, and a stator with a plurality of windings in proximity to the rotor and coupled to an inverter, includes spinning the motor such that a voltage is induced in the windings of the stator and the inverter; measuring the voltage on the inverter; calculating the voltage constant from the motor from the measured voltage; comparing the voltage constant to accepted voltage constants; and identifying the motor as not acceptable if the voltage constant is outside of a range of the accepted voltage constants. | 08-26-2010 |
20100228507 | TRACE DEVICE AND TRACE METHOD FOR FAILURE ANALYSIS - A trace device for tracing data in an LSI includes a trace data storing unit that stores trace data, a trace target determination unit that determines whether to store trace data of one of a plurality of trace targets in the trace data storing unit based on an operating state of a system including the LSI and based on a failure occurrence report reported from any of the trace targets in response to an occurrence of an error in the trace target residing in the LSI and a trace target selection unit that selects the trace data to be stored in the trace data storing unit out of the trace data from the plurality of trace targets based on the determining by the trace target determination unit, and stores the selected trace data in the trace data storing unit. | 09-09-2010 |
20100241372 | ONLINE PARTIAL DISCHARGE MONITORING SYSTEM OF GENERATOR AND METHOD THEREOF - A system and method for online monitoring partial discharge of a generator are disclosed. The system is connected in parallel with a busbar between the generator and electric network, and comprises: a near-end circuit on a generator side, which includes a near-end capacitive coupling sensor connected to the busbar and a near-end impedor connected in series with the near-end capacitive coupling sensor; a far-end circuit on an electric network side, which includes a far-end capacitive coupling sensor connected to the busbar and a far-end impedor connected in series with the far-end capacitive coupling sensor; and a detection device, which has a near-end input terminal connected to a connection point between the near-end capacitive coupling sensor and the near-end impedor through a near-end cable, a far-end input terminal connected to a connection point between the far-end capacitive coupling sensor and the far-end impedor through a far-end cable, and a processing unit, a length L of the busbar between the two capacitive coupling sensors, a length L | 09-23-2010 |
20100241373 | ESD PROTECTION VERIFICATION APPARATUS AND METHOD - An ESD protection verification apparatus of an aspect of the present invention including an element extraction unit which extracts one or more elements connected to a first pad included in design data for a semiconductor integrated circuit, a first and second element information checking/processing unit which checks connection information for the extracted element and which calculates a operating value based on design information for the extracted element, a first and second error detection unit which compares a reference value with the operating value to determine whether the element has a predetermined ESD withstand voltage. | 09-23-2010 |
20100250158 | ENHANCED CHARACTERIZATION OF ELECTRICAL CONNECTION DEGRADATION - One embodiment provides a system that analyzes an electrical connection in a computer system. During operation, the system monitors a reflection coefficient associated with the electrical connection and applies a sequential-analysis technique to the reflection coefficient to determine a statistical deviation of the reflection coefficient. Next, the system assesses the integrity of the electrical connection based on the statistical deviation of the reflection coefficient. Finally, the system uses the assessed integrity to maintain the electrical connection. | 09-30-2010 |
20100262391 | DEVICE FOR TESTING A PLUG-IN CONNECTION - The invention relates to a device for testing a connection, the connection connecting a first line to a second line. | 10-14-2010 |
20100274505 | DEVICE FOR MEASURING TEMPERATURE AND LEAKAGE CURRENT IN A CHIP - Device for measuring temperature and leakage current in a chip, which provides an output which linearly varies with the temperature. The device comprises a leakage inverter and an electronic module which digitalizes and linearizes the non-linear output of the leakage inverter. When providing a linear response, the need for storage and data interconnection is reduced, besides the numeric representation thereof is facilitated. The device can be used to measure temperature variations inside a chip and also to measure leakage current variations, which also entails measuring static power variations inside a chip. | 10-28-2010 |
20100274506 | METHOD FOR MEASURING INTERFACE TRAPS IN THIN GATE OXIDE MOSFETS - A method for measuring interface traps in a MOSFET, includes measuring charge pumping current of a pulse wave form for various frequencies over a predetermined frequency range, creating plotted points of the measured charge pumping current versus the predetermined frequency range, determining the total number of interface traps participating in the charge pumping current by calculating the slope of a best fit line through the plotted points. | 10-28-2010 |
20100280773 | UNDERWATER MEASUREMENT SYSTEM - There is provided an underwater measurement system ( | 11-04-2010 |
20100299090 | METHOD FOR MONITORING THE SHAFT CURRENT AND/OR THE INSULATION OF THE SHAFT OF ELECTRIC MACHINES AND DEVICE FOR PERFORMING THE METHOD - A method is disclosed for monitoring shaft current (I | 11-25-2010 |
20100312505 | SHORT-CIRCUIT RECOGNITION METHOD FOR AN ELECTRIC NETWORK - A short-circuit recognition method is disclosed, especially an early short-circuit recognition method, for an electric network. In at least one embodiment, in order to improve the switching times of protective devices, the current and the first and second temporal derivation thereof are continuously and consecutively determined at the same time and in the same temporal distance and are processed as respective digital sequences of numbers. Every sequence of numbers is associated with a defined threshold value, the numbers of the three sequences of numbers being compared with the respective threshold value associated therewith. Every number that exceeds the threshold value associated therewith is associated with a weighting variable and the weighting variables that pertain to the same time are added up to a first weighting sum. The first weighting sums are added to a second weighting sum for a defined number of directly subsequent times and the second weighting sum is compared with an additional defined threshold value. When the second weighting sum exceeds the defined threshold value, a short circuit is recognized. | 12-09-2010 |
20100332161 | MONITORING SYSTEM AND METHOD FOR WIRING SYSTEMS - A system for monitoring one or more components of an aircraft wiring system component is provided. The system comprises at least one sensor configured to detect one or more partial discharges produced by a respective one of the components of the aircraft wiring system and to generate at least one monitoring signal, at least one electrical-to-optical converter configured to convert the monitoring signal to an optical signal, at least one optical connector configured to transmit the optical signal, and at least one optical-to-electrical converter configured to convert the optical signal to an electrical signal. The system further comprises a data acquisition system configured to process the electrical signal. Further, a method for monitoring one or more components of an aircraft wiring system component is also presented. | 12-30-2010 |
20100332162 | SYSTEM FOR TESTING MATRIX TYPE CONNECTOR - A system for testing a matrix type connector includes a data collecting circuit, a control circuit, a storage unit, and a display unit. The data collecting circuit collects the connector pins' information, and transmits the collected pins' information to the control circuit. The storage unit is electrically coupled to the control circuit and stores a plurality of normal pins' information. The control circuit compares the collected pins' information with the plurality of stored normal pins' information, and outputs the comparison result to the display unit. The display unit receives the comparison result to indicate whether pins of the matrix type connector are normal. | 12-30-2010 |
20110010117 | APPARATUS FOR NBTI PREDICTION - An apparatus comprises a circuit for measuring a gate leakage current of a plurality of transistors. A circuit is provided to apply heat to gates of the plurality of transistors. A circuit is provided to apply a single stress bias voltage to the plurality of transistors for a stress period t. The stress bias voltage is sufficient to cause a 10% degradation in a drive current of the transistor within the stress period t. A processor is provided for estimating a negative bias temperature instability (NBTI) lifetime τ of the transistor based on a relationship between the gate leakage current and one or more of the group consisting of gate voltage, gate length, gate temperature, and gate width of the plurality of transistors. The relationship is determined from data observed while applying the single stress bias voltage. | 01-13-2011 |
20110015881 | SYSTEM AND METHOD FOR MONITORING THE STATE OF HEALTH OF A POWER ELECTRONIC SYSTEM - A system and method for monitoring the state of health of a power electronic system. Data representing an initial expected temperature of the circuit element and an initial value of an electrical parameter of the circuit element is obtained. An electrical pulse is applied to the circuit element to heat the circuit element. After the electrical pulse decays to a predetermined value, the electrical parameter of the circuit element is sensed and a subsequent value of the electrical parameter is obtained. A subsequent temperature of the circuit element is estimated based on the initial expected temperature of the circuit element, the initial and subsequent values of the electrical parameter, and the predetermined value of the electrical pulse. Based on the subsequent temperature, the signal that indicates whether the circuit element is operating as expected is generated. | 01-20-2011 |
20110035167 | INTEGRATED CIRCUIT SYSTEM FOR CONTROLLING STRUCTURAL HEALTH MONITORING PROCESSES AND APPLICATIONS THEREFOR - A structural health monitoring system using ASICs for signal transmission, reception, and analysis. Incorporating structural health monitoring functionality into one or more ASICs provides a durable yet small, lightweight, low cost, and portable system that can be deployed and operated in field conditions. Such systems provide significant advantages, especially in applications such as armor structures. | 02-10-2011 |
20110077877 | Semiconductor device failure analysis method and apparatus and program - A semiconductor device failure analysis method and apparatus and a computer program for the method and apparatus are provided. The method includes: an observation image acquisition process of acquiring a voltage contrast image by charging an exposed conductive layer of a semiconductor device and irradiating the exposed conductive layer with charged particles; a wiring search process of searching for end points connected to the conductive layer based on design data; and a determination process of comparing voltage contrasts of three levels or more set in advance, one of which is set for a wiring depending on a state of an end point of the wiring, with the voltage contrast image acquired in the observation image acquisition process to determine consistency/inconsistency. Since three or more levels are set, for example, a short-circuit formed by a conductive layer connected to a transistor diffusion layer and another wiring can be identified. | 03-31-2011 |
20110082652 | Method and Apparatus for Fault Detection - A method for fault detection in a signal carrying component. The method comprises applying a first input signal to a first part of the signal carrying component, and applying a second input signal to the signal carrying component. A resultant signal is obtained from the signal carrying component, the resultant signal resulting from interactions of the first and second input signals in the signal carrying component. The resultant signal is processed to determine whether a fault exists in the signal carrying component, the processing being based upon identification of intermodulation products created by the first and second input signals in the signal carrying component. At least one of the first and second input signals is wirelessly injected to the signal carrying component and/or the resultant signal is wirelessly obtained from the signal carrying component. | 04-07-2011 |
20110098951 | ARRANGEMENT AND METHOD FOR GENERATING A FAULT SIGNAL - A method for generating an error signal that characterizes a ground fault on a conductor between two conductor ends. A differential value is formed and the error signal is generated when the differential value meets a prescribed initiating condition. A first comparison value is determined for a selectable location on the conductor using at least one measured current and voltage value taken at a prescribed measurement point in time at one end of the conductor. The comparison value indicates the current or the voltage that should flow or be present at the selectable location in an error-free state. A second comparison value is determined for the selectable location on the conductor using at least one measured current or voltage value, taken at the prescribed measurement point in time at the other end of the conductor. The two comparison values are subjected to difference formation, forming the differential value. | 04-28-2011 |
20110106468 | LOCATION-ADJUSTING INSPECTING APPARATUS AND METHOD FOR A SOLAR BATTERY PANEL INSPECTING SYSTEM - The present invention relates to a location-adjusting inspecting apparatus and method for a solar battery panel inspecting system. The inspecting apparatus includes an image-fetching device and a set of rotatable probe devices. A transport platen of the inspecting system transports a solar battery panel to an inspecting region. The image-fetching device fetches an image of electrode lines on the battery panel, and calculates an offset data by comparing the fetched image with a correct data representing the position and angle of electrode lines. Finally, the probe devices are controlled to generate a corrective rotation based on the calculated offset data. In this way, when pressing the solar battery panel, the probes of the probe devices can be aligned with and contact the electrode lines of the solar battery panel correctly, thereby increasing the accuracy in the inspection of the solar battery panel. | 05-05-2011 |
20110106469 | CIRCUIT AND METHOD FOR DETECTING SHORT AND DISCONNECTION OF RESOLVER FOR HYBRID ELECTRIC VEHICLE - The present invention relates to a circuit and method for detecting a short and a disconnection of a resolver for a Hybrid Electric Vehicle (HEV), which can accurately analyze and detect the fault code of the resolver which detects the speed of a drive motor for an HEV and the angle of a rotator for an HEV. | 05-05-2011 |
20110106470 | SYSTEM AND METHOD FOR MONITORING POWER FILTERS AND DETECTING POWER FILTER FAILURE IN A WIND TURBINE ELECTRICAL GENERATOR - Method, system, and computer readable medium for determining a fault in a power filter of a wind turbine generator. The method may include the steps of calculating a reactive power consumed by the power filter, and comparing the calculated reactive power to a predefined threshold reactive power to determine the fault. | 05-05-2011 |
20110119000 | Synchronized Reconfiguration of Measurement Modules - Configuring at least one radio frequency (RF) instrument according to a plurality of RF measurement configurations for performing a plurality of tests on a device under test (DUT). A list of RF measurement configurations may be stored in a computer memory. The list of RF measurement configurations comprises a plurality of parameters for configuring operation of the at least one instrument. Information regarding the list of RF measurement configurations (e.g., a data stream) may be provided to the at least one RF instrument. The at least one RF instrument may perform the plurality of tests on the DUT, including the at least one RF instrument configuring itself according to the RF measurement configurations based on processing of the information. Configuring enables the at least one RF instrument to perform the plurality of tests on the DUT in a deterministic manner. | 05-19-2011 |
20110125430 | METHOD AND APPARATUS TO MONITOR STATE OF HEALTH OF ELECTRICAL CONNECTIONS BETWEEN BATTERY AND GENERATOR - A system and method for monitoring the state of health of the connection between a generator and a battery includes detecting an interruption in power between the generator and the battery, incrementing a counter each time an interruption is detected, generating a trend of a number of interruptions over time based on a number of increments in the counter, monitoring a rate of increase in the number of interruptions over time and determining if the rate of increase in the number of interruptions over time is greater than a predetermined threshold. | 05-26-2011 |
20110125431 | Testing of a Photovoltaic Panel - A method for testing a photovoltaic panel connected to an electronic module. The electronic module includes an input attached to the photovoltaic panel and a power output. The method activates a bypass to the electronic module. The bypass provides a low impedance path between the input and the output of the electronic module. A current is injected into the electronic module thereby compensating for the presence of the electronic module during the testing. The current may be previously determined by measuring a circuit parameter of the electronic module. The circuit parameter may be impedance, inductance, resistance or capacitance. | 05-26-2011 |
20110130981 | SYSTEM AND METHODS FOR AGING COMPENSATION IN AMOLED DISPLAYS - Methods and systems to provide baseline measurements for aging compensation for a display device are disclosed. An example display system has a plurality of active pixels and a reference pixel. Common input signals are provided to the reference pixel and the plurality of active pixels. The outputs of the reference pixel is measured and compared to the output of the active pixels to determine aging effects. The display system may also be tested applying a first known reference current to a current comparator with a second variable reference current and the output of a device under test such as one of the pixels. The variable reference current is adjusted until the second current and the output of the device under test is equivalent of the first current. The resulting current of the device under test is stored in a look up table for a baseline for aging measurements during the display system operation. The display system may also be tested to determine production flaws by determining anomalies such as short circuits in pixel components such as OLEDs and drive transistors. | 06-02-2011 |
20110137590 | ARCING EVENT DETECTION - A system for detecting electrical arcing on an electrical power system includes: a) a data acquisition unit that is electrically connected to an electrical power system, wherein the data acquisition unit is configured to monitor signals indicative of a first periodic property of the electrical power system, wherein the signal includes a normal load component; and b) a computing device operably connected to the data acquisition unit. The computing device is programmed to: i) obtain first data from the data acquisition unit indicative of the temporal behavior of the first signal; ii) remove the normal load component from the first data; and iii) determine that an arcing event is present on the electrical power system when the at least one burst within the first data presents a generally sinusoidal shape which includes generally flat regions which are present where the generally sinusoidal shape crosses over a zero-magnitude line. | 06-09-2011 |
20110153234 | GROUND FAULT DETECTION SYSTEM AND METHOD - A ground fault detection system is provided. The ground fault detection system includes a magnetic core having first and second primary legs and a secondary leg disposed between the first and second primary legs. The ground fault detection system also includes first and second primary windings disposed around the first and second primary legs respectively and configured to introduce current in the first and second primary legs. Further, the ground fault detection system includes first and second secondary windings disposed around the first and second primary legs respectively and configured to detect a ground fault based upon a magnetic flux generated in response to the introduced current. | 06-23-2011 |
20110166809 | POWER DISTRIBUTION CIRCUIT DIAGNOSTIC SYSTEM AND METHOD - A diagnostic system for a power distribution circuit including a line, neutral and ground may include a switch configured to electrically connect the line and neutral, a first sensor configured to sense a line to neutral electrical parameter, and a second sensor configured to sense a neutral to ground electrical parameter. The system may also include a processor configured to close the switch, to observe at least some of the sensed electrical parameters before and after the switch is closed, and to identify a fault condition in the line or neutral based on the observed electrical parameters. | 07-07-2011 |
20110178740 | METHOD OF STORING EVALUATION RESULT, METHOD OF DISPLAYING EVALUATION RESULT, AND EVALUATION RESULT DISPLAY DEVICE - A method of storing an evaluation result includes the steps of: changing a first physical value related to a transistor constituting a semiconductor integrated circuit; changing a second physical value; measuring a deterioration value of reliability of the transistor with time according to the first physical value and the second physical value through a reliability evaluation; dividing the deterioration value into a plurality of continuous regions with a value of a predetermined range from a minimum deterioration value to a maximum deterioration value to obtain divided deterioration values; dividing the first physical value into a plurality of continuous regions with a value of a predetermined range; dividing the second physical value into a plurality of continuous regions with a value of a predetermined range; and storing the divided deterioration values in a storage unit according to the continuous regions of the first physical value and the second physical value. | 07-21-2011 |
20110184671 | TRANSIENT DETECTOR AND FAULT CLASSIFIER FOR A POWER DISTRIBUTION SYSTEM - Detection of fault occurrences within a power distribution system. A transient detector and fault classification system ( | 07-28-2011 |
20110184672 | INSULATION DIAGNOSTIC UNIT AND ALGORITHM FOR ELECTRIC MACHINE, AND EQUIPMENT INCLUDING THE DIAGNOSTIC UNIT - Partial discharge occurring in a continuously operated electric machine is monitored all the time. Even when the electric machine is mounted in mobility equipment, the partial discharge is monitored all the time. An insulation diagnostic unit includes: an instrument that performs spectrum analysis on an output of a sensor disposed near the electric machine; a data table in which an output of a load detection method for the electric machine and an output of the spectrum analysis instrument are recorded; a first routine that obtains a correlation coefficient on the basis of plural data items concerning the magnitudes of a spectrum relevant to a specific frequency, which is obtained by the spectrum analysis instrument, out of data items recorded in the data table, and plural data items of a load obtained at the times of measurement of the plural data items; and a second routine that classifies the noted spectrum relevant to the specific frequency into a spectrum of an environmental electromagnetic wave or a spectrum of an electromagnetic wave due to partial discharge from the electric machine on the basis of the value of the correlation coefficient obtained by the first routine. | 07-28-2011 |
20110196627 | METHOD AND DEVICE FOR EVALUATING AN ELECTRICAL INSTALLATION OF AN ELECTRICAL POWER SYSTEM - The present invention relates to a method for evaluating an electrical installation ( | 08-11-2011 |
20110196628 | DETERIORATION DETECTION CIRCUIT - A deterioration detection circuit which accurately measures the degree of deterioration of a device (particularly a transistor) in a semiconductor integrated circuit. The deterioration detection circuit includes a frequency measuring instrument for outputting data on the frequency of a ring oscillator and a judgment circuit for deciding whether the ring oscillator is acceptable or not. The judgment circuit receives frequency data, environment-dependent characteristic data indicating the relation between the operating environment and oscillation frequency of the ring oscillator, tolerance data indicating the tolerable oscillation frequency range for the ring oscillator, and environment-specific data for the ring oscillator in operation. An ideal oscillation frequency for the ring oscillator is calculated based on the environment-specific data and environment-dependent characteristic data and a decision is made as to whether or not the frequency data is within the range corresponding to the tolerance data. | 08-11-2011 |
20110208448 | TEST APPARATUS AND INFORMATION PROCESSING SYSTEM - Provided is a test apparatus that tests a device under test, comprising a plurality of processing sections that each send and receive signals to and from the device under test; a control apparatus that controls the processing sections; and an interrupt control section that notifies the control apparatus concerning interrupt requests generated by the processing sections, wherein, when an interrupt request is received from a processing section while the interrupt control section is in an interrupt enable state, the interrupt control section notifies the control apparatus concerning the interrupt and transitions to an interrupt disable state; when an interrupt request is received from the processing section while the interrupt control section is in the interrupt disable state, the interrupt control section does not notify the control apparatus concerning the interrupt; and when instructions are received from the control apparatus while the interrupt control section is in the interrupt disable state, the interrupt control section transitions to the interrupt enable state. | 08-25-2011 |
20110208449 | METHOD FOR DETECTING SINGLE PHASE GROUNDING FAULT BASED ON HARMONIC COMPONENT OF RESIDUAL CURRENT - The method for detecting single-phase grounding fault based on the harmonic component of residual current is provided, in which collecting and calculating the phase differences of third harmonic waves relative to the fundamental wave of the residual current in the feeder line, and judging if the phase differences of the residual current in the feeder line is into a threshold range, and judging if there is a suspected grounding fault, and confirming the fault event by judging the duration and the generated times of the suspected grounding fault. Another method for detecting single-phase grounding fault based on the harmonic component of residual current is provided, in which the residual current of neutral point is used. | 08-25-2011 |
20110218745 | METHOD AND APPARATUS TO MONITOR LOSS OF GROUND ISOLATION OF AN ELECTRIC MOTOR DRIVE CIRCUIT - A method for monitoring electric isolation of a high voltage DC bus to detect ground isolation faults includes monitoring voltage differentials between a positive DC electric power bus and a negative DC electric power bus and a chassis ground. Electrical isolation between each of the positive and negative DC electric power buses and the chassis ground is monitored using a ratio of the voltage differentials. | 09-08-2011 |
20110238337 | MEASUREMENT APPARATUS, MEASUREMENT METHOD, TEST APPARATUS AND RECORDING MEDIUM - Provided is a measurement apparatus for measuring an error of a modulation apparatus that outputs an output signal obtained as a sum of a first modulated signal output from a first modulating section and a second modulated signal output from a second modulating section. The measurement apparatus comprises a control section that causes the modulation apparatus to output an output signal having at least three different signal points; a measuring section that measures power of the output signal for each of the at least three signal points; and a calculating section that calculates at least one of an amplitude error and a phase error between the first modulated signal and the second modulated signal, based on the power of the output signal for each of the at least three signal points. | 09-29-2011 |
20110238338 | MOTOR DRIVING APPARATUS EASILY ANALYZABLE FOR CAUSE OF FAULT - Disclosed is a motor driving apparatus in which provisions are made so as to easily isolate the cause of a fault in the event of the occurrence thereof. The voltage and current in each phase of the AC power being supplied to a converter are detected, and the most recently detected data are stored in a power supply monitoring unit for a predetermined period of time. If an alarm occurs in the converter, inverter, or controller, the data currently held in the power supply monitoring unit are recorded in a recording unit. By displaying the thus recorded data, one can easily identify whether the cause of the alarm is due to the power supply or the motor driving apparatus itself. | 09-29-2011 |
20110238339 | ELECTRONIC COMPONENT FOR A SENSOR APPARATUS, SENSOR APPARATUS AND METHOD OF CONFIGURING A SENSOR APPARATUS - The invention relates to an electronic component for a sensor apparatus comprising a first terminal device for connecting a sensitive device which is influenceable by a target, a second terminal device for the external communication, and a control device and/or an evaluation device which provides output signals, wherein the component is programmable via the second terminal device, characterized by a first programming level in which parameters for the setup of the sensor apparatus are adjustable and a second programming level in which a characteristic curve of the sensor apparatus is adjustable, wherein the first programming level is hierarchically superordinate to the second programming level and adjustments and/or possibilities of adjustment in the second programming level are a function of adjustments in the first programming level. | 09-29-2011 |
20110246104 | SEMICONDUCTOR APPARATUS AND CHIP SELECTING METHOD THEREOF - A semiconductor apparatus includes an individual chip designating code setting block configured to generate a plurality of individual chip designating code of different values; an individual chip activation block configured to enable an individual chip activation signal among a plurality of individual chip activation signals, which corresponds to individual chip designating code, when the individual chip designating code matches the individual chip control code; and a control block configured to set the individual chip control code or output chip selection address as the individual chip control code in response to chip selection fuse signals and test fuse signals. | 10-06-2011 |
20110257910 | Method for Calibrating a Motor Control Circuit to Improve Temperature Measurement in an Electrical Motor - A method enables adjustment of a current sense voltage for accurate measurement of an operating temperature for an electrical motor. The method includes identifying a DC input voltage to a motor winding and a duty cycle corresponding to the DC input voltage, the duty cycle being identified with reference to a linear relationship between two inverter loss factors established for different DC input voltages within a range of voltages for the DC input voltage. A voltage across the motor winding is identified with reference to the identified duty cycle, the identified voltage not including voltage dropped across an inverter used to apply the DC input voltage to the motor winding. The identified voltage across the motor winding is used to identify a resistance change for the motor winding. | 10-20-2011 |
20110264388 | FAULT LOCATION IN ELECTRIC POWER DELIVERY SYSTEMS - Accurately calculating location of a fault even on a branched, non-homogenous, radial electric power distribution system. The calculation includes determining a calculated reactance or impedance to the fault, and uses the line parameters to determine locations on the system that match the calculated reactance to the fault. The calculation may further include a determination of faulted phase and eliminate fault location possibilities based on absence of the faulted phase at those locations. The calculation may further use data reported from line monitors such as faulted circuit indicators (FCIs). | 10-27-2011 |
20110264389 | Fault Location in Electric Power Delivery Systems - Accurately calculating location of a phase-to-phase fault even on a branched, non-homogenous, radial electric power distribution system. The calculation includes determining a calculated reactance to the fault without using positive-sequence current measurements, and uses the line parameters to determine locations on the system that match the calculated reactance to the fault. The calculation may further include a determination of faulted phase and eliminate fault location possibilities based on absence of the faulted phase at those locations. | 10-27-2011 |
20110270543 | PHOTOCONDUCTIVE PHOTODIODE BUILT-IN TEST (BIT) - A Built-In Test (BIT) for a photoconductive photodiode is performed using the health or characteristics of the photodiode's parasitic capacitance as a “proxy” for the health or characteristics of the photodiode itself. A failure or degradation of the photodiode manifests as a similar failure or degradation of the parasitic capacitance. Under normal operating conditions, the photoconductive photodiode responds to incident photons from a target by generating a photocurrent signal at its cathode. A processor processes the signals from one or more photodiodes to evaluate characteristics of the target. To perform the BIT, a time-varying voltage signal is applied at the photodiode's anode. This signal is coupled through the parasitic capacitance to produce a test current signal at the photodiode's anode. The processor processes the signal to evaluate the health or characteristics of the parasitic capacitance and thus the photodiode. | 11-03-2011 |
20110270544 | STORAGE DEVICE ENERGIZED ACTUATOR HAVING DIAGNOSTICS - A system having unified diagnostics where an electrical energy storage device may supply an actuator. Various techniques may be used to determine energy storage capacity and actuator current usage. Measured storage capacity and actuator current may indicate the health of the energy storage device and the actuator, respectively. Also, operation of a service switch for the actuator may be checked relative to its state. | 11-03-2011 |
20110270545 | MEASURING OF EARTH FAULT CURRENT - Method and apparatus for measuring an earth fault current in an output circuit of an inverter (INU) operating on the PWM principle and forming alternating-current voltage from direct-current voltage, the output currents (i | 11-03-2011 |
20110276284 | METHODS AND APPARATUSES FOR ESTIMATION AND COMPENSATION ON NONLINEARITY ERRORS - An estimation unit for estimating a nonlinearity error of a conversion circuit, such as an ADC, is adapted to receive a continuous-time input signal and output a digital output signal. In at least one embodiment, the continuous-time input signal is essentially bandlimited to an angular frequency band [ω | 11-10-2011 |
20110276285 | Apparatus and Method for Vital Signal State Detection in Overlay Rail Signal Monitoring - A railroad monitoring apparatus includes first and second diverse vital processing units, first and second current sensors configured to measure the current being provided to one or more signaling elements of an item of wayside signaling equipment, and means for measuring voltage levels being supplied to each of the signaling elements. The first processing unit receives a first current measurement from the first current sensor and the measured voltage levels, and the second vital processing unit receives a second current measurement from the second current sensor and the measured voltage levels. The vital processing units are each programmed to determine based on one or more of the first current measurement, the second current measurement and the measured voltage levels: (i) the state of the item of railroad wayside signaling equipment, (ii) failures within the item of railroad wayside signaling equipment, and (iii) failures within the monitoring apparatus itself. | 11-10-2011 |
20110276286 | ANALYSIS SUPPORT COMPUTER PRODUCT, APPARATUS, AND METHOD - A computer-readable, non-transitory medium stores a program that causes a computer to execute a process including acquiring a unique coefficient that is unique to a device in a circuit under test and is included in a function expressing fluctuation of leak current of the device; detecting as a group and based on the unique coefficient, devices having an identical or similar characteristic; converting first random variables into a single second random variable, the first random variables expressing fluctuation of leak current unique to each of the detected devices; yielding a function that expresses fluctuation of leak current of the detected devices, using the second random variable; and outputting the yielded function. | 11-10-2011 |
20110276287 | METHODS FOR DETECTING DAMAGE TO MAGNETORESISTIVE SENSORS - A system and method for detecting a damaged magnetoresistive sensor includes measuring a median DiffPN value of a group of GMR sensors on a module, the sensors characterized as having been deposited on a same wafer and having been lapped as a single unit; comparing the DiffPN values to the median; determining that physical and/or magnetic damage has occurred to an individual sensor if the difference in the DiffPN value of the individual sensor from the median is greater than a statistically predetermined value for the group of sensors; where the difference is at least one times the average of the standard deviations of a large number of normal modules or the average of the standard deviations of a large number of modules, wherein at least the largest and the smallest DiffPN value within the module is not included in the calculation of the module's standard deviation. | 11-10-2011 |
20110295530 | FAULT DIAGNOSIS DEVICE FOR AMPLITUDE MODULATION DEVICE - The fault diagnosis device is for diagnosing presence of a fault in an amplitude modulation device which modulates an amplitude of a carrier wave signal to generate a modulated wave signal, comprising. The fault diagnosis device includes a sampling means to perform sampling of at least one of the carrier wave signal and the modulated wave signal at a period different from a period of the carrier wave signal, and a diagnosis means to perform diagnosis of presence of a fault in the amplitude modulation device based on sampled values outputted from the sampling means. | 12-01-2011 |
20110307196 | SYSTEM AND METHOD FOR GROUND ISOLATION DETECTION IN A VEHICLE - A first amplifier is arranged to receive a first signal from a first bus terminal. A second amplifier is configured to receive a second signal from a second bus terminal. An inverter input of an inverter is coupled to the output of the first amplifier. An input or inputs of an analog-to-digital converter are coupled to an inverter output of the inverter and the output of the second amplifier. The analog-to-digital converter is capable of producing a digital signal representative of the signals received from the first bus terminal and the second bus terminal. A data processor is capable of receiving an output of the analog-to-digital converter. The data processor is configured to apply one or more frequency domain transforms to the digital signal. The data processor identifies a circuit location of the ground fault or degraded isolation, a type of ground fault, or both based on the application of the frequency domain transform. | 12-15-2011 |
20110307197 | DISTRIBUTED REFLECTOMETRY DEVICE AND METHOD FOR DIAGNOSING A TRANSMISSION NETWORK - A distributed reflectometry device for diagnosing a network is disclosed. According to one aspect, the device includes at least one transmission line and several reflectometers connected to the network. A transmission portion of the device includes a first memory configured to store at least one test signal and a second memory configured to store weighting coefficients. The transmission portion may also include a first multiplier of a test signal (s) with a coefficient β | 12-15-2011 |
20110313691 | DIRECT SEQUENCE SPREAD SPECTRUM PREDICTIVE CABLE AND COMPONENT FAILURE TECHNOLOGY - There are disclosed systems and methods of determining a fault location on a wire. In an embodiment, a system includes a PN code having a chip-time. Software code is provided for delaying the PN code a series of delays to form delayed PN samples, a sum of the series of delays being less than one chip-time. Software code is provided for summing the delayed PN samples with the PN code to form a summed sequence. Software code is provided for transmitting the summed PN sequence to the wire. Software code is provided for receiving a signal from the wire related to the summed PN sequence. Software code is provided for mixing the signal received from the wire with a delayed copy of the summed PN sequence so as to form a mixed signal. Software code is provided for integrating the mixed signal to map faults. Other embodiments are also disclosed. | 12-22-2011 |
20120004867 | SYSTEMS AND METHODS FOR CHARACTERIZING FAULT CLEARING DEVICES - Systems and methods for characterizing a device that operated to clear a fault in a power line, such as a power distribution system feeder, are disclosed. Characterizing the device may include receiving measured data corresponding to a current measured along the feeder proximate a substation bus, determining from the measured data that a fault has occurred in at least one phase and has been cleared, subtracting reference data from the measured data to estimate residual fault data, and estimating from the residual fault data a characteristic of the device that operated to clear the fault. The systems may include an Intelligent Electronic Device (IED) and a processor linked to the IED. | 01-05-2012 |
20120004868 | APPARATUS AND METHOD TO CHARACTERIZE MULTIJUNCTION PHOTOVOLTAIC SOLAR CELLS - An apparatus and method to electrically and optically characterize a multijunction solar cell. The apparatus can have as many light sources as there are subcells in the multijunction solar cell. Each light source has an optical spectrum that falls within the bandgap energy of a corresponding subcell. Each light source has a controllable intensity level. | 01-05-2012 |
20120010829 | Fault diagnosis method, fault diagnosis apparatus, and computer-readable storage medium - A fault diagnosis may perform a statistical analysis based on a fault report of a semiconductor device, in order to output a feature that becomes the cause of the fault depending on a contribution of the feature to the fault. A process of grouping circuit information of the semiconductor device into N groups using one kind of feature as an index may be performed for K kinds of features, in order to group the circuit information into K×N groups. A sum total of feature quantities of partial circuits belonging to each of the groups may be output in a form of a list of learning samples. | 01-12-2012 |
20120010830 | SYSTEMS AND METHODS FOR CLASSIFYING POWER LINE EVENTS - Systems and methods for classifying power line events are disclosed. Classifying power line events may include receiving measured data corresponding to a signal measured on a power line, such as proximate a substation bus or along the power line, determining from the measured data that the power line event has occurred, extracting at least one event feature from the measured data, and determining at least partially from the at least one event feature at least one probable classification for the power line event. The systems may include an Intelligent Electronic Device (IED) connected to the power line and a processor linked to the IED. | 01-12-2012 |
20120022808 | METHOD AND DEVICE FOR OVERLOAD DETECTION IN BATTERY-OPERATED DEVICES HAVING AN ELECTRIC MOTOR - In a method for detecting an overload situation in a battery-operated device having an electric motor, a load current of the electric motor is ascertained and used to deduce a thermal overload of the battery in such a manner, that, starting out from a static temperature limit, a temporally variable, maximum permissible temperature limit for the battery is calculated using a specifiable function dependent on the ascertained load current. The calculated, variable temperature limit is compared to a current, measured temperature of the battery, and a thermal overload of the battery is deduced from the result of the comparison. | 01-26-2012 |
20120065908 | PROTECTION DEVICE, CORRESPONDING METHOD AND COMPUTER SOFTWARE PROGRAM - A device is provided for protecting an electronic payment terminal. The device includes at least one capacitive detector placed between a lower mechanical supporting element of a keypad of the terminal and an upper mechanical supporting element of the keypad of the terminal. The at least one detector is configured to deliver a reference capacitance. A capacitive measurement microprocessor is electrically connected to the at least one capacitive detector and configured to detect a variation of capacitance of the at least one capacitive measurement support. A transmitter is configured for transmitting a piece of information representing the capacitive variation, when an absolute value of a difference between the measured capacitance and the reference capacitance exceeds a predetermined threshold. The capacitive detector is conformed so that it extends between holes of the lower mechanical supporting element. | 03-15-2012 |
20120072138 | SYSTEM AND METHOD FOR STREETLIGHT MONITORING DIAGNOSTICS - One or more example diagnostics may be implemented as part of an intelligent luminaire manager or other radio frequency (RF) device that is in communication with an equipment or fixture such as a luminaire. Example diagnostics can determine a status such as a fixture malfunction, a cycling condition, a miswiring configuration, or another condition. The determined status can be wirelessly transmitted from the intelligent luminaire manager or other radio frequency device to a network server via a network. The network may be a network of intelligent luminaire managers and/or RF devices. | 03-22-2012 |
20120084027 | SYSTEM AND METHOD FOR MONITORING PERFORMANCE OF A PHOTOVOLTAIC ARRAY - The present disclosure provides a system and method for monitoring performance of a photovoltaic array. The system and method reduces the need for monitoring equipment by collecting measurement data associated with a plurality of photovoltaic strings. Failure and performance degradation detection is improved through the use of monitoring conditions, performance thresholds, and auto-calibration. Various user interfaces enable a user to modify or adjust the monitoring system and method, as well as monitor the performance of a photovoltaic array. | 04-05-2012 |
20120089351 | Method and Device for Detecting Fault of Signal Processing Equipment and Optical Interface Board Online - The disclosure relates to a method and device for detecting a fault of signal processing equipment and an optical interface board on line. The signal processing equipment includes n function modules F | 04-12-2012 |
20120095706 | ACOUSTIC APPARATUS AND ACOUSTIC SENSOR APPARATUS INCLUDING A FASTENER - An acoustic sensor apparatus includes a housing, a fastener structured to fasten together the housing and an electrical power conductor, an acoustic sensor structured to detect acoustic noise from the electrical power conductor and output a signal, and a circuit structured to detect an electrical conductivity fault from the signal. | 04-19-2012 |
20120095707 | Method for Identifying Type of Fault on Power Line - A method for identifying the type of faults occurred on a power line, characterized in that it comprises: calculating a fault point voltage on fault points based on terminal voltage and fault locations of the power line; adopting the fault point voltage corresponding to a maximum transition resistance as a setting value; comparing the fault point voltage on fault points with the setting value; and identifying the type of fault as a permanent type or a transient type based on the result of the comparison. | 04-19-2012 |
20120101749 | Advanced Metering Infrastructure Network Visualization - Systems and methods for visualization of Advanced Metering Infrastructure (AMI) deployments are disclosed. A status associated with communications towers or metering devices in an AMI deployment can be monitored based on alarms generated by a metering vendor system or based on thresholds specified in the AMI operations database. A user interface can be generated that allows the AMI deployment to be visualized, with status indicators associated with statuses overlaid on a map. The user interface can further facilitate visualization of progress of tasks associated with AMI operations. | 04-26-2012 |
20120109545 | REMOTE POWER OUTAGE & RESTORATION NOTIFICATION - Power outages and restorations at customer premises can be automatically detected and reported. A method may include receiving, from a network terminal, a first notification associated with a power outage; retrieving location information associated with the network terminal; sending a second notification indicating that the outage has occurred and that includes the location information associated with the network terminal; retrieving prior outage information that corresponds to a set of network terminals associated with a group of set top boxes; determining that an outage event is triggered, when a quantity of outages is greater than a threshold, where the quantity of outages is based on the outage and other outages obtained from the prior outage information; and sending a third notification based on the determination that the outage event is triggered, where the third notification includes information associated with the quantity of outages that enables a server to remedy the outage event in a manner that does involve users of the group of set top boxes. | 05-03-2012 |
20120109546 | IDENTIFICATION OF ROTOR BROKEN BAR IN PRESENCE OF LOAD PULSATION - A method for detecting an anomaly in a rotor of an induction machine is provided. The method includes obtaining or receiving three-phase stator voltage and current signals from the induction machine connected to a time varying load. The method also includes processing the three-phase stator voltage and current signals by transforming into corresponding two-phase quantities. Further, the method includes transforming the two-phase quantities into two quadrature components into a two-phase reference frame. The method includes analyzing a plurality of in-phase components and the quadrature components. Finally, the method includes detecting the presence of an anomaly and segregating the anomaly from load variations based on the analysis of the plurality of in phase components and the quadrature components, thereby reducing false alarm. | 05-03-2012 |
20120109547 | COMPREHENSIVE METHOD OF ELECTRICAL FLUID HEATING SYSTEM FAULT DETECTION AND HANDLING - A method and system are provided to eliminate the risk of over temperature concerns associated with electrical heating devices, which if undetected may result in an electrical over temperature condition. The electrical heating system may be applied to the detection and control structure of other automotive electrical loads where thermal concerns may exist. The electrical heating system combines several layers of fault detection strategies, to form a unique comprehensive approach to prevent and detect potential electrical fault conditions, which if undetected and/or controlled may result in an electrical over temperature condition. | 05-03-2012 |
20120109548 | MEASUREMENT APPARATUS, MEASUREMENT METHOD AND RECORDING MEDIUM - A measurement apparatus for measuring a characteristic (for example, EVM) of a device under measurement provided with a quadrature modulator or a quadrature demodulator is provided. The measurement apparatus includes an I-Q error measuring section that measures a frequency characteristic of an I-Q error of the device under measurement, and an error amount calculating section that calculates, based on the frequency characteristic of the I-Q error, an error amount observed when the device under measurement is supplied with a predetermined signal. | 05-03-2012 |
20120116696 | SYSTEMS, DEVICES AND METHODS FOR PREDICTING POWER ELECTRONICS FAILURE - The present disclosure provides systems, devices, and methods of utilizing signal-processing techniques to detect at least one degrading component of a power conversion unit located in an energy generation or storage unit. The systems, devices, and methods of the present disclosure are applicable to a wide range of energy generation and energy storage units, from commercial power plants to residential solar applications to electric vehicles. The present disclosure provides a real-time data-acquisition system that extracts actual performance data during the operation of the unit, and compares its performance with historic performance (especially changes over time or derivative performance information) in order to predict device performance or failure. | 05-10-2012 |
20120123708 | METHOD AND SYSTEM FOR TRANSIENT AND INTERMITTENT EARTH FAULT DETECTION AND DIRECTION DETERMINATION IN A THREE-PHASE MEDIAN VOLTAGE ELECTRIC POWER DISTRIBUTION SYSTEM - A method and a system for transient and intermittent earth fault detection and direction determination in a three-phase median voltage electric power distribution system which comprises many lines. The system comprises: sampling means wherein the residual current and residual voltage on said lines are sampled, transient direction detection means based on instantaneous power, random intermittent detection means based on intermittent change of residual current amplitude, means of integrating transient direction and random intermittent detection, and alarm means indicating maintenance personnel to check the status of one line. | 05-17-2012 |
20120130655 | DEGRADATION MONITORING METHOD AND DEGRADATION MONITORING DEVICE FOR ELECTRICITY STORAGE DEVICE - A damage calculation unit ( | 05-24-2012 |
20120150459 | TESTING DEVICE, TEST SYSTEM INCLUDING THE SAME, AND METHOD THEREOF - A testing device includes a signal sensing unit and a signal processing unit. The signal sensing unit generates a test output signal by sensing a signal from a device under test including a plurality of passive elements that are connected in parallel. The signal processing unit detects an open-type fault of the plurality of passive elements by measuring an impedance of the device under test based on element characteristic information of the plurality of passive elements. | 06-14-2012 |
20120150460 | METHOD OF FAULT PHASE SELECTION AND FAULT TYPE DETERMINATION - The present invention is concerned with a method for faulted phase selection and fault type determination in electric power lines applicable both to series compensated and uncompensated power lines. The method comprising a fault inception detection and an estimation of fault phase current signals, pre-fault current signals and zero-sequence current in order to receive the absolute value of incremental current signals and their maximum value from which real value indicators for phase to phase faults real value indicators for 3-phase fault and a real value indicator for ground fault are determined. The method further comprises
| 06-14-2012 |
20120158325 | METHOD AND SYSTEM FOR MONITORING TRANSFORMER HEALTH - A method, system and computer program product for determining the health of a transformer are provided. The method includes computing an effective turns ratio based on a primary electrical parameter associated with a primary winding of the transformer and a secondary electrical parameter associated with a secondary winding of the transformer. The method further includes computing an operational magnetizing current based on the effective turns ratio and primary and secondary currents of the transformer or primary and secondary voltages of the transformer. Finally, the method includes determining an inter-turn winding health indicator based at least in part on the operational magnetizing current. | 06-21-2012 |
20120173173 | RAM AIR TURBINE WITH FLUX REGULATED PERMANENT MAGNET GENERATOR AND TESTING METHOD - A deployable ram air turbine assembly includes a rotatable turbine, a drivetrain mechanically connected to the rotatable turbine, and a flux regulated permanent magnet generator operably connected to the drivetrain. | 07-05-2012 |
20120173174 | Method and Apparatus for Monitoring Electric Power Transmission, Disturbances and Forecasts - An apparatus ( | 07-05-2012 |
20120185185 | REMOTE ELECTRICAL SAFETY DIAGNOSIS SYSTEM AND APPARATUS - The present invention relates to an electrical safety diagnosis system and apparatus, which are configured to enable sensed data on user surroundings in a U-city environment, such as electrical safety data for switchboards and distribution boards, and water leakages, faulty outlet connections, etc., to be managed remotely by a server at a U-city integrated information center. In particular, the present invention relates to an electrical safety diagnosis system and apparatus which use a U-city integrated information network to preemptively perform checking and analyses for potential electrically-induced disasters that can occur in public facilities, stores, buildings, and homes within a U-city, by means of a U-city integrated information center, and prevent electrical fires or shocks at the electrical equipment of switchboards or distribution boards, and dangerous conditions (such as water leakages, abnormal temperatures, gas, and faulty outlet connections) in facilities used by users. The remote electrical safety diagnosis system of the present invention comprises: a digital switchboard including the functions of checking electrical equipment in a switchboard room using a contactless arc sensor and a partial discharge sensor on a power line, to diagnose the safety of the electrical equipment, diagnosing an arc or partial discharge in a detected waveform and storing the diagnosed data, and transmitting the diagnosed data to a higher level server; and a digital distribution board including a main circuit breaker and a partial circuit breaker, for checking an AC voltage or current input through the power line, storing the checked data, and transmitting the diagnosed data to the higher level server. | 07-19-2012 |
20120191383 | METHOD AND SYSTEM FOR ACQUIRING AND ANALYZING COIL DATA - A system for acquiring and analyzing fault conditions for at least one coil of Magnetic Resonance Imaging (MRI) system. Each of the at least one coils is electrically connected through a transmit/receive (T/R) bias circuit to an interface. The system has a central processing unit with a processor configured to execute programmable instructions which when executed by the processor cause the processor to conduct circuit tests at predetermined intervals for the at least one coil, acquire data for the at least one coil to construct a data log with a plurality of input events, and algorithmically filter and analyze the plurality of input events to create an output configured to predict a failure event of the at least one coil. A method for analyzing and acquiring fault conditions is also provided. | 07-26-2012 |
20120191384 | SYSTEMS AND METHODS FOR PREDICTING FAILURE OF ELECTRONIC SYSTEMS AND ASSESSING LEVEL OF DEGRADATION AND REMAINING USEFUL LIFE - Disclosed are systems and methods for prognostic health management (PHM) of electronic systems. Such systems and methods present challenges traditionally viewed as either insurmountable or otherwise not worth the cost of pursuit. The systems and methods are directed to the health monitoring and failure prediction of electronic systems, including the diagnostic methods employed to assess current health state and prognostic methods for the prediction of electronic system failures and remaining useful life. The disclosed methodologies include three techniques: (1) use of existing electronic systems data (circuit as a sensor); (2) use of available external measurements as condition indicators and degradation assessor; and (3) performance assessment metrics derived from available external measurements. | 07-26-2012 |
20120197557 | String Failure Monitoring - A method of monitoring a plurality of strings of a photovoltaic system connected to a power inverter includes measuring current values from individual strings to the power inverter; determining a reference current value from the measured current values; and standardizing the measured current values to the reference current value. The method further includes and analyzing the standardized current values of individual strings within representative time periods by comparison with comparison values established for the individual strings. Based on the analysis a failure of an individual string is ascertained. | 08-02-2012 |
20120197558 | LOADS MANAGEMENT AND OUTAGES DETECTION FOR SMART GRID - A system for managing loads and detecting outages over electric power lines that comprises wireless temperature sensors which are attached to bare conductors of the electric power line(s), at line junctions or lines' splitting points, for sensing temperatures generated by the currents flow in the conductors. The system also includes a Current Measurement Units (CMU) for wirelessly reading the temperature sensed by the sensors, to allow cheap, rapid and easy RMS currents measurements on power lines at any voltage levels, by using temperature into current conversion formulas and tables. | 08-02-2012 |
20120197559 | METHOD OF PREDICTING PROBABILITY OF ABNORMALITY OCCURRENCE IN OIL-FILLED ELECTRICAL DEVICE - The present invention is a method of predicting the probability of abnormality occurrence in an oil-filled electrical device, including the steps of: measuring a residual dibenzyl disulfide concentration in an insulating oil sampled from an oil-filled electrical device in operation; determining an estimated decrease of the residual dibenzyl disulfide concentration, relative to an initial dibenzyl disulfide concentration at the start of operation of the oil-filled electrical device; calculating the initial dibenzyl disulfide concentration from the residual dibenzyl disulfide concentration and the estimated decrease; and comparing the initial dibenzyl disulfide concentration with a specific management value. | 08-02-2012 |
20120203479 | FAST FAULT ISOLATION AND RESTORATION FOR DISTRIBUTION NETWORKS - In one embodiment, a method includes obtaining information relating to a steady state operation of a portion of an electrical network, the electrical network including a plurality of components, the information being obtained from the plurality of components while the portion of the electrical network is operating at steady state, wherein the information is obtained through a communications network that at least partially overlays the electrical network. The method also includes detecting a fault in the electrical network, isolating the location of the fault, and restoring the electrical network. The fault is detected by at least a first component of the plurality of components. Restoring the electrical network includes determining when the first component owns the fault. Determining when the first component owns the fault includes at least processing the information obtained from the plurality of components. | 08-09-2012 |
20120209547 | METHOD AND APPLIANCE FOR THE DETECTION OF CURRENT DISCONTINUITY IN SWITCHED ELECTRICAL POINT OF AN ALTERNATING NETWORK - Method and appliance which detects if the interruption of current to an electrified load which is connected to a switched electrified point of an alternating network was by the user volition, or is due to a general electrical blackout, or if there was no interruption of electrification. With the aid of a microcontroller, the network voltage is calculated and then, by measuring period T, existence of rectification is calculated, in order to determine the status of switch ( | 08-16-2012 |
20120221262 | ELECTRONIC DEVICE INTEGRITY MONITORING APPARATUS - A storage unit stores a first reference value of an input/output electric signal into/from control unit and a second reference value of an input/output electric signal into/from a monitoring unit. If the amount of deviation between the input/output electric signal into/from the control unit and the first reference value exceeds a threshold value, a first caution signal output unit detects degradation of the control unit and outputs a caution signal. If the amount of deviation between the input/output electric signal into/from the monitoring unit and the second reference value exceeds a threshold value, a second caution signal output unit detects degradation of the monitoring unit and outputs a caution signal. The first and second reference values are acquired and stored in the storage unit in a period between completion of production of the control unit and the monitoring unit and start of the operation thereof. | 08-30-2012 |
20120226453 | CIRCUIT BREAKER TRIP UNIT - A trip unit for a circuit breaker having at least one sensor for monitoring a current in a protected circuit and a tripping system is provided. The trip unit includes a first controller operably coupled to receive a current signal from the at least one sensor and electrically coupled to the tripping system. The first controller includes a first processor that transmits a first signal to the tripping system in response to a detection of a first undesired condition. A second controller is operably coupled to receive the current signal from the at least one sensor and is electrically coupled to the tripping system in parallel with the first controller. The second controller includes a second processor that detects the first condition and transmits a second signal to the tripping system after a predetermined first time period. | 09-06-2012 |
20120232813 | METHODS AND SYSTEM OF AUTOMATING TRACK CIRCUIT CALIBRATION - A method for calibrating a track circuit is provided. The track circuit includes a transmit processing unit, a receive processing unit, and a plurality of rails coupled in series to form a track section having a first end and a second end. The transmit processing unit is coupled to the track section adjacent the first end. The receive processing unit is coupled to the track section adjacent the second end. The method includes operating the transmit processing unit so that a first voltage is applied to the track section, operating the receive processing unit to detect a first current signal, and if a parameter of the first current signal is not within a predetermined acceptable range, then communicating with the transmit processing unit so that the transmit processing unit applies a second voltage to the track section, the second voltage having a different magnitude than the first voltage. | 09-13-2012 |
20120239319 | SYSTEM FOR DETECTING A SHORT CIRCUIT ASSOCIATED WITH A DIRECT CURRENT BUS - The system comprises a direct current bus having a positive terminal and a negative terminal. A first switching transistor and a second switching transistor have their respective switched terminals connected in series with respect to each other between the positive terminal and the negative terminal. A primary supply is arranged to generating a test voltage that is lower than an operational voltage of the direct current bus. The test voltage is applied between the positive terminal and the negative terminal of the direct current bus. A primary thermal circuit is associated with the supply for detecting whether the supply exceeds an operational temperature threshold. The thermal circuit provides a signal or logic level state indicative of a detected short circuit in the direct current bus if the primary supply exceeds the operational temperature threshold. | 09-20-2012 |
20120239320 | RELIABILITY CALCULATION FOR SUBSTATION AUTOMATION SYSTEMS - A method and device automatically extract, to a maximum extent, reliability-relevant information from a Substation Configuration Description (SCD) file describing an electric power transmission or distribution substation. The information in the SCD file is used to identify the physical topology of a communication network of a Substation Automation (SA) system, and all dataflow relating to a given SA functionality or Logical Node (LN). An LN reliability measure for the latter is calculated, involving reliability indications specific to each element or device participating in the dataflow. A number of LN reliability measures are consolidated to produce an overall reliability for the SA system architecture or communication network topology. The method and tool minimize the engineering effort required to perform a reliability calculation, and thus allow comparing the reliability of different SA architectures with minimal effort and intervention of a reliability engineer. | 09-20-2012 |
20120239321 | SURGE ARRESTOR CONDITION MONITORING - A monitoring device ( | 09-20-2012 |
20120259562 | PROCESSING SYSTEM FOR DETECTING IN-SITU ARCING EVENTS DURING SUBSTRATE PROCESSING - A processing system for detecting in-situ arcing events during substrate processing is provided. The processing systems includes at least a plasma processing chamber having a probe arrangement, wherein said probe arrangement is disposed on a surface of said processing chamber and is configured to measure at least one plasma processing parameter. The probe arrangement includes a plasma-facing sensor and a measuring capacitor, wherein the plasma-facing sensor is coupled to a first plate of the measuring capacitor. The probe arrangement also includes a detection arrangement that is coupled to a second plate of the measuring capacitor, wherein the detection arrangement is configured for converting an induced current flowing through the measuring capacitor into a set of digital signals, which is processed to detect the in-situ arcing events. | 10-11-2012 |
20120265457 | SYSTEMS AND METHODS FOR DETECTING MOTOR ROTOR FAULTS - Systems and methods for detecting fault conditions in a rotor of an electric induction motor are disclosed. In certain embodiments, a method for detecting fault conditions may include sampling a plurality of currents from an electric induction motor to obtain a plurality of current data points, calculating a global maximum magnitude of the plurality of current data points in the frequency domain over a range of predetermined frequencies, calculating an average magnitude of the plurality of current data points in the frequency domain over the range of predetermined frequencies, and declaring a motor rotor fault condition based on a comparison between the average magnitude and a first predetermined threshold, a comparison between a difference between the global maximum magnitude and the average magnitude and a second predetermined threshold, and a comparison between the global maximum magnitude and at least a third predetermined threshold. | 10-18-2012 |
20120271572 | VARIABLE FREQUENCY DRIVE AND METHODS FOR FILTER CAPACITOR FAULT DETECTION - Variable frequency motor drives and control techniques are presented in which filter capacitor faults are detected by measuring filter neutral node currents and/or voltages and detecting changes in a frequency component of the measured neutral condition and/or based on input current unbalance. | 10-25-2012 |
20120278012 | DEVICE AND METHOD FOR DETECTING AND LOCATING DEFECTS IN UNDERGROUND CABLES - A device and method for detecting and locating defects in a cable are provided. The device and method may include using sensor feedback to determine that an insulation defect exists and to calculate the location of the insulation defect in a cable. The method may include performing principle component analysis to determine whether an insulation defect occurs and using extracted data to determine the location of the insulation defect. | 11-01-2012 |
20120290228 | METHOD OF MEASURING ELECTRICAL RESISTANCE OF JOINTS - A method for measuring electrical resistance of a joint includes supplying a first current between a first end of a first member of the joint and a first end of a second member of the joint. The method also includes measuring a first voltage between a second end of the first member and a second end of the second member. The first ends of the first member and the second member are oriented or situated opposite of the joint from the second ends of the first member and the second member. The method also includes calculating a first joint resistance of the joint from the supplied first current and the measured first voltage. | 11-15-2012 |
20120290229 | DIAGNOSTIC METHOD AND APPARATUS FOR ASSESSING THE INSULATION CONDITION OF ELECTRICAL EQUIPMENT INSULATED WITH OIL - A diagnostic method and apparatus for assessing the insulation condition of electrical equipment ( | 11-15-2012 |
20120296583 | TEST CARD AND MOTHERBOARD MONITORING SYSTEM - An exemplary test card includes a display unit for displaying a real time status of a number of electric power supply modules of a motherboard, and a programmable logic chip. The display unit includes at least one seven segment LED display. The programmable logic chip gains an effective data of the real time status, and drives the display unit to display the real time status based on the effective data. The real time status can indicate a normal working status, or an abnormal working status if one or more of the power supply modules is not working normally. | 11-22-2012 |
20120296584 | MPPT CONTROLLER, SOLAR BATTERY CONTROL DEVICE, SOLAR POWER GENERATION SYSTEM, MPPT CONTROL PROGRAM, AND CONTROL METHOD FOR MPPT CONTROLLER - Even at an unknown power point, control by estimated maximum power point is carried out. An MPPT controller ( | 11-22-2012 |
20120303297 | Systems and Methods for Determining Electrical Faults - Certain embodiments of the invention may include systems, methods for providing determining electrical faults. According to an example embodiment of the invention, a method is provide for determining electrical faults. One method can include providing switch circuitry including at least one first switch detector resistor in parallel communication with at least one switch; providing terminal board circuitry including at least one terminal board resistor in parallel communication with the switch circuitry and in communication with a power source; receiving a power source reference; comparing a field voltage value to a generated reference voltage value, generating a comparison value output based at least in part on the comparison of the field voltage value and the generated reference voltage; and determining one of a plurality of field conditions based at least in part on the comparison value output. | 11-29-2012 |
20120310556 | PHOTOINDUCED CARRIER LIFETIME MEASURING METHOD, LIGHT INCIDENCE EFFICIENCY MEASURING METHOD, PHOTOINDUCED CARRIER LIFETIME MEASURING DEVICE, AND LIGHT INCIDENCE EFFICIENCY MEASURING DEVICE - Disclosed is a photoinduced carrier lifetime measuring method capable of obtaining photoinduced carrier effective lifetime of a semiconductor substrate with high accuracy regardless of the surface state of the sample. The method includes the steps of: irradiating a microwave onto a semiconductor substrate while periodically pulse-irradiating an induction light onto the semiconductor substrate; detecting the microwave transmitted through the semiconductor substrate or reflected by the semiconductor substrate; and obtaining the effective lifetime of photoinduced carriers generated in the semiconductor substrate by the pulse irradiation of the induction light, based on an irradiation duration Ti and a non-irradiation duration T | 12-06-2012 |
20120316802 | SYSTEM AND METHOD FOR MONITORING PHOTOVOLTAIC POWER GENERATION SYSTEMS - A system and method for monitoring photovoltaic power generation systems or arrays, both on a local (site) level and from a central location. The system includes panel and string combiner sentries or intelligent devices, in bidirectional communication with a master device on the site to facilitate installation and troubleshooting of faults in the array, including performance monitoring and diagnostic data collection. | 12-13-2012 |
20120316803 | SEMICONDUCTOR TEST DATA ANALYSIS SYSTEM - The invention concerns a system for processing semi-conductor test data relating to a plurality of dies formed by a manufacturing process on at least one silicon wafer, the system comprising: an input arranged to receive said semiconductor test data ( | 12-13-2012 |
20120316804 | TECHNIQUE FOR ARC DETECTION IN PHOTOVOLTAIC SYSTEMS AND OTHER SYSTEMS - A method includes receiving data associated with operation of a high-voltage system, determining a power spectrum associated with the data, and dividing the power spectrum into multiple bands. The method also includes filtering one or more interfering signals from the power spectrum within the bands and generating an arc detection result indicative of whether an electrical arc is present in the high-voltage system using remaining signals within the bands. Filtering the interfering signal(s) could include identifying one or more peak values at one or more frequencies in each of the bands and at least partially reducing a magnitude of the power spectrum at each of the one or more frequencies in each of the bands. The arc detection result can be generated by summing magnitudes of the remaining signals in each of the bands and applying at least one scaling factor to at least one of the summations. | 12-13-2012 |
20120316805 | ZONE SELECTIVE INTERLOCKING TEST METHOD AND APPARATUS, AND CIRCUIT INTERRUPTER APPARATUS AND POWER DISTRIBUTION SYSTEM INCLUDING THE SAME - A circuit interrupter apparatus includes circuit interrupter and a device. The circuit interrupter includes separable contacts, an operating mechanism structured to open and close the separable contacts, and a trip mechanism cooperating with the operating mechanism to trip open the separable contacts. The trip mechanism includes a zone selective interlocking input and a zone selective interlocking output. The device includes a first input electrically interconnected with the zone selective interlocking input, a second input electrically interconnected with the zone selective interlocking output, and an indicator circuit structured to indicate that the zone selective interlocking input occurred at the first input or that the zone selective interlocking output occurred at the second input. | 12-13-2012 |
20120323505 | METHOD FOR DE-EMBEDDING IN NETWORK ANALYSIS - A method is provided for de-embedding fixtures and/or probes from measurements of devices where probes and fixtures are connected between the ports of a network analysis instrument and a device-under-test. | 12-20-2012 |
20120323506 | Semiconductor Defect Signal Capturing and Statistical System and Method - This invention, embodied in software, is a defect signature detection and analysis system to group and classify defects received from semiconductor inspection tools into categories which identify the defect source. This system includes on-line monitoring devices, signal analytical and statistical devices and information database. The signal analytical device includes an analysis unit, capturing unit and an information queue. The capturing unit includes a number of sub-units, including sequential, overlap and iterative detection, grouping, and undefined signal detection. The system uniquely uses image processing techniques on non-image data to group individual defects into larger clusters, thereby increasing the probability of correct classification of the defect modes on semiconductor wafers, while decreasing incorrect or missing classifications. The system improves accuracy and integrity of these captured defect signals, enabling the statistical methods of the present invention to substantially replace the manual inspection of the prior art, and to decrease semiconductor manufacturing cost. | 12-20-2012 |
20120330582 | METHOD OF HIGH IMPEDANCE GROUNDFAULT DETECTION FOR DIFFERENTIAL PROTECTION OF OVERHEAD TRANSMISSION LINES - The invention concerns a method of impedance groundfault detection for differential protection of an overhead transmission line in a three-phase high voltage electric power transmission system which comprises many lines ( | 12-27-2012 |
20120330583 | INSTRUMENT AND METHOD FOR DETECTING PARTIAL ELECTRICAL DISCHARGES - An instrument ( | 12-27-2012 |
20130013231 | SYSTEM AND METHOD FOR PREDICTING MECHANICAL FAILURE OF A MOTOR - A method for a vehicle having plural electric motors includes generating motor electrical signatures for the motors. The motor electrical signatures represent one or more characteristics of electrical energy that is supplied to the motors. The method also includes identifying one or more fault measures of each of the motor electrical signatures. The fault measures are indicative of mechanical characteristics of the motors. The method further includes comparing the one or more fault measures of each motor with the one or more fault measures of the other motors in the same vehicle and predicting an impending mechanical failure of one or more of the motors based on comparing the fault measures of the motors. | 01-10-2013 |
20130018606 | Short Detection in Battery CellsAANM White; David A.AACI HoustonAAST TXAACO USAAGP White; David A. Houston TX USAANM Benckenstein, JR.; Claude L.AACI StaffordAAST TXAACO USAAGP Benckenstein, JR.; Claude L. Stafford TX US - Internal shorts and other failures in lithium-ion battery cells may be detected during balancing of the battery cells. A counter may be used to detect when a battery cell is behaving differently than other battery cells by balancing more or less frequently. The counter may increment each time a battery cell is balanced to the other battery cells. A misbehaving battery cell may be flagged, when the counter exceeds a threshold value, for safety checks before an overheating event occurs. This misbehaving battery cell may be faulty due to an internal short. If the faulty battery cell is not corrected by replacement with a different battery cell or corrected by a user resetting the counter, the misbehaving battery cell may be disconnected to prevent the overheating event. | 01-17-2013 |
20130024139 | Current Device - A device and a method are suitable for use in measuring electric current within an electrical system. The device comprises a current sensor for generating a first signal representative of the electric current within at least one portion of the electrical system, a processor coupled to the output of the current sensor for digitally generating a second signal representative of electric current data based on the first signal, and a transceiver coupled to the processor, where the transceiver transmits the electric current data representative of the second signal to a data collection unit for storage and analysis. The device can be used in the electrical systems of vehicles such as automobiles and trucks; construction, agriculture, and mining equipment; trains; aircraft; and stationary equipment such as generators. | 01-24-2013 |
20130024140 | WIRE HARNESS CONTINUITY INSPECTION METHOD AND WIRE HARNESS CONTINUITY INSPECTION PROGRAM - Disclosed are a wire harness continuity inspection method and a wire harness continuity inspection program capable of shortening the time required for a success/failure determination step. A first specification regarded as necessary for a first partitioned area A and a second specification regarded as necessary for a second partitioned area B are compared, the presence/absence of a shared specification is determined, and when there is at least one shared specification, region-based connector/wiring information described regarding any first wire harness arrangeable in the first partitioned area A and any second wire harness arrangeable in the second partitioned area B is created for the combination of the first wire harness and the second wire harness only. | 01-24-2013 |
20130030729 | MOTHERBOARD ALARM SYSTEM TEST CIRCUIT - A motherboard alarm system test circuit includes an infrared emitter, a memory, and a circuit board. The circuit board includes a memory slot, many edge connectors, an infrared receiver, a single chip computer, and a switch circuit. The memory slot includes many spaced metal sheets. One end of each metal sheet is electrically connected to one of the first golden fingers of the memory. Each edge connector is electrically connected to the other end of each metal sheet. The second golden fingers of the circuit board are electrically connected to the memory slot. The signal chip computer includes an input pin electrically connected to the infrared receiver. The switch circuit is electrically connected to the signal chip computer. The switch circuit controls an electrical connection between the plurality of metal sheets and the plurality of first golden fingers of the memory. | 01-31-2013 |
20130030730 | NON-INVASIVE LEAKAGE POWER DEVICE CHARACTERIZATION OF INTEGRATED CIRCUITS USING DEVICE GROUPING AND COMPRESSIVE SENSING - Techniques are generally described for non-invasive, post-silicon characterization of—leakage power for devices of an integrated circuit (IC). A system of sparse leakage power equations may be developed for the devices (e.g. gates) within the IC to be solved using compressive sensing (CS) techniques. Input Vectors (IV) may be applied at input terminal of the IC, and power of the IC may be measured. The measurements may be used in conjunction with the set of sparse equations to determine leakage power values for individual devices, not directly accessible. Pre-processing and post-processing techniques may be employed to make the system of equations more sparse and further improve the efficiency of applying CS techniques to solve the equations. Example processing may include variable splitting, device grouping, IV and equation selection, measurement under elevated IC temperature, and bootstrapping. Other aspects may be disclosed and claimed. | 01-31-2013 |
20130035881 | METHOD AND SYSTEM FOR CHARACTERIZING EFFICIENCY IMPACT OF INTERRUPTION DEFECTS IN PHOTOVOLTAIC CELLS - A system for characterizing interruption defect induced efficiency loss in a photovoltaic cell includes an inspection system configured to acquire inspection data from a photovoltaic cell, a control system configured to: receive the inspection data acquired from the photovoltaic cell, identify one or more interruption defects in one or more fingers of an electrode of the one photovoltaic cell utilizing the inspection data, determine a spatial parameter associated with at least one of the identified interruption defects and one or more floating finger portions of the one or more fingers created by two or more identified interruption defects, determine an interruption-defect-induced efficiency loss of the photovoltaic cell based on the determined spatial parameter associated with the at least one of the identified interruption defects and the floating finger portions of the one or more fingers created by two or more identified interruption defects. | 02-07-2013 |
20130035882 | METHOD AND APPARATUS FOR DIFFERENTIAL PROTECTION OF AN ELECTRIC CONNECTION - A method and apparatus are provided for differential protection of a three phase electric connection of an electric system. The apparatus includes means for determining a value of an operate quantity, which operate quantity is based on a difference between current quantities at a first point and a second point of the electric connection, and means for detecting a fault in the electric connection between the first point and the second point if the value of the operate quantity exceeds a value of a predetermined threshold quantity. The operate quantity is based on a difference of residual currents at the first point and the second point, or a quantity indicative thereof, and a coefficient indicative of an angle between a residual voltage of the electric connection and the difference of residual currents at the first point and the second point. | 02-07-2013 |
20130041603 | FUNCTIONAL MONITORING OF A SAFETY ELEMENT - A method of checking the functional capability of at least one safety element of a safety circuit of an elevator installation utilizes a first processing unit and a second processing unit for the at least one safety element. The at least one safety element is connected with a control unit by a communications network. At least one signal is provided by the first processing unit on the basis of at least one communication from the control unit. The at least one provided signal is detected by the second processing unit connected with the first processing unit and is communicated to the control unit by way of the communications network. The at least one communicated signal is checked for the validity thereof by the control unit. | 02-14-2013 |
20130041604 | METHOD OF PREDICTING TRANSIENT STABILITY OF A SYNCHRONOUS GENERATOR AND ASSOCIATED DEVICE - A method of predicting transient stability of a synchronous generator and a device for implementing such a method, the device comprising measurement means and calculation means for calculating an information which indicates, before it actually happens, whether the generator slip will be greater than zero or not at the critical phase angle. | 02-14-2013 |
20130046490 | TWO-WIRE PROCESS CONTROL LOOP CURRENT DIAGNOSTICS - A process variable transmitter controls a signal on a communication loop. A diagnostic component on the transmitter compares an expected signal level on the communication loop with an actual value to detect on-scale errors. | 02-21-2013 |
20130054160 | SYSTEMS AND METHODS FOR MONITORING THE HEALTH OF AN ELECTRICAL SYSTEM - The subject matter herein generally relates to electrical generators and motors, and more specifically, to electrical turbo-generators. In an embodiment, an electrical system includes a circuit. The circuit includes one or more rotating power delivery assemblies comprising a plurality of sliding surfaces that deliver power to a rotating load. The circuit also includes one or more radio frequency current transformers (RFCTs) that measure radio frequency (RF) signals corresponding to arcing events in the one or more rotating power delivery assemblies. The electrical system also includes a processor that receives the measurements from the one or more RFCTs and determines a health value of the circuit based, at least in part, on the received measurements. | 02-28-2013 |
20130073229 | Detection of High Voltage Electrolysis of Coolant in a Battery Pack - An apparatus and method providing for detecting and responding to high voltage electrolysis within an electric vehicle battery enclosure to limit possible excessive thermal condition of the individual battery cells and modules. The present invention includes embodiments directed towards detection algorithms and apparatus for promoting the use of voltage, current, humidity, temperature, and pressure sensors for the purpose of detecting high voltage electrolysis. Additionally, the present invention includes response processes and structures to address high-voltage electrolysis. | 03-21-2013 |
20130080088 | SEMICONDUCTOR CHIP TESTING METHOD AND SEMICONDUCTOR CHIP TESTING DEVICE - A semiconductor chip testing method includes: (a) testing the electrical characteristics of each of semiconductor chips in the form of wafers or in the form of chips formed on a predetermined number of semiconductor wafers having certain relationship, and determining if the semiconductor chip is non-defective or defective; (b) calculating a percentage of semiconductor chips determined to be defective as a fraction defective for each of wafer addresses based on determination results about the semiconductor chips on the predetermined number of semiconductor wafers, the wafer addresses indicating the respective positions of the semiconductor chips on the semiconductor wafers; and (c) changing a determination result about a semiconductor chip determined to be non-defective to defective, the semiconductor chip being at a wafer address determined to have a fraction defective at a threshold or higher than the threshold. | 03-28-2013 |
20130080089 | SYSTEM FOR AND METHOD OF DETECTING A NON-FUNCTIONAL BATTERY BACK-UP UNIT (BBU) OF AN OPTICAL NETWORK TERMINAL - A system for and method of for detecting a non-functional battery back-up unit (BBU) of an optical network terminal is presented. The system and method may include receiving power outage data associated with a plurality of customer sites, receiving, from each of the plurality of customer sites, discharge time data associated with a battery via a network, calculating a mean discharge time based on the discharge time data, comparing the discharge time data associated with each battery to the mean discharge time, determining that each battery that is associated with discharge time data that indicates a discharge time value that is less than the mean discharge time is faulty, and outputting a data signal that indicates that a battery is faulty. | 03-28-2013 |
20130080090 | AGING-BASED USAGE METERING OF COMPONENTS - Embodiments for aging-based usage metering of components of an IC are described herein. In various embodiments, the IC may include various components and an aging-based usage metering circuit for metering usage of the components. The components may include respective associated usage vectors that are different from one another, whereas the usage metering circuit may include circuit elements coupled to each other, forming different processing paths for processing the different usage vectors. Additionally, the components may be configured to respectively transmit their different associated usage vectors to the usage metering circuit whenever the respectively components are used. And the usage metering circuit may be configured to process the usage vectors. Further, the circuit elements of the usage metering circuit may age over time as a result of the processing, enabling usage of the components be determined based on their aging. Other embodiments may be described or claimed. | 03-28-2013 |
20130085691 | METHOD FOR TESTING HANDHELD ELECTRONIC DEVICE - A method for testing a handheld electronic device installed with an open operating platform including a first testing instruction and a second testing instruction includes sending the first testing instruction to the handheld electronic device to switch the handheld electronic device from a high power consumption state to a low power consumption state; sending the second testing instruction to the handheld electronic device to switch the handheld electronic device from the low power consumption state to the high power consumption state; and executing the first testing instruction and the second testing instruction repeatedly in a loop based on a predetermined test duration and test count, such that tests performed on the handheld electronic device are precise and stable. | 04-04-2013 |
20130096853 | SYSTEMS AND METHODS FOR MONITORING ELECTRICAL CONTACTS - Systems and methods for monitoring electrical contacts are provided. One method includes calculating an impedance of an electrical contact based on an electrical signal applied to the electrical contact and a measured electrical signal after passing through the electrical contact. The method also includes determining a condition of the electrical contact using the calculated impedance. | 04-18-2013 |
20130103327 | Fault detection device for wind power generator and means of judgment thereof - A fault detection device and its means of judgment for wind power generator, which mainly has a first detection device installed at the joint between the vane of wind power generator and the connection part of the pivot, meanwhile, the first detection device is to detect a vane pitch angle (βm). In addition, the pivot is installed with a second detection device for detection of a measured rotational speed of vane (Ωrotor-m), meanwhile, on the generator of the wind power generator, it is installed with a third detection device so as to detect a measured power value (Pm) and measured three phase mean voltage value (Vac-m), in addition, on the wind direction and wind speed transmitter, it is installed with a fourth detection device so as to detect a measured wind speed value (Um). | 04-25-2013 |
20130103328 | SCREENING DEVICE FOR SEMICONDUCTOR DEVICES, SCREENING METHOD FOR SEMICONDUCTOR DEVICES AND PROGRAM THEREOF - A screening device for semiconductor devices includes a data divider to generate measurement value subsets by sub-grouping a measurement value set including measurement results relating to characteristics of the semiconductor device based on a specific standard; a first evaluation value calculator to calculate a first evaluation value that is an evaluation standard for measurement results included in the plural respective measurement value subsets; a data converter to convert measurement results contained in the plural respective measurement value subsets based on the first evaluation value; a second evaluation value calculator to calculate a second evaluation value that is an evaluation standard for measurement results after conversion by the data converter; and a decision unit to decide if the semiconductor device under measurement is a pass or fail based on the second evaluation value. | 04-25-2013 |
20130110422 | FAULT DETECTOR FOR OPERATING PROCESS OF ELECTRIC ARC FURNACE AND METHOD THEREOF | 05-02-2013 |
20130116944 | METHOD AND DEVICE TO IDENTIFY, RECORD AND STORE TRAVELING WAVE HEADS IN ELECTRIC POWER SYSTEMS - METHOD AND DEVICE TO IDENTIFY, RECORD AND STORE TRAVELING WAVE HEADS IN ELECTRIC POWER SYSTEMS consisting in sending a trigger ( | 05-09-2013 |
20130116945 | CIRCUITS AND METHODS FOR FAULT TESTING - An integrated circuit sensor includes circuitry and methods for generating a high speed delay fault test clock signal. A trimmable oscillator generates a master clock signal for use by an output protocol processor to provide the sensor output signal. A fault test clock signal generator is responsive to the master clock signal and to a test trigger signal for generating the test clock signal having a launch pulse and a capture pulse, each having edges substantially coincident with like edges of pulses of the master clock signal and a spacing between launch and capture pulses established by the trimmable master clock signal. | 05-09-2013 |
20130116946 | METHODS AND APPARATUS FOR DETERMINING POWER DISTRIBUTION SYSTEM TOPOLOGY USING DISTURBANCE DETECTION - A disturbance, for example, a frequency variation, is generated in at least a portion of the power distribution network. The disturbance may be generated, for example, by an uninterruptible power supply (UPS) or some other component of the power distribution network, such as a switch. At least one node of the network experiencing the disturbance is identified and a topology of the power distribution network is determined responsive to identifying the at least one node. The at least one node may be identified by detecting a voltage-related artifact corresponding to the disturbance. A phase-locked loop (PLL)—based circuit may be used for fast artifact detection. Groups of devices in the network may be identified from the artifacts, and combinatorial optimization techniques may be used to determine connectivity within such groups. | 05-09-2013 |
20130116947 | Method and System for Detecting Unbalance in Power Grids - A method for detecting unbalance in a 3-phase voltage signal is disclosed. The method includes determining an unbalance indicator as a value of a square of an amplitude of a positive sequence of the voltage signal; and comparing the unbalance indicator with a threshold to determine unbalance of the voltage signal. | 05-09-2013 |
20130116948 | SEMICONDUCTOR SYSTEM INCLUDING DATA OUTPUT CIRCUIT - A semiconductor system includes a first semiconductor chip configured to perform a parallel test according to a first single chip parallel test signal and a multi-chip parallel test signal, and output first data that indicates if the first semiconductor chip passed or failed. A second semiconductor chip is also configured to perform the parallel test according to a second single chip parallel test signal and the multi-chip parallel test signal, and output second data that indicates if the first semiconductor chip passed or failed. | 05-09-2013 |
20130116949 | TESTING DEVICE FOR TESTING PRINTED CIRCUIT BOARD - A testing device for testing a PCB is provided. The testing device includes an oscillograph, a number of switches, a control unit, and a processing unit. The oscillograph includes a first input channel. Each switch includes a first path terminal connected to one of the test points, a second path terminal connected to the first input channel, and a controlled terminal The control unit outputs a control signal to the controlled terminal of each of the switches to turn on and turn off the switches in sequence, within a period set by, and including, all the switches, then a periodic signal including signals at all the test points within of one single period is transmitted to the first input channel. The processing unit obtains the control signals and the overall periodic signal, and matches the signals at the test points from the periodic signal according to the control signals. | 05-09-2013 |
20130124116 | SYSTEMS AND METHODS FOR PREDICTING THE LIFETIME OF AN ELECTROMECHANICAL DEVICE - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for estimating the lifetime or remaining lifetime of an electromechanical systems (EMS) device. In one aspect, a parameter of the device, such as a release or actuation voltage, is measured. The parameter measurement is used in conjunction with a model of the aging of the device according to the measured parameter to determine an estimated remaining lifetime of the device. | 05-16-2013 |
20130124117 | ELECTRIC VEHICLE AND METHOD OF DIAGNOSING CURRENT SENSOR - An electric vehicle includes: a battery that stores electric power to be supplied to a traction motor; a current sensor that measures a charging current and a discharging current flowing to and from the battery; and a controller configured to monitor a measurement value of the current sensor during a period of time, during which a main switch of the electric vehicle is at an ON position and a power generation motor is at a stop, and configured to, when the measurement value indicates that the charging current is flowing to the battery, output, to at least one of a display unit and a memory, data indicating that the charging current is flowing. | 05-16-2013 |
20130124118 | ELECTRONIC APPARATUS, MEASURING METHOD, AND MONITORING APPARATUS - According to an embodiment, an electronic apparatus includes a first member serving as a circuit board member; a second member serving as a circuit board member or a semiconductor device; a first electrode formed on the first member; a second electrode formed on a region, of the first member, around a region where the first electrode is formed; and a third electrode formed on the second member. The electronic apparatus also includes a electrical joint configured to bond the first electrode, the second electrode, and the third electrode; and a measuring module configured to measure an electrical characteristic value of a connection path including at least one of the first electrode and the second electrode. | 05-16-2013 |
20130132007 | EMBEDDED TRANSIENT SCANNING SYSTEM APPARATUS AND METHODOLOGY - Systems and methods for scanning and characterizing an integrated circuit for transient events. Embedded apparatus can detect transient events that may be incident on the integrated circuit, and moreover, identify particular nodes of the integrated circuit that are affected by the transient event. Additionally, the integrated circuit can be characterized by applying known transient pulses of varying severity to selected nodes of the integrated circuit, detecting the severity levels at which the selected nodes can fail, and storing indications pertaining to pulse severity at which selected nodes can fail. Moreover, based on the characterization, targeted protection mechanisms can be provided for nodes that are characterized as being susceptible. | 05-23-2013 |
20130138365 | UNINTERRUPTIBLE POWER SUPPLY TESTING - A system includes an uninterruptible power supply (UPS), one or more power supplies, and a processing device. The processing device to execute instructions which cause the processing device to determine a total output current of the one or more power supplies, enable the UPS, determine an output current of at least the UPS, determine a current sharing percentage for at least the UPS, and compare the current sharing percentage for the UPS with an expected current sharing percentage range. | 05-30-2013 |
20130138366 | ELECTRIC DISTRIBUTION SYSTEM PROTECTION - A system for distributing electrical current to a plurality of loads includes a first sensor coupled to an input of a protection zone for measuring a first current entering the protection zone, wherein the protection zone includes at least a portion of an electrical distribution feeder. The system also includes a second sensor coupled to an output of the protection zone for measuring a second current exiting the protection zone, and a processor coupled to the first sensor and to the second sensor. The processor is programmed to receive measurements representative of the first current and the second current, and calculate a reactive current differential of the protection zone based on the first current and the second current. The processor is also programmed to compare the reactive current differential with a fault threshold, and generate an error notification if the reactive current differential is greater than the fault threshold. | 05-30-2013 |
20130144544 | SYSTEMS AND METHODS FOR TESTING CIRCUITRY PROGRAMMABILITY - Systems and methods in which circuitry programmability is tested through observing a change in voltage on a circuit node that is affected by the programmability under test. For example, one or more particular circuit node may be identified at which some measurable change in voltage occurs upon a change in state of a programmable circuit under test (PCUT). Thus, by detecting a change in voltage at such a circuit node in association with a programmable state change, embodiments may determine that respective circuit programmability is functional. Test circuitry of embodiments provides for circuitry programmability testing, through observing a change in voltage on a circuit node that is affected by the programmability under test, suitable for testing digital programmability which is deeply embedded in analog circuitry. | 06-06-2013 |
20130151175 | ARCHITECTURE AND METHOD TO DETERMINE LEAKAGE IMPEDANCE AND LEAKAGE VOLTAGE NODE - A circuit, system, machine-readable storage medium and method for detecting the leakage impedance in a voltage source is described. The method for identifying a presence of a leakage path in a multi-cell floating voltage source may include supplying a current to a node of the floating voltage source and sampling the voltage of the floating voltage source using a pair of amplifiers connecting in inverting configurations. The method may include sampling a reference ground potential using a reference amplifier connected in an inverting configuration. Each of the amplifiers may output an output signal. The method may include adjusting the current supplied to the node of the floating voltage source and resampling the voltage of the floating voltage source and the reference ground potential. The value of the leakage impedance may be calculated using the sampled and resampled values. The measurements may be performed independent of the battery voltage. | 06-13-2013 |
20130151176 | SEMICONDUCTOR APPARATUS AND CHIP SELECTING METHOD THEREOF - A semiconductor apparatus includes an individual chip designating code setting block configured to generate a plurality of individual chip designating code of different values; an individual chip activation block configured to enable an individual chip activation signal among a plurality of individual chip activation signals, which corresponds to individual chip designating code, when the individual chip designating code matches the individual chip control code; and a control block configured to set the individual chip control code or output chip selection address as the individual chip control code in response to chip selection fuse signals and test fuse signals. | 06-13-2013 |
20130158901 | Method and System for Detecting Unbalance in Power Grids - A method for detecting unbalance in a 3-phase voltage signal includes sampling the signal over an observation widow to determine a set of observations, and detecting the unbalance of the signal based on a probability density function (pdf) of the set of observations. | 06-20-2013 |
20130158902 | MULTI-CHANNEL LEAKAGE CURRENT MONITORING SYSTEM - Disclosed is a multi-channel leakage current monitoring system configured to monitor leakage currents transmitted to loads from a plurality of molded case circuit breakers (MCCBs), and to transmit the leakage currents to a smart meter. The system comprises: a plurality of current transformers configured to measure power information data about loads connected to secondary side power lines of the MCCBs; and a multi-channel measuring unit (MCMU) configured to detect a leakage current by analyzing the power information data received from the current transformers. Under such a configuration, the size of the system can be reduced, and the number of communication lines can be minimized. | 06-20-2013 |
20130158903 | Method and System for Detecting Transients in Power Grids - Conditions in a power grid are detected by sampling a voltage in the grid. A normal condition hypothesis is modeled as a sinusoid, and a transient condition hypothesis is modeled as a sum of damped sinusoids. The samples are used to construct probability density function. A likelihood ratio based on the pdf and the hypotheses is compared to a threshold to determine whether the condition is normal or transient. | 06-20-2013 |
20130158904 | APPARATUS AND METHOD FOR ASSESSING THE INTEGRITY OF ANALOG-DIGITAL CONVERTER - An apparatus for determining integrity of an electronic device in a vehicle is provided. The apparatus comprises a controller operably coupled to a high voltage measuring circuit and to an analog-to-digital converter (ADC). The high voltage measuring circuit receives a high voltage signal and includes at least one stressed resistor for reducing the high voltage signal into a suitable voltage signal. The ADC performs a measurement with the suitable voltage that is indicative of the high voltage signal in a normal operation mode. The controller is configured to apply a calibrated voltage to the at least one stressed resistor in a calibration mode. The controller is further configured to calculate a resistance value of the at least one stressed resistor based on applying the calibrated voltage to the at least one stressed resistor to determine if the at least one stressed resistor is in a stressed state. | 06-20-2013 |
20130158905 | TEST APPARATUS AND TEST METHOD - A synchronization pattern generating unit generates a synchronization pattern required for a clock recovery unit which has been built into a DUT to maintain a link with an external circuit. A gate signal generating unit generates a gate signal which is asserted in a period in which a vector pattern is to be supplied to the DUT. In a first mode, a pattern selecting unit is configured such that it outputs the vector pattern during a period in which the gate signal is asserted and outputs a fixed output level during a period in which the gate signal is negated. In a second mode, the pattern selecting unit is configured such that it outputs the vector pattern during a period in which the gate signal is asserted and outputs the synchronization pattern during a period in which the gate signal is negated. | 06-20-2013 |
20130173183 | COLLECTOR MONITORING SYSTEM - A collector monitoring system is disclosed. In one embodiment, the collector monitoring system includes: a sensor connected to an interior surface of a dynamoelectric machine housing, the sensor for sensing a condition of a collector during operation of a dynamoelectric machine; and a diagnostic system operably connected to the sensor, the diagnostic system configured to: obtain data about the condition of the collector from the sensor; compare the data about the condition of the collector with a predetermined condition threshold; and provide an indicator of a collector fault in response to the data about the condition of the collector exceeding the predetermined condition threshold. | 07-04-2013 |
20130173184 | REMOTE MONITORING SYSTEM - A remote monitoring system provides a real-time monitoring of conditions of an apparatus, such as a power line. The remote monitoring system includes an apparatus that generates electrical signals, a remote monitoring module that is remote from the apparatus, and a transmission module. The transmission module is provided adjacent to the apparatus and transmits data that correspond to the electrical signals via a cellular network to the remote monitoring system. The remote monitoring module receives the signal and determines a condition of the apparatus based on the received electrical signal. | 07-04-2013 |
20130173185 | Systems and methods providing predictive analyses of events relating to emergency power supply systems - Aspects of the present disclosure generally relate to systems and methods for managing and monitoring a plurality of emergency power supply systems (EPSS's) at a facility via an emergency power management system (EPMS). The EPMS generally comprises EPSS equipment, a management computer system for managing, monitoring, and testing the operational characteristics of the EPSS equipment, and a plurality of interface modules for providing unified communication capabilities between the management computer system and the EPSS equipment. Additional aspects relate to methods for easily and efficiently creating and installing an EPMS at a facility. Further aspects are directed to providing predictive analyses related to the EPSS equipment. Also, aspects of the present disclosure relate to normalizing EPSS equipment information across varying vendors, makes, and models of equipment so as to provide a unified view of all equipment across a given facility. | 07-04-2013 |
20130173186 | SELF-DIAGNOSTIC APPARATUS AND METHOD FOR ELECTRIC DEVICE - A diagnostic method and apparatus for self-diagnosis a load side of an electric device to detect the occurrence of the abnormal electricity usage at the load using a simple apparatus based on a current sensor includes checking rated power consumption of a load, measuring power consumption of the load in operation, calculating a change in the power consumption by comparing the rated power consumption of the load with the power consumption of the load in operation, and determining that an abnormal power consumption occurs at the load when the change in the power consumption is outside a predetermined range. | 07-04-2013 |
20130173187 | METHOD AND DEVICE FOR AUTOMATICALLY MEASURING PHYSICAL CHARACTERISTICS OF A CABLE, IN PARTICULAR THE PROPAGATION VELOCITY - A method for automatically measuring physical characteristics of a cable, comprises at least the following steps: positioning on said cable of means for creating an artificial singularity; the injection, at a point of said cable, of an electrical test signal; acquisition of said signal reflected on the singularities that said cable includes so as to produce a first reflectogram; measurement, on said reflectogram, of the temporal position Δt of the peak of the signal derived from its reflection on said artificial singularity; determination of the propagation velocity v | 07-04-2013 |
20130179099 | SYSTEM AND METHOD FOR ASSESSING FAULTY POWER-LINE INSULATOR STRINGS - A system for the detection of discharges over high voltage power-line insulator strings of an electrical grid. A sensor unit is deployed on a non conducting cable of the grid. The sensor feeds an array of band cut-off filters receiving each signals from said at least one sensor unit. An analogue processor is associated with each of the band cut-off filters associated each with a current peak detector. An ADC unit is associated with each one of said analogue processors. In addition a digital processor is provided for calculating data received from each one of the ADCs and one radio transmitter unit sends data to a gateway of a network. A digital processor is adapted to send data processed based on the output of the ADCs, to the radio transmitter for conveying the data to processor associated with a WAN. | 07-11-2013 |
20130185006 | NETWORK TOPOLOGY - A network analyzer device, including a control unit configured to determine network topology information related to impedance mismatches in a voltage distribution network on the basis of an evaluation of measured signals received from the voltage distribution network in response to probe signals supplied to the voltage distribution network and/or phase or running time information about noise signal components generated by appliances connected to the voltage distribution network and received by the network analyzer via different receiving paths. The network analyzer device outputs network information related to impedance mismatches in the voltage distribution network, wherein the output network information contains information about a total number of the impedance mismatches, wiring lengths between impedance mismatches, and characteristics of the impedance mismatches. | 07-18-2013 |
20130191047 | ON-CHIP POLY-TO-CONTACT PROCESS MONITORING AND RELIABILITY EVALUATION SYSTEM AND METHOD OF USE - An on-chip poly-to-contact process monitoring and reliability evaluation system and method of use are provided. A method includes determining a breakdown electrical field of each of one or more shallow trench isolation (STI) measurement structures corresponding to respective one or more original semiconductor structures. The method further includes determining a breakdown voltage of each of one or more substrate measurement structures corresponding to the respective one or more original semiconductor structures. The method further includes determining a space between a gate and a contact of each of the one or more original semiconductor structures based on the determined breakdown electrical field and the determined breakdown voltage. | 07-25-2013 |
20130191048 | METHOD AND DEVICE FOR ESTIMATING DAMAGE TO A MAGNETIC TUNNEL JUNCTION (MTJ) ELEMENT - A method of estimating damage to a magnetic tunnel junction (MTJ) element that includes providing an MTJ element having a magnetic barrier layer, the magnetic barrier layer having a periphery, a cross-sectional area and a thickness and comprising an inner region of undamaged magnetic barrier material and an outer region of damaged magnetic barrier material between the inner region and the periphery, determining a first value indicative of an electrical characteristic of the MTJ element, determining a second value indicative of the electrical characteristic that the MTJ element would have had if the outer region of damaged magnetic barrier material were not present and if the inner region of undamaged magnetic barrier material extended to the periphery, and calculating a value indicative of the size of the outer region of damaged magnetic barrier material from the first value and the second value. Also a computer configured to perform the method. | 07-25-2013 |
20130191049 | APPARATUS AND METHOD FOR MONITORING AN ELECTRIC POWER TRANSMISSION SYSTEM THROUGH PARTIAL DISCHARGES ANALYSIS - A method for monitoring partial discharges in an electric power transmission system includes the steps of: detecting electric pulses from a component of the electric power transmission system, repeating a battery of different tests adapted to provide each a result indicative of partial discharge activity, the tests being continuously performed in succession one after the other in a preset period of time, each including a set of operations of acquisition and evaluations of the detected electrical pulses, and differing each other for a plurality of different combinations of values taken by test parameters used for executing the acquisition and evaluation operations; analyzing the results obtained with time by the batteries of tests executed at different execution times in the present period of time; and generating an alarm depending on the outcome of the analysis step. | 07-25-2013 |
20130204551 | APPARATUS FOR USE IN ESTIMATING A FAULT LEVEL IN A NETWORK PROVIDING AN ELECTRICAL POWER SUPPLY TO CONSUMERS - Apparatus ( | 08-08-2013 |
20130204552 | METHOD AND APPARATUS FOR DETECTING DEVICE ANOMALY - A method and an apparatus for detecting device anomaly are provided. The apparatus including a database configured to store a plurality of electric power features; a measurement module configured to measure electric power of a device to generate electric power information; a judgment module connected to the database and the measurement module, configured to judge whether the device is abnormal based on the plurality of electric power features and the electric power information; and a detection module connected to the judgment module, configured to detect operation states of a plurality of elements in the device to generate a plurality of state signals when the judgment module judges that the device is abnormal; wherein, the judgment module further judges whether each element of the plurality of elements is abnormal based on the plurality of state signals, the electric power information, and the plurality of electric power features. | 08-08-2013 |
20130204553 | SYSTEM AND METHOD FOR DETECTING INTEGRATED CIRCUIT ANOMALIES - Circuitry, systems and methods for testing integrated circuits for the presence of anomalies. Techniques include applying a plurality of inputs to an integrated circuit under test to obtain a first plurality of measurements at least partially characterizing power leakage in the integrated circuit under test, encode the first plurality of measurements, by computing a plurality of random linear combinations of measurements in the first plurality of measurements, to obtain a second plurality of encoded measurements determining whether the integrated circuit under test contains at least one anomaly based, at least in part, on the second plurality of encoded measurements. | 08-08-2013 |
20130204554 | SYSTEMS, METHODS, AND DEVICES FOR MONITORING A CAPACITOR BANK - Systems, methods, and devices for monitoring one or more capacitor banks are presented herein. One concept of the present disclosure is directed to a method of monitoring at least one capacitor bank having a plurality of steps. The method includes: receiving measurements indicative of voltages and/or currents on electrical lines coupled to the steps of the capacitor bank by corresponding contactors; receiving information indicative of the respective statuses of the contactors; timestamping the measurements and contactor status information; storing the timestamped measurements with corresponding timestamped contactor status information; determining a rate of change of a parameter indicative of or derived from at least the measurements associated with at least one of the steps in the capacitor bank; comparing the determined rate of change with a baseline rate of change to produce a deviation; determining if the deviation satisfies a criterion; and, if so, indicating the deviation satisfied the criterion. | 08-08-2013 |
20130211749 | EMBEDDED PHOTON EMISSION CALIBRATION (EPEC) - A semiconductor device structure is embedded within a semiconductor chip that calibrates a photon-emission luminosity scale by running multiple known currents through the device. The method comprises embedding at least one photon emission device in an integrated circuit having at least one functional device. A control current is applied to the at least one photon emission device. The photon emission intensity produced by the at least one photon emission device is captured. The current density of the at least one photon emission device is calculated. A test current is applied to the at least one functional device. The photon emission intensity produced by the at least one functional device is captured. The current density of the at least one functional device is estimated based on a comparison with the calculated current density of the at least one photon emission device. | 08-15-2013 |
20130218491 | FAULT IDENTIFICATION TECHNIQUES FOR HIGH RESISTANCE GROUNDED SYSTEMS - The present techniques include methods and systems for detecting a high resistive ground fault condition in an HRG system. Embodiments include systems and methods of measuring drive voltages and detecting voltage changes in the drive once the drive is in operation, particularly for drives operating at relatively low voltages and frequencies. In some embodiments, an integrator is utilized to detect peaks in the measured voltage changes. Relatively small ground currents are also measured to determine HRG faults. Moreover, in some embodiments, the detection of an HRG fault for one of several motor drives provide indication for the particular motor drive in fault. | 08-22-2013 |
20130218492 | METHOD AND DEVICE FOR MEASURING CHANGES OVER TIME OF THE ELECTRICAL PERFORMANCE OF AN FDSOI TRANSISTOR - A method for measuring the changes of the electrical performance of an FDSOI transistor between a first and a second state of the transistor after an operating period t | 08-22-2013 |
20130226478 | COMPUTING DEVICE AND METHOD FOR ANALYZING ACQUISITION VALUES - In a method for analyzing acquisition values of an electronic device using a computing device, the computing device receives an acquisition value of the electronic device acquired by a data acquisition device. If the acquisition value is discrete data and the acquisition value is different from a previous acquisition value of the electronic device, the acquisition value is stored into a storage system. If the acquisition value is the continuous data and a first state corresponding to the acquisition value is different from a second state corresponding to a previous acquisition value of the electronic device, the acquisition value is stored into the storage system. | 08-29-2013 |
20130226479 | Arc Fault Detection - The present disclosure provides systems and methods for detecting arc faults. For some embodiments, arc faults are detected from waveforms that are acquired and processed, preferably using an Average Magnitude Difference Function (AMDF). The characteristics of the waveform provide an indication of whether or not an arcing fault occurred. | 08-29-2013 |
20130226480 | METHOD FOR ANALYSING PHOTOVOLTAIC LAYER SYSTEMS USING THERMOGRAPHY - A method for the evaluative analysis of a photovoltaic layer system is described. The method applies to a semiconductor layer forming a pn junction: an electric current is generated in the layer system; a spatially resolved thermal image of the surface of the layer system is generated; an intensity distribution of the thermal radiation relative to the respective number of pixels with the same intensity value is determined; an intensity mean/median from the intensity distribution is determined; an intensity interval based on a specifiable measure for a scattering of the intensity distribution is determined; a characteristic number is determined; and the characteristic number or a calculation value based thereon is compared with a specifiable reference characteristic number. | 08-29-2013 |
20130238262 | MEASUREMENT APPARATUS, MEASUREMENT METHOD, AND PROGRAM - A measurement apparatus comprising an IQ error measuring section that measures a frequency characteristic of an IQ error of a device under measurement; and an error amount calculating section that calculates EVM based on a constellation error, at each of a plurality of frequencies, between an ideal signal to be output in response to input of a predetermined signal into a model of the device under measurement that does not include an IQ error and a prediction signal that is to be output in response to the input of the predetermined signal into a model of the device under measurement that includes the IQ error measured by the IQ error measuring section, wherein the error amount calculating section corrects a signal component at each of the frequencies in the prediction signal according to a channel characteristic, and calculates the constellation error. | 09-12-2013 |
20130238263 | METHODS AND SYSTEM FOR ANALYSIS AND MANAGEMENT OF PARAMETRIC YIELD - Impact on parametric performance of physical design choices for transistors is scored for on-current and off-current of the transistors. The impact of the design parameters are incorporated into parameters that measure predicted shift in mean on-current and mean off-current and parameters that measure predicted increase in deviations in the distribution of on-current and the off-current. Statistics may be taken at a cell level, a block level, or a chip level to optimize a chip design in a design phase, or to predict changes in parametric yield during manufacturing or after a depressed parametric yield is observed. Further, parametric yield and current level may be predicted region by region and compared with observed thermal emission to pinpoint any anomaly region in a chip to facilitate detection and correction in any mistakes in chip design. | 09-12-2013 |
20130245969 | METHOD TO DETECT WAFER ARCING IN SEMICONDUCTOR MANUFACTURING EQUIPMENT - Methods and systems for accurate arc detection in semiconductor manufacturing tools are disclosed. Such methods and systems provide real-time arc detection and near real-time notification for corrective actions during a semiconductor manufacturing process. Such methods and systems utilize data with high sample rate and wavelet analysis to provide for more accurate arc detection, which leads to more effective and cost efficient semiconductor manufacturing operations. | 09-19-2013 |
20130245970 | Apparatus and Method for Detecting Battery Abnormality and Cause Thereof - Methods and apparatus for detecting abnormality of a battery pack are disclosed. The battery pack includes multiple battery cells coupled in series via at least one connecting wire. A first voltage drop between a positive electrode and a negative electrode of the battery pack is detected. A first set of voltage drops between a positive electrode and a negative electrode of each battery cell in the battery pack is also detected. A total voltage drop across the at least one connecting wire in the battery pack is calculated based on an absolute difference between the first voltage drop and a sum of the first set of voltage drops. Whether the battery pack is abnormal is determined by assessing the total voltage drop across the at least one connecting wire with respect to a predetermined threshold. | 09-19-2013 |
20130253859 | SYSTEMS AND METHODS FOR SIGNAL SELECTION AND FAULT DETECTION - A signal selection and fault detection system is provided. The system includes four input equalization circuits each configured to receive an input signal from an associated sensor, wherein the input signal is indicative of a parameter measured by the associated sensor, and output an equalized signal based on the received input signal. The system further includes a five-input output selection circuit coupled to the four input equalization circuits, the five-input output selection circuit configured to receive an equalized signal from each of the four input equalization circuits, receive a previous frame output signal, and select an output signal from the four equalized signals and the previous frame output signal. | 09-26-2013 |
20130253860 | CLOCK FAILURE DETECTION APPARATUS AND METHOD, AND TIMING CONTROLLER OF LIQUID CRYSTAL DISPLAY INCLUDING THE CLOCK FAILURE DETECTION APPARATUS - Embodiments of the invention relate to a clock failure detection apparatus and method, and a timing controller of a liquid crystal display including the clock failure detection apparatus, and more particularly to a clock failure detection apparatus and method, by which a failed driving state of a liquid crystal display can be accurately and reliably detected and determined by monitoring a low voltage differential signaling (LVDS) clock using a clock of an oscillator for generating clocks of a predetermined frequency in a timing controller of the liquid crystal display when a clock failure is detected in operation of the liquid crystal display, and a timing controller including the clock failure detection apparatus. | 09-26-2013 |
20130261999 | Ring Ground Testing And Monitoring - Systems and methods for ring ground testing and monitoring are disclosed. In some embodiments, a system may include an isolation module configured to: (a) electrically couple a first portion of a ring ground network to a second portion of the ring ground network during normal operation, and to (b) electrically decouple the first portion from the second portion during operation during performance of an electrical test. The system may also include a control module coupled to the isolation module, the control module including an integrated circuit and a memory coupled to the integrated circuit. The memory may be configured to store program instructions executable by the integrated circuit to cause the control module to: instruct the isolation module to enter a test mode, execute an electrical test of the first and/or second portions, indicate a result of the electrical test, and instruct the isolation module to operate in normal mode. | 10-03-2013 |
20130262000 | DEVICES AND METHODS FOR ANALYZING SPATTER GENERATING EVENTS - A method for monitoring a spatter generating event during a welding application. The method includes capturing data that corresponds to a welding current of the welding application. The method also includes detecting parameters associated with a short circuit from the captured data. The method includes analyzing the detected parameters to monitor the spatter generating event during the welding application. | 10-03-2013 |
20130268216 | INSULATION MONITORING SYSTEM FOR SECURED ELECTRIC POWER SYSTEM - The detection of an insulation fault on a network furnished with tappings by a first monitor can be followed by the location and identification of the fault by way of a locator to be placed on the tappings. To satisfy the level-two security, or SIL-2, in which the risk of occurrence of a hazard is decreased by a factor of greater than 100, second means for detecting the insulation fault are installed, to obtain a redundant item of information as regards the insulation resistance of the network, independently of the monitor but associated with a locator. | 10-10-2013 |
20130268217 | METHOD AND APPARATUS FOR DETECTING ABNORMALITY OF A CAPACITOR - The present disclosure provides a capacitor abnormality detection method and detection apparatus for accurately detecting an abnormality of an individual capacitor in a circuit in which two or more capacitors are connected in series at a low cost, and the capacitor abnormality detection apparatus includes: a measuring unit configured to measure capacitance of the circuit from both ends of the circuit; a storage unit configured to store the measured capacitance of the circuit and hours of use of the circuit during the measurement; and a determining unit configured to determine whether an abnormality is generated in at least one capacitor configuring the circuit by comparing the measured capacitance of the circuit and predetermined expected capacitance. | 10-10-2013 |
20130275063 | SYSTEM FOR DETECTING PARTIAL DISCHARGE SIGNAL AND METHOD THEREOF - A system for detecting a partial discharge signal comprises a signal detecting unit configured to detect a partial discharge signal and a noise signal of an electric power equipment; a communicating unit configured to transmit the detected partial discharge signal and noise signal through a communication network; a control unit configured to determine a level of risk of the partial discharge signal on the basis of analysis results of a partial discharge signal trend analysis algorithm and a partial discharge signal pattern analysis algorithm when the partial discharge signal transmitted through the communication network is greater than the noise signal; and a display unit configured to display the determined level of risk. | 10-17-2013 |
20130282311 | SECURED DETECTION SYSTEM - The invention relates to a detection system employed for securing a start-up of an application, said system comprising at least one first detector (D | 10-24-2013 |
20130282312 | Method And Apparatus For Transformer Diagnosis - A transformer diagnosis apparatus and method which can advantageously be used for on-line diagnosis of a transformer, and by which transformer properties may be monitored and/or determined. The diagnosis method includes collecting, for at least two different transformer loads, measurements of a current being indicative of the transformer load, as well as measurements of at least one further transformer AC signal. The method further includes deriving, from the collected measurements, at least two values of a quantity which depends on a transformer property as well as on transformer load; and determining, from the derived values, a set of coefficient(s) of a relation for how the quantity is expected to vary with transformer load. The method further includes using the determined coefficient(s) in performing a diagnosis of the transformer. | 10-24-2013 |
20130282313 | METHOD AND SYSTEM FOR MEASURING THE INTEGRITY OF A POWER CONVERTER - A method of measuring integrity of a pulse-width modulated power converter may include the steps of monitoring data associated with an input and an output of the power converter. Then correlating the data to identify degradation in performance of the power converter. A system for measuring integrity of a pulse-width modulated power converter. Current sensors may sense input and output currents of the power converter. A programmable controller may be loaded with an integrity measuring algorithm that may analyze data from the current sensors. An impending failure of the power converter may be indicated as a result of the analysis of the data. | 10-24-2013 |
20130289901 | Touch Controlled ESD Tester - The invention is an apparatus and a process, the apparatus of the invention is an intelligent system configured to test the efficacy of electrostatic discharge devices that includes a touch screen display, a microcomputer, and resident persistent non-volatile memory. Preferred embodiments use the persistent resident memory to store a plurality of test data from a plurality of tests correlated as a data base. The apparatus of the invention in certain embodiments operates as a WEB host wherein remote users may view ESD test data in various ways. The process of the invention relates to the configuration of the apparatus of the invention to at least display test data from a plurality of electrostatic dissipation device tests. The process of the invention may also include the configuration of test settings, or email notification metrics. | 10-31-2013 |
20130289902 | ANOMALY DETECTION UTILIZING ENERGY FLOW NETWORKS - A fabric of cores can be configured to spontaneously organize internal structure that mirrors the spatial-temporal causal structure of the data stream that is injected into the fabric. The mechanism is that of a self-organizing energy dissipating structure such that the energetic source is the injected signals and the energetic sink is the collisions of signals in cores. An adaptive routing architecture is further possible such that energy is preferentially allocated in the direction of maximal energy sink. By measuring the energy dissipation rate, anomalies may be detected by comparing to a set threshold. | 10-31-2013 |
20130297236 | Method for Detecting Defective Electrodes in a Micro-Electrode Matrix - The method for detecting defective electrodes in an electrode matrix comprises measurement of an electrochemical impedance spectrum for each of the electrodes. Modeling of the spectrum impedance relative to each electrode by means of an implicit non-integral frequency model is performed in the form of a parameter matrix. Principal components analysis of the matrix is performed to transform said parameter matrix into a final matrix containing decorrelated variables representing the parameter matrix in a new space. The distance between each electrode and a reference point is calculated. These calculated distances are compared with a preset threshold distance and the electrodes having a distance greater than the threshold distance are classified as being defective. | 11-07-2013 |
20130311113 | PROGNOSTICS AND LIFE ESTIMATION OF ELECTRICAL MACHINES - The method includes measuring an operating parameter comprising at least one of a phasor current and phasor voltage of an electrical machine. The method further includes determining a diagnostic parameter indicative of a fault of the electrical machine based on the measured operating parameter. The method also includes estimating end of life of the electrical machine based on the diagnostic parameter using an error minimization method. | 11-21-2013 |
20130317768 | VOLTAGE BASED METHOD FOR FAULT IDENTIFICATION IN A TRANSMISSION LINE AND APPARATUS THEREOF - The present invention provides a method for current for fault identification in a transmission line and an apparatus thereof. The method comprises the following steps: measuring the real-time values of the currents and the voltages of the other unbroken healthy phase conductors when a single-phase fault occurs; calculating the inductive voltage and the capacitive coupling voltage according to the measured currents and voltages respectively; comparing the capacitive coupling voltage with the inductive voltage multiplied by a factor, in which the multiplication result is used as a self-adjusted threshold based on the real time load condition of the transmission line; and identifying the fault type based on the maximum of the capacitive coupling voltage and the multiplication. | 11-28-2013 |
20130325372 | SEMICONDUCTOR DEVICE WITH PHYSICAL MANIPULATION DETECTOR AND CORRECTOR - A semiconductor device includes a first SSAD unit and a second SSAD unit. The first SSAD unit has at least one first transistor with a first dielectric layer between a first substrate and a first floating gate. The second SSAD unit has at least one second transistor with a second dielectric layer between a second substrate and a second floating gate. The second dielectric layer is thicker than the first dielectric layer. | 12-05-2013 |
20130325373 | Detecting Faults in Wind Turbines - A wind turbine generator fault detection method is described. The method includes acquiring current data from a wind turbine generator during operation, determining frequency demodulated signals and amplitude demodulated signals by frequency demodulating and amplitude demodulating the current data, resampling the frequency and amplitude demodulated signals corresponding to the current data, monitoring a frequency spectra of the resampled frequency and amplitude demodulated signals corresponding to the current data to identify one or more excitations in the frequency spectra. In response to identifying one or more excitations in the frequency spectra at one or more of the variable fault characteristic frequencies, the method includes generating and transmitting an alert that indicates that a wind turbine generator fault is detected. | 12-05-2013 |
20130325374 | Method and System for the Preventive Maintenance of a Magnetic Resonance Device - A method and a system for preventive maintenance of a magnetic resonance device are provided. The system includes a coil plug-in connector detection unit that detects a number of coil connections of at least one high-frequency-receive coil of the magnetic resonance device. The system also includes a transmission unit that transmits the number of detected coil connections to a central arithmetic unit. The central arithmetic unit totals up the transmitted number of coil connections. The transmission unit also transmits the number of detected coil connections to an output unit. The transmission unit outputs a maintenance order for the maintenance of the magnetic resonance device when the total sum of the number of the coil connections exceeds a predefinable threshold value. | 12-05-2013 |
20130332092 | Calibration Kits for RF Passive Devices - A method includes measuring a first calibration kit in a wafer to obtain a first performance data. The wafer includes a substrate, and a plurality of dielectric layers over the substrate. The first calibration kit includes a first passive device over the plurality of dielectric layers, wherein substantially no metal feature is disposed in the plurality of dielectric layers and overlapped by the first passive device. The method further includes measuring a second calibration kit in the wafer to obtain a second performance data. The second calibration kit includes a second passive device identical to the first device and over the plurality of dielectric layers, and dummy patterns in the plurality of dielectric layers and overlapped by the second passive device. The first performance data and the second performance data are de-embedded to determine an effect of metal patterns in the plurality of dielectric layers to overlying passive devices. | 12-12-2013 |
20130338945 | Outage Scope Analysis for Electrical Distribution Systems - Outage scope for an electrical distribution system is estimated by generating downstream outage prediction information indicating whether any service area protected by one of the terminal protective devices of the electrical distribution system likely has a power outage based on reported outage information. Upstream outage prediction information is generated which indicates whether any service area protected by one of the non-terminal protective devices of the electrical distribution system likely has a power outage based on the downstream outage prediction information. Each protective device is predicted to be in an open or closed state based on the downstream and upstream outage prediction information so that more than one open protective device can be identified when more than one fault occurs in different parts of the electrical distribution system. | 12-19-2013 |
20130338946 | Method And Arrangement For Detecting An Internal Failure In H-Bridge Connected Capacitor Bank - A method for detecting an internal failure in a capacitor bank connected in one phase or more phases respectively to a power system. The capacitor bank includes a plurality of capacitor units. Each of the capacitor units includes a plurality of capacitor elements connected in parallel and/or series. The capacitor units are further divided into two strings and a current transformer is arranged in the midpoints of the two strings so that the capacitor units are further divided into four quadrants and the internal failure(s) may occur in one or more capacitor elements or units and involves one or more capacitor quadrants. The method includes initiating an alarm and/or a trip signal when the determined total number of internal elements failures exceeds a first or a second threshold value. | 12-19-2013 |
20140012520 | PHOTOVOLTAIC STRING MONITOR - A photovoltaic string monitor that provides PV-string level monitoring to detect abnormal operating conditions. The photovoltaic string monitor includes an indicator unit for indicating normal conditions, existing abnormal conditions or past occurrence of abnormal conditions. In one embodiment, the photovoltaic string monitor includes a plurality of lights and an LCD display. | 01-09-2014 |
20140012521 | Methods for Eddy Current Data Matching - A method of analyzing historic and current eddy current test probe data is disclosed. The method takes into account that the two data sets of data may not be an exact match in acquisition technique based on factors such as probe pull speed, direction, record leg or instrument configuration. The method includes the steps of aligning a first set of eddy current data to a second set of eddy current data based on prominent features found in both data sets; converting the first set of eddy current data to a modified first set of eddy current data to match the second set of operating conditions and; comparing the modified first set and the second set to find change over time. | 01-09-2014 |
20140012522 | SYSTEMS, METHODS, AND DEVICES FOR CAPACITANCE ESTIMATION OF POWER CAPACITORS - Systems, methods, and devices are provided for estimating when preventive maintenance of power capacitors is called for. Such a system may include, for example, a voltage sensor, a current sensor, and data processing circuitry. The voltage sensor may measure a voltage difference across a phase of a power capacitor. The current sensor may measure a current across the phase of the power capacitor. The data processing circuitry to determine a first instantaneous indication of a difference between a nominal capacitance of the power capacitor and an actual value of the power capacitor based at least in part on the measured first voltage difference and first current. | 01-09-2014 |
20140012523 | PREVENTIVE DIAGNOSTIC SYSTEM FOR GIS BASED ON IEC 61850 - According to an embodiment of the present disclosure, there is provided a preventive diagnostic system for a GIS that includes a plurality of data acquisition systems (DAS's), a central communication unit (CCU), and a local server. The DAS generates an ICD file representing a content of the configuration of the DAS using a logical node designed for the preventive diagnostic system for a GIS and delivers the ICD file to the CCU, and the CCU performs a network connection so as to communicate with the DAS in compliance with IEC 61850 based on a content of the ICD file delivered from the DAS. According to the embodiment of the present disclosure, by applying IEC 61850 to the preventive diagnostic system for a GIS, smooth integration with a substation automation system and an efficient operation can be achieved. | 01-09-2014 |
20140025320 | Redundancy For Improved Stack Health Monitoring Reliability - A health monitoring system for a fuel cell stack using current fuel cell architecture to enable the electronic control unit (ECU) to continue to monitor the health of the fuel cell stack despite a component failure. The system uses an embedded measurement module (EMM) connected to a group of fuel cells in the fuel cell stack to monitor the health of that group of fuel cells. The EMM produces a pulse width modulation signal that is sent to the ECU. A total voltage value for the group of fuel cells is embedded into the calibration signal or end of frame sequence. The ECU uses an algorithm to determine a missing voltage of at least one fuel cell in the event of the component failure of that fuel cell by adding up the cumulative value for each fuel cell reporting their voltage and subtracting that value from the total voltage value found in the end of frame sequence. | 01-23-2014 |
20140032138 | APPARATUS AND METHOD FOR OUT-OF-STEP PROTECTION USING THE ANALYSIS OF TRAJECTORIES OF ELECTRICAL MEASUREMENTS IN STATE PLANE - Various embodiments are described herein for a device and method for predicting an out-of-step or transient instability condition in a power system due to a disturbance, such as a fault, where the power system comprises a power generator. The method comprises determining values for a state plane trajectory for the power generator during the disturbance based on using an internal voltage angle of the power generator or an equivalent power generator and a during fault rotor speed of the power generator or equivalent power generator as state variables, determining time scale values; determining values for a critical state plane trajectory for the power generator after clearing the fault, determining values for a state plane trajectory for the power generator after clearing the fault, determining a critical clearing angle and a critical clearing time, and predicting that the power generator will be stable or unstable by comparing the time to clear the fault with the critical clearing time. | 01-30-2014 |
20140039817 | SYSTEM AND METHOD FOR MONITORING AN ELECTRICALLY-CONNECTED SYSTEM HAVING A PERIODIC BEHAVIOR - A method for monitoring a system having an electrical connection, the connection having at least two phases and respective currents, the system having a periodic behavior, the method comprising the steps of: connecting sensors to measure respective currents of two phases of the electrical connection; transforming the measured currents to create initial current information; making an initial determination of a normal operation of the system; performing training and modeling of the system, following the initial determination of normal operation of the system, the training and modeling including further current measurements yielding modeled current information; monitoring the system, including instant current measurements to yield instant current information indicative of instant operation status of the system; and making an instant determination of operation status of the system by comparing the instant current information with the modeled current information. | 02-06-2014 |
20140052390 | APPARATUS AND METHOD FOR DETECTING ERROR AND VARIATION IN LIGHT-EMITTING DIODE LIGHTTING - Disclosed herein are an apparatus and method for sensing an error and a variation in Light-Emitting Diode (LED) lighting. In the method, a PWM signal including required light emission information is generated. Tail data including operation information is generated. A CRC value based on the tail data is also generated. A tail-CRC signal is generated by combining the tail data with the CRC value. Finally, a PWM-tail signal is generated by combining the tail-CRC signal with the PWM signal. | 02-20-2014 |
20140052391 | Fault Analysis in Electric Networks Having a Plurality of Multi-Phase Buses - Fault analysis for an electric network having a plurality of multi-phase buses is performed by computing equivalent circuits for the multi-phase buses of interest. Each equivalent circuit includes an N×N impedance matrix, N corresponding to the number of phases of the multi-phase bus for which that equivalent circuit is computed. Elements of the impedance matrices are determined based on voltages resulting from a plurality of experimental current injection vectors and a factorized pre-fault admittance matrix. The pre-fault admittance matrix represents nodal admittance of the multi-phase buses without faults. A fault current injection vector for each multi-phase bus and fault type of interest is determined based on the equivalent circuit determined for that multi-phase bus. A fault voltage vector for each multi-phase bus and fault type of interest is determined based on the factorized pre-fault admittance matrix and the fault current injection vector determined for that multi-phase bus and fault type. | 02-20-2014 |
20140052392 | TECHNIQUE FOR MONITORING STRUCTURAL HEALTH OF A SOLDER JOINT IN NO-LEADS PACKAGES - A printed circuit board (PCB) and a system utilizing the same is presented for use in monitoring a solder joint between the PCB and a package. The PCB comprises at least one slotted pad and at least one health monitoring circuit (HMC). The slotted pad comprises a first pad connected to a ground of the PCB, and a separate second pad, both pads of the slotted pad being configured for being joined via a single solder joint to a single pad of the package. The first and second pads are connected to the HMC, the HMC comprising: a test oscillator configured for generating a known current flowing via the second pad, the solder joint, and the first pad; and a measuring unit for measuring a voltage between the first and second pads of the PCB, thereby enabling calculation of the solder joint's resistance. | 02-20-2014 |
20140058688 | Failure Diagnosis Method for Photovoltaic Power Generation System - A low-cost failure diagnosis method, without addition of a measuring unit and a communication unit, provided for a solar battery system, of calculating a working temperature and the number of failed solar battery modules in a solar battery array, by calculating a solar radiation amount while updating a predetermined coefficient as a ratio between a short-circuit current and a working current in accordance with state of the solar battery array and using measured data having the working current and working voltage measured with a detection unit. | 02-27-2014 |
20140067290 | STREETLAMP FAULT DETECTION APPARATUS AND STREETLAMP FAULT DETECTION METHOD THEREOF - A streetlamp fault detection apparatus and a streetlamp fault detection method thereof are provided. The streetlamp fault detection apparatus is coupled to a streetlamp loop, and stores an impedance condition table defining a reference impedance range and a non-reference impedance range. The streetlamp fault detection apparatus measures a total impedance value of the streetlamp loop in a measurement period, determines that the streetlamp loop is in a normal operating state if the total impedance value stably falls within the reference impedance range in the measurement period, and determines that the streetlamp loop is in a fault state if the total impedance value falls into the non-reference impedance range in the measurement period. | 03-06-2014 |
20140067291 | Method and System For Detecting Arc Faults and Flashes Using Wavelets - A method for detecting an arc event occurring in an electrical system includes sensing a voltage using a voltage sensing device coupled to a component of the electrical system, producing a signal waveform representative of the sensed voltage using the voltage sensing device, and sampling at a predetermined frequency the voltage signal waveform to generate a plurality of sample waveforms. The method further includes applying a wavelet transform to each sample waveform to decompose them into a predetermined number of detailed waveforms using a corresponding number of successive wavelet components, dividing each detailed waveform into a plurality of segments, analyzing the plurality of segments to detect a change in one or more of the properties of the corresponding detailed waveform, and determining an occurrence of the arc event based on the duration of the detected change of one or more of characteristics of the corresponding detailed waveform. | 03-06-2014 |
20140074413 | DETECTION OF GENERATOR STATOR INTER-CIRCUIT FAULTS - Aspects of the invention provide a system and method for detecting inter-circuit faults within a generator stator. In one embodiment, a computer system includes: a sampler for sampling phase voltages and phase currents of a generator stator; a plurality of pre-defined blocks for enabling, based on the sampled phase voltages and currents, an inter-circuit fault detection scheme; a level detection block for determining, in response to the enabled inter-circuit fault detection scheme, a plurality of differences between the sampled phase voltages; and a comparison logic device for comparing, in response to the enabled inter-circuit fault detection scheme, each of the differences of the sampled phase voltages and determining, based on the differences, an inter-circuit fault within at least one phase of the generator stator. The system may also include a negative sequence voltage block for detection of inter-circuit fault within a generator stator. | 03-13-2014 |
20140088893 | HYBRID POWER MODULE WITH FAULT DETECTION - A wireless field device assembly comprises a process sensor, a housing, a power module, and a processor. The process sensor is configured to monitor a process variable and produce a sensor signal. The housing encloses an interior space of the wireless field device. The power module comprises an energy storage device and a connection to a local power source, and is configured to be housed in the wireless field device. The processor is located within the interior space, and is powered by the power module. The processor produces a fault signal value used to differentiate between energy storage device faults, local power source faults, and no-fault states. | 03-27-2014 |
20140095086 | DIRECT CURRENT ARC FAULT DETECTOR AND CIRCUIT INTERRUPTER, AND METHOD OF DETECTING AN ARC IN A DIRECT CURRENT POWER CIRCUIT - A direct current arc fault detector includes a first current sensor sensing an alternating current component of current flowing in a DC power circuit; a second current sensor sensing a DC component of the current; and a bandpass filter filtering the sensed AC component. A demodulating logarithmic amplifier includes an input of the filtered AC component, and an output. An integrator or minimum detector includes an input connected to the amplifier output, and an output. A processor repetitively inputs and then resets the integrator or minimum detector output, and determines an arc when, for a predetermined time: the sensed DC component being greater than a first predetermined value, and a present value of the integrator or minimum detector output being greater than or different from a previous value of such output by more than a second predetermined value, or the present value being greater than a third predetermined value. | 04-03-2014 |
20140095087 | METHOD FOR GENERATING A FAULT SIGNAL - A method generates a fault signal that displays whether an internal transformer fault is present. According to the method, a differential current signal that indicates the difference between the primary current and the secondary current of the transformer, taking into consideration the conversion ratio of the transformer, is ascertained. A plurality of different criteria signals are generated using the differential current signal. At least two individual fuzzy matching functions are assigned to each criteria signal. The fuzzy matching functions are analyzed, thereby generating the fault signal. | 04-03-2014 |
20140107955 | GENERATOR NEUTRAL GROUND MONITORING SYSTEM AND METHOD - Fault analysis and detection involving a generator neutral ground includes monitoring a voltage waveform across a neutral grounding transformer of a generator. During monitoring of the voltage waveform a sample of the voltage waveform is acquired. Previously, a number of similar past samples of the monitored waveform were acquired and stored as well. The present sample is compared to one or more of these stored, past samples so that, based on a similarity between the present sample to the past samples, a generator fault indicated by the present sample can be identified. Identifying the generator fault can include recognizing that it is presently occurring or that it may occur in a predictable timeframe. Additionally, identifying a component of the generator that caused, or will cause, the generator fault can be identified as well. A diagnostic message or control signal based on the identified generator fault can then be generated. | 04-17-2014 |
20140114591 | Method For Monitoring And Measuring An Insulation Resistance With Interference-Resistant Measuring Signal - A method for monitoring and measuring an insulation resistance in ungrounded and grounded power supply systems includes the method steps of generating a periodic measuring signal, coupling in the measuring signal between active conductors of the power supply system to be monitored and ground, and detecting and evaluating measured values of the measuring signal. In one embodiment of the invention, the generated measuring signal is formed as a multi-frequency signal by the superposition of a finite number of harmonic oscillations with at least three harmonics. Alternatively, the multi-frequency signal can also be realized by means of a targeted, portioned construction of the signal shape in the time domain on the basis of a binary sequence optimization or by generating the measuring signal by means of the time-division multiplexing method. | 04-24-2014 |
20140114592 | OPERATIONAL MONITORING OF ELECTROCHEMICAL CAPACITORS - The invention provides operational monitoring for electrochemical capacitors and, more specifically, the monitoring of operational performance characteristics of electrochemical capacitors using electrochemical impedance measurement in an application system in the field. The apparatus and methods of the present invention monitor the operational characteristics of a plurality of electrochemical capacitors in an application system with the goal of providing state of health information to the application system or through another monitoring or alert system. By generating an input monitoring signal to query each cell in the pack and calculating the impedance measurement signal from the resulting output signal, the real-time impedance measurements can be compared against a stored electrochemical impedance model to provide state of health information. Real-time monitoring data based on the state of health information can then be output to the application system or through another monitoring or alert system. | 04-24-2014 |
20140129159 | SOLENOID STATUS DETERMINATION METHODS AND SYSTEMS - Methods and systems for determining the status of a solenoid. A method includes measuring a plurality of parameters associated with a current conducting through the solenoid. The measured parameters are compared to predetermined reference parameters to determine the status of the solenoid. A system includes a sensor configured to measure a plurality of parameters associated with a current conducting through the solenoid. The system includes a control module configured to receive the measured parameters and operable to compare the measured parameters to predetermined reference parameters to determine the status of the solenoid. | 05-08-2014 |
20140136128 | APPARATUS AND METHOD FOR SENSING TRANSISTOR AGING EFFECTS - An integrated circuit implements a transistor aging effects sensor comprising first and second delay lines, each comprising a plurality of delay elements, and a register. The register comprises a plurality of flip-flops having data inputs driven by respective outputs of respective ones of the delay elements of the first delay line and clock inputs driven by one or more clock signals provided by at least one of the delay elements of the second delay line. Data outputs of the flip-flops of the register are indicative of one or more aging effects in transistors of the first and second delay lines. For example, the register may comprise a thermometer encoded register providing digital output signals used to determine aging effects in the transistors of the first and second delay lines. Embodiments can be implemented using differential delay lines or delay lines comprising respective inverter chains. | 05-15-2014 |
20140136129 | SOLAR CELL CHARACTERISTICS DETERMINATION - An apparatus for determining solar cell characteristics includes a quantum efficiency measurement tool configured to measure an external quantum efficiency of the solar cell and a reflectivity measurement tool configured to measure the reflectivity of the solar cell. The apparatus also includes a capacitance measurement tool configured to measure the capacitance of the solar cell and a processor configured to calculate a diffusion length of the solar cell based on the measured quantum efficiency, reflectivity and capacitance of the solar cell. | 05-15-2014 |
20140136130 | Method and Apparatus for Motor Drive Diagnostics - A method for detecting fault conditions in a motor drive at power up is disclosed. During the power up sequence, input power is applied to the motor drive and the DC bus begins to charge to its normal operating level. Once the DC bus has reached a suitable level and prior to commanding motion of the attached motor, the shunt resistor is connected across the DC bus for a short duration. The amplitude of voltage and current present on the DC bus are measured while the shunt resistor is connected across the DC bus. The measurements are then used to detect fault conditions in the motor drive. The presence of the fault conditions are relayed to an operator. Thus, the motor drive may detect certain fault conditions prior to commanding motion from the drive. | 05-15-2014 |
20140142873 | SYSTEMS AND METHODS OF DISCRIMINATING DC ARCS AND LOAD SWITCHING NOISE - Systems and methods of detecting arcing in DC power systems that can differentiate between DC arcs and load-switching noise. The systems and methods can determine, within a plurality of predetermined time intervals, at least the pulse count (PC) per predetermined time interval, and the pulse duration (PD) per predetermined time interval, in which the PC and the PD can correspond to the number and the intensity of potential arcing events in a DC power system, respectively. The systems and methods can process the PC and PD using one or more arc fault detection algorithms, thereby differentiating between DC arcs and load-switching noise with increased reliability. | 05-22-2014 |
20140142874 | HOME RUN ARC DETECTION AT THE PHOTOVOLTAIC STRING LEVEL USING MULTIPLE CURRENT SENSORS - Systems and methods of detecting arcing in DC power systems that can differentiate between DC arcs and load-switching noise. The systems and methods can determine, within a plurality of predetermined time intervals, at least the pulse count (PC) per predetermined time interval, and the pulse duration (PD) per predetermined time interval, in which the PC and the PD can correspond to the number and the intensity of potential arcing events in a DC power system, respectively. The systems and methods can process the PC and PD using one or more arc fault detection algorithms, thereby differentiating between DC arcs and load-switching noise with increased reliability. | 05-22-2014 |
20140156208 | NETWORK EVENT DETECTION - Various aspects of the disclosure are directed to methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for identifying network events. In one aspect, a method includes monitoring signal characteristic values for signals transmitted over a communications channel of a power line communications system and determining that a signal level value for the channel is less than a threshold signal level value for the channel. In response to determining that the signal level value for the channel is less than the threshold signal level value for the channel, a signal to noise ratio for the communications channel is computer and it is determined that the signal to noise ratio for the channel exceeds a threshold value. In response to determining that the signal to noise ratio for the communications channel exceeds the threshold value, storing data received over the communications channel is stored as valid data. | 06-05-2014 |
20140163907 | SYSTEMS AND METHODS FOR FAULT DETECTION - Systems, methods, and computer-readable media for fault detection are disclosed. At least one controller may identify a plurality of values where each value corresponds to a monitored parameter or a measured parameter. The at least one controller may determine a respective deviation between each of the plurality of values and an expected value, and may further determine whether at least one of the respective deviations exceeds a threshold. Upon a determination that at least one of the respective deviations exceeds the threshold, a fault may be detected. Each of the plurality of values may be associated with a respective device that monitors or measures the value. A detected fault may be associated with the device that monitors or measures the value determined to deviate from the expected value by more than the threshold. | 06-12-2014 |
20140172327 | UNDERGROUND TRANSFORMER ELECTRICAL FAULT DETECTION USING ACOUSTIC SENSING TECHNOLOGY - An electrical fault detection system includes an underground transformer unit having an enclosure and an electrical busbar element extending from the enclosure, and an acoustic sensor apparatus operatively coupled to an external structure of the enclosure or the electrical busbar element. The acoustic sensor apparatus is structured to: (i) detect an acoustic signal within the enclosure, (ii) analyze the detected acoustic signal and determine whether the detected acoustic signal is indicative of an electrical fault within the enclosure using an event time correlation (ETC) algorithm, and (iii) responsive to determining that the detected acoustic signal is indicative of an electrical fault, output a message indicating that a fault has been detected. | 06-19-2014 |
20140180611 | Nonvolatile Thermal Memory Method And Apparatus For Electronic Overload Relay - An electronic overload relay includes a microcontroller having an internal random-access memory (RAM) in which a motor thermal model is stored. The microcontroller is coupled to a power supply having a bulk storage capacitor. In response to a trip or stop condition of a protected motor, the thermal model is maintained in the RAM with no timing or decrementing. When the motor restarts, the microcontroller calculates a change in capacitor voltage to estimate the motor stop duration. The thermal model is decremented based on the estimated duration. | 06-26-2014 |
20140180612 | INDUCTIVE CHARGING DEVICE - An inductive charging device for a handheld machine tool storage battery device includes at least one foreign-object detection unit having at least one operating time counter and at least one compensating unit. The compensating unit sets and/or adapts at least one foreign-object detection parameter of the foreign-object detection unit as a function of an operating time t. | 06-26-2014 |
20140188409 | DETECTING TSV DEFECTS IN 3D PACKAGING - A computer determines a threshold signal voltage of a semiconductor device. The computer determines a first expected signal propagation time for a signal travelling through a first test path of the semiconductor device. The computer transmits a first signal through the first test path. The computer measures a signal voltage and signal propagation time of the first signal. The computer determines that the signal voltage of the first signal does not reach or exceed the threshold signal voltage within the first expected signal propagation time. The computer determines that the first test path contains a defect. | 07-03-2014 |
20140195175 | MEASURING DIELECTRIC BREAKDOWN IN A DYNAMIC MODE - Embodiments of the present invention provide a method, system, and program product for testing a semiconductor device to measure dielectric breakdown. A computer applies a plurality of stress voltages to a semiconductor device under test. The computer determines a plurality of current measurements until a failure criteria occurs, using a predefined voltage ramp rate and a predefined plurality of stress voltage steps, wherein the number of the plurality of current measurements is less than or equal to the number of the predefined plurality of voltage steps. The computer identifies a stress voltage at which the semiconductor device fails. The computer calculates a frequency dependent voltage acceleration factor based on the quotient of the natural log of the voltage at which the semiconductor device under test failed to the natural log of the predetermined voltage ramp rate. | 07-10-2014 |
20140195176 | DERIVING BROADBAND COMMUNICATION SYSTEM SERVICE AREA FOR SIGNAL LEAKAGE DETECTION - An improved, adaptive and uniformly applicable estimation of the percentage or fraction of a broadband communication system (BCS) plant that is monitored for signal egress during a given period of time is provided by generating and collecting polygons along all possible routes traversed by DOS service vehicles within a service area, preferably by comparison with a roadway map, to define the service area with improved accuracy. The number of polygons generated and collected is then limited by the number of polygons in which DCS service vehicles have been reported in a given period of time or inspection interval. The limited number of polygons is then divided by the number of polygons generated and collected to determine a fraction or percentage of the BCS system which has been monitored during the given time period and can be used in a computation of a cumulative leakage index (CLI) value. | 07-10-2014 |
20140195177 | NOISE PROPAGATION IMMUNITY OF A MULTI-STRING ARC FAULT DETECTION DEVICE - Systems and methods of detecting arcing in a DC power system that can provide improved noise propagation immunity. The system includes at least two current sensors for monitoring at least two current outputs, respectively. The current sensors have reverse polarities, and are configured and arranged in parallel to provide a combined current output signal. The current sensors monitor the respective current outputs, which are provided for monitoring by the current sensors over at least two adjacent conductors. If arcing occurs at a location on a first conductor, then arcing (adjacent conductor crosstalk), having an arc current signature like that of the arcing on the first conductor, can occur at a location on the other adjacent conductor. The system can effectively cancel out such adjacent conductor crosstalk within a photovoltaic (PV) system, thereby improving the capability of an arc fault detection device for detecting arcing at the PV string level. | 07-10-2014 |
20140214342 | VERIFICATION OF TEST PROGRAM STABILITY AND WAFER FABRICATION PROCESS SENSITIVITY - A system, method, and computer program product are provided for verifying sensitivity test program stability. A sensitivity test program including a set of tests is run on a plurality of integrated circuit die fabricated on a silicon wafer, where each test in the set of tests specifies a different set of operating parameters for structures within each integrated circuit die. Results of the sensitivity test program are received for each integrated circuit die and the results of the sensitivity test program are stored in shadow bins allocated within a memory, where each shadow bin corresponds to a different test in the set of tests. The results may be used to verify and optimize operating voltage and operating frequency of different tests in the production test program and wafer fabrication process sensitivity. | 07-31-2014 |
20140214343 | Method And System For Detecting A Failed Rectifier In An AC/DC Converter - A device for detecting a failed rectifier in an AC/DC converter for converting three-phase AC power to DC power and having its AC side connected to a three-phase AC source and its DC side connected to a DC load, the AC/DC converter including a rectifier circuit including at least three legs, each of the legs connected to a corresponding AC phase and including at least one rectifier, the device including a measuring unit for measuring and sampling AC current for each of the phases and a calculating unit configured to estimate an instantaneous DC current based on the measured instantaneous AC currents during one period of the power supply frequency. | 07-31-2014 |
20140222355 | SYSTEM AND METHOD FOR POWER TRANSMISSION AND DISTRIBUTION ASSET CONDITION PREDICTION AND DIAGNOSIS - A computer-implemented system and method for predictive and diagnostic analysis of an electrical transmission, generation and distribution asset health includes a computer with a non-transient computer readable medium able to receive data regarding an asset, its components, component subsystem and parameters related thereto. Instructions stored on the non-transient computer readable medium execute instructions that predictively calculate overall asset health and also calculated the states of subsystems and component parameters, providing a diagnostic of the causes of poor asset health. | 08-07-2014 |
20140236501 | METHOD OF MONITORING PERFORMANCE OF AN ELECTRIC MOTOR - A method of monitoring performance of an electric motor includes calculating an actual input power and an expected input power of the electric motor. A power difference between the actual input power and the expected input power is recursively calculated over at least one period of an electrical cycle of the electric motor to determine a variance in the power difference during the at least one period of the electrical cycle. The variance in the power difference is compared to a threshold value to determine if the variance in the power difference is greater than the threshold value or less than the threshold value. The control module may signal that the electric motor is not operating within allowable operating parameters when the variance in the power difference is less than the threshold value. | 08-21-2014 |
20140236502 | Electrical Power System Phase and Ground Protection Using an Adaptive Quadrilateral Characteristic - A quadrilateral distance module may be used to detect faults in an electrical power system. A resistive coverage of the quadrilateral distance module may be defined by an adaptive resistance blinder. The adaptive resistance blinder may be adapted to certain power system conditions, such as forward load flow and/or reverse load flow. A forward adaptive resistance blinder may be calculated in parallel with a reverse adaptive resistance blinder. The forward adaptive resistance blinder may use a polarizing quantity adapted for forward load flow conditions, and the reverse adaptive resistance blinder may use a polarizing quantity adapted for reverse load flow conditions. Fault detection may be performed by comparing both the forward and reverse adaptive resistance blinders to power system stimulus and detecting a fault when the stimulus satisfy either blinder. | 08-21-2014 |
20140244187 | Method for Detecting Islanding with Periodically Transmitted Sequence of Unsynchronized Signals - Conditions in a power grid are detected by sampling a voltage in the grid. A normal condition hypothesis is modeled as a sinusoid, and a transient condition hypothesis is modeled as a sum of damped sinusoids. The samples are used to construct a probability density function. A likelihood ratio based on the pdf and the hypotheses is compared to a threshold to determine whether the condition is normal or transient. | 08-28-2014 |
20140257722 | PREDICTING MOTOR FAILURE BASED ON RELATIONSHIP OF MOTOR PAIR CHARACTERISTICS - A system and method of predicting motor failure based on relationships of motor pair characteristics, such as temperatures. A motor pair detection module receives temperatures for each motor of a motor pair over a predetermined window. The motor pair detection module determines whether at least one of the temperatures of the first motor and the second motor exceeds a temperature threshold during the predetermined time window. The motor pair detection module further determines whether the temperature of the first motor differed from the temperature of the second motor by at least a difference threshold for at least a percentage threshold of the predetermined time window. Based on the determinations, the motor pair temperature outputs an alarm signal to indicate a potential impending failure of one of the motors of the motor pair. | 09-11-2014 |
20140257723 | SYSTEMS AND METHODS FOR ARC FLASH HAZARD ASSESSMENT - An arc flash hazard assessment method includes storing electrical equipment data in memory, defining an arc flash model function based on the data, and estimating the model function based on a weighted average of interpolated and extrapolated values. The electrical equipment data may include an operating voltage, a fault current, and a clearing time. The model function is defined for at least three reference voltages V | 09-11-2014 |
20140278157 | GFCI Test Monitor Circuit - A circuit interrupting device having an auto-monitoring circuit for periodically testing various functions and structures of the device. The auto-monitoring circuit initiates an auto-monitoring routine which, among other things, generates a self-test fault condition and determines whether the detection mechanisms within the device properly detect the self-test fault. Processing an early detection signal determines whether the self-test fault was properly detected without interfering with the normal operation of the detection circuitry and without causing a false trip within the device. Additional functionality of the auto-monitoring circuit permits automatic verification that the device is properly wired, that is, not miswired, and determines whether the device has reached the end of its useful life. | 09-18-2014 |
20140278158 | SYSTEMS AND METHODS FOR DETECTING AND IDENTIFYING ARCING - Systems and methods for detecting and identifying arcing are disclosed. A method of detecting arcing includes obtaining data indicative of voltage and data indicative of current, determining a waveform of a cycle of a primary load current according to the data indicative of current, determining at least one noise signal according to the determined waveform of a cycle of the primary load current and the data indicative of current, determining a probability density of the noise signal according to a time window, and comparing the probability density of the noise signal with at least one model probability density. | 09-18-2014 |
20140278159 | Alternator Tester Having Belt Slip Detection - A diagnostic tool for testing the performance of a component of a vehicle includes a processor configured to process test information from an alternator component of the vehicle and control and activate the alternator component. The diagnostic tool further includes a memory configured to store the test information of the alternator component and software that operates the alternator component of the vehicle, and a sensor configured to sense the output voltage of the alternator and ensure that the diagnostic tool is properly operating the alternator component. | 09-18-2014 |
20140278160 | ESTIMATION METHOD, ESTIMATION DEVICE, AND INSPECTION DEVICE FOR VARIABLE RESISTANCE ELEMENT, AND NONVOLATILE MEMORY DEVICE - An estimation method for a variable resistance element including (i) a first electrode, (ii) a second electrode, and therebetween (iii) a variable resistance layer in which a local region is formed which has resistive status that reversibly changes according to an electric pulse applied between the first electrode and the second electrode, the estimation method including: obtaining, when changes are made to the resistive status of the local region, measurement values each indicating a resistance state after one of the changes; and determining, based on a distribution of the obtained measurement values, an estimated amount of a physical parameter regarding structural characteristics of the local region by a calculation. | 09-18-2014 |
20140297206 | Universal Smart Energy Transformer Module - A universal smart energy transformer module (USETM) that uses an array of sensors to monitor and measure characteristics of the electrical power delivered and utilized at a location, along with other conditions in the area surrounding the location. The invention then uses the data from these sensors to determine the condition and performance of the transformer (for example, its input and output, power quality etc.) and also to identify any anomalies detected within the local power system that could threaten reliable electric supply on the electric grid, or pose a danger to people. A notification of such condition may be distributed using the secure, uninterruptible communications system. | 10-02-2014 |
20140297207 | SAFETY ANALYSIS SYSTEM FOR WIRING - A safety analysis system for wiring, including: a storage unit that stores electric wire-terminal connector correlation information in which each of a plurality of electric wires and a pair of connectors are correlated with each other, terminal connector-function correlation information in which the pair of connectors located at terminals and a function of a device to which the connectors are connected are correlated with each other, and function determination information including a combination of a plurality of functions that are not allowed to be lost at the same time; and a processing unit that matches the electric wire-terminal connector correlation information and the terminal connector-function correlation information when the wire harness is identified, and generates electric wire-function correlation information in which each of the plurality of electric wires and the function of the device are correlated with each other. | 10-02-2014 |
20140297208 | Remote HVAC Monitoring And Diagnosis - A monitoring system for a heating, ventilation, and air conditioning (HVAC) system of a building includes a monitoring device and a server. The monitoring device is installed at the building. The monitoring device | 10-02-2014 |
20140303913 | BROKEN ROTOR BAR DETECTION BASED ON CURRENT SIGNATURE ANALYSIS OF AN ELECTRIC MACHINE - A method for detection of rotor bar faults in an electric machine is provided. The method includes acquiring electrical signals from the electric machine that are representative of the operative condition of the machine. The symmetrical components from the electrical signals are eliminated by squaring an instantaneous value of each data point from the electrical signals and summing the squared values. The method further includes the step of eliminating discontinuities in the electrical signals by applying a window function to compute weighted representation of the squared values. Furthermore, the method includes the step of normalizing the weighted representation to obtain spectral information. The faults in the rotor bar are detected by analyzing the spectral information obtained after normalization. | 10-09-2014 |
20140309952 | Method for Analyzing Faults in Ungrounded Power Distribution Systems - A method analyzes a fault of an ungrounded power distribution system. The method determines a type of a fault in a line segment of the ungrounded power distribution system, and modifies a nodal admittance matrix of the line segment determined before the fault using a transformation matrix corresponding to the type of the fault to produce a faulty nodal admittance matrix of the line segment after the fault. The ungrounded power distribution system is analyzed using the faulty nodal admittance matrix and nodal admittance matrices of functional branches or line segments of the power distribution system. | 10-16-2014 |
20140316725 | POWER NOISE HISTOGRAM OF A COMPUTER SYSTEM - A method is provided for determining a power noise histogram of a computer system. The computer system includes a skitter circuit with multiple skitter bins, each skitter bin of the multiple skitter bins being connected to a signal line at one or more clock cycles. The method includes: connecting each skitter bin to an individual counter circuit; and incrementing a counter when the respective skitter bin is enabled. | 10-23-2014 |
20140330531 | NETWORK MONITORING APPARATUS AND NETWORK MONITORING METHOD - A network monitoring apparatus includes: a monitor unit monitoring data transmitted in a network monitoring and controlling an electric power system of a transformer substation; a system fault determination database representing a correspondence between a fault in the electric power system and a type of data transmitted in the network; a calculation unit calculating a data amount monitored by the monitor unit; a first determination unit determining whether or not the data amount is greater than a threshold value; a second determination unit determining, when the monitored transmission amount is greater than the threshold value, a presence/absence of an occurrence of system fault based on the system fault determination database and a type of the monitored data; and a stop control unit stopping, when the second determination unit determines that the system fault occurs, the determination carried out in the first determination unit. | 11-06-2014 |
20140372051 | ESTIMATING METHOD AND ESTIMATING SYSTEM OF INSULATION LIFETIME - There is provided an estimating method of an insulation lifetime for estimating an insulation lifetime in a sample constituted by including a conductor and an insulator, including: an information acquisition step (S | 12-18-2014 |
20140372052 | METHOD AND DEVICE FOR DETERMINING THE DEFECT TYPE OF A PARTIAL DISCHARGE - The present invention relates to a method and device for determining the defect type of a partial discharge, the method comprising the steps of: forming virtual spaces corresponding to n parameters generated on the basis of defect types that cause a partial discharge; arranging defect type models in the virtual spaces based on the parameter values of the n parameters; extracting parameter values of the n parameters based on a partial discharge event; arranging a partial discharge model in the virtual space based on the parameter values; calculating the distance value between the defect type models and the partial discharge model based on the position information of the defect type models and the partial discharge model; calculating the probability of the defect types based on the calculated distance value; and determining the defect type based on the probability of the defect types for the partial discharge signal event. | 12-18-2014 |
20140379283 | ELECTRIC ARC DETECTION METHOD AND DEVICE - The invention relates to an electric arc detection method and device in which:
| 12-25-2014 |
20150012231 | INTERFERENCE DETECTOR FOR PATIENT MONITOR - A system is disclosed for detecting and calculating the level of ambient and/or environmental noise, such as electromagnetic interference generated by electric power lines, ambient lights, light dimmers, television or computer displays, power supplies or transformers, and medical equipment. In some embodiments, the system performs frequency analysis on the interference signal detected by light photodetectors and determines the power of the interference signal concentrated in the analyzed frequency bands. The worst-case interference level can be determined by selecting the maximum from the computed power values. In some embodiments, the determined interference signal power can be compared with the noise tolerance of a patient monitoring system configured to reliably and noninvasively detect physiological parameters of a user. The results of the comparison can be presented to the user audio-visually. In some embodiments, the system can be used to perform spot check measurements of electromagnetic interference. | 01-08-2015 |
20150012232 | INTELLIGENT DIAGNOSTIC SYSTEM AND METHOD OF USE - A diagnostic system may utilize telemetry from a monitored system to infer information about the operation of various components systems within the monitored system. In embodiments, inferences may be drawn from a comparison of various component systems using a system of implication and exoneration. Exoneration is utilized to isolate faulty components from functioning components by comparing information between the systems, which may run in parallel. A dynamic grouping algorithm may eventually isolate faulty components and suggest the root cause as well as multiple distinct faults. | 01-08-2015 |
20150019147 | METHOD AND DEVICE FOR ESTIMATING DAMAGE TO MAGNETIC TUNNEL JUNCTION (MTJ) ELEMENTS - For first and second magnetic tunnel junction (MTJ) elements, a trend in a relationship between an electrical characteristic of the first and second MTJ elements and an area of the first and second MTJ elements may be determined. Damage to a sidewall of the first and second MTJ elements may be estimated from the trend. At least one operating parameter of an MTJ manufacturing apparatus may be modified based on an X or Y intercept a trend line. | 01-15-2015 |
20150025818 | SYNCHRONIZED TESTING OF MULTIPLE WIRELESS DEVICES - A plurality of wireless devices which communicate with at least one other device are simultaneously tested using a test regime which includes a plurality of tasks. At least one device synchronizes commencement of each task by all wireless devices. At least one device logs performance measurements of each wireless device for each task. Because the wireless devices begin each task at the same time the resulting log files facilitate per-task performance analysis for each wireless device. | 01-22-2015 |
20150025819 | Handling of Undesirable Distribution of Unknown Values in Testing of Circuit Using Automated Test Equipment - A method for masking scan chains in a test circuit of an integrated circuit is disclosed. The test circuit includes multiple mask banks. Different mask patterns are stored in each of the mask banks. A first mask bank of the multiple mask banks is selected and the mask pattern stored in the selected first mask bank is used for masking the output of the scan chains of the test circuit during a first portion of a test cycle. A second mask bank of the multiple mask banks is selected and the ask pattern stored in the selected second mask bank is used for masking the output of the scan chains of the test circuit during a second portion of the test cycle. | 01-22-2015 |
20150025820 | METHOD OF MEASURING THE AGING OF ELECTRICAL CABLES - A method comprises: injecting at an instant a reference signal at an injection point of said assembly, the reference signal having been obtained beforehand by injecting an initial signal at the injection point at an instant, by a measurement of the reflected signal resulting from this injection, and by the time reversal of the measured signal; measuring a reflected signal resulting from the propagation of the signal in the assembly of at least one cable; and determining the aging of the assembly of at least one cable between the instant and the instant, the aging being deduced from the measurement of the reflected signal. | 01-22-2015 |
20150032393 | SWITCHING LOSS MEASUREMENT AND PLOT IN TEST AND MEASUREMENT INSTRUMENT - The disclosed technology relates to a method and apparatus for graphically displaying a switching cycle of a switching device. A switching voltage and a switching current are acquired for a device under test via a voltage probe and a current probe, respectively, for a plurality of switching cycles of the device under test. The switching current versus the switching voltage is plotted on a current versus voltage plot as a curve for each of the switching cycles. Each of the curves on the current versus voltage plot overlap each other and are displayed to a user. | 01-29-2015 |
20150039251 | EVALUATION METHOD, EVALUATION DEVICE, EVALUATION PROGRAM, RECORDING MEDIUM, AND MANUFACTURING METHOD FOR ORGANIC ELECTROLUMINESCENCE ELEMENT - A method of evaluating an organic electroluminescence element which includes at least a light emitting layer between an anode and a cathode and has a light emitting element area of not less than 100 mm | 02-05-2015 |
20150039252 | SYSTEM AND METHOD FOR DETECTING GENERATOR INCIPIENT FAILURES - A method, system and computer software for detecting an incipient failure of a generator in a power system including the steps of ascertaining one or more generator reference parameter of the generator for use as a baseline reference; measuring one or more operating parameter values of the generator; using the one or more operating parameter values to solve for an estimated present value of the one or more of the generator's current performance parameters using particle swarm optimization technique; and determining whether the estimated present values of the one or more of the generator's current performance parameters are outside of an acceptable limit. | 02-05-2015 |
20150051850 | SYSTEMS AND METHODS FOR SWING ANGLE ESTIMATION IN AN ELECTRICAL POWER SYSTEM - In accordance with one embodiment, a method for detection of power swing for at least a first range of swing angles between an internal voltage (E | 02-19-2015 |
20150051851 | Method and Device of Remaining Life Prediction for Electromigration Failure - A method for predicting remaining life of electromigration failure is disclosed. The methods includes: establishing an electromigration life model of a MOS device; acquiring a normal electromigration failure lifetime τ1, based on a current density and a first environment temperature under a preset normal operating condition and the electromigration life model; acquiring a current density stress, based on a target prognostic point τ2, a second environment temperature and the electromigration life model; inputting the current density stress into a MOS device electromigration failure warning circuit based on a prognostic cell; and if the prognostic circuit of EM failure for a MOS device outputs a high level after a time τ3, acquiring a remaining life of electromigration failure corresponding to τ2′ based on τ1, τ2 and τ3. A device for remaining life prediction for electromigration failure is also disclosed. | 02-19-2015 |
20150066399 | Testing Apparatus - A circuit board testing apparatus detects sparking and partial discharge between wiring patterns on a circuit board to determine if the circuit board is defective. A constant current source feeds a constant current to a wiring pattern to be tested. A voltage measurement part measures the resulting voltage at the wiring pattern. A normal state voltage gradient calculation part calculates a voltage gradient in a normal state where there is no sparking or partial discharge. A determination part determines whether the voltage gradient remains invariant, by comparing voltage measurement results within a predetermined range with an estimated value of the voltage based on the voltage gradient in the normal state. The determination part determines whether a circuit board is defective, on the basis of whether the voltage gradient remains invariant. | 03-05-2015 |
20150073733 | Inspection System for Evaluating Electrical Parts for Unwanted Partial Discharge - An electrical part testing system for evaluating quality of an insulated electrical part, including a computer-controlled switching apparatus for providing an original voltage to the electrical part automatically according to a pre-established testing scheme calling for provision of voltage to each phase of the part, in turn, while grounding the other phases of the part. A high-frequency filter for receiving receive the original voltage, receiving a load voltage emanating from the electrical part in response to the part receiving the original voltage, and filtering the original voltage from the load voltage to isolate any partial-discharge voltage added to the original voltage by the electrical part while the part is being electrified by the original voltage, yielding a filtered signal. A computing device determines, based on a comparison of a peak amplitude of the partial-discharge inception voltage to a voltage threshold, the quality of the electrical part being tested. | 03-12-2015 |
20150073734 | Method and Device for Measuring Electrical Quantities - A method and a device for measuring electrical quantities, at least voltage and current, preferably also power, in three-phase systems (L1, L2, L3), wherein, for the three phases (L1, L2, L3), the phase voltages U | 03-12-2015 |
20150081234 | POWER LINE PARAMETER ADJUSTMENT AND FAULT LOCATION USING TRAVELING WAVES - Fault location using traveling waves in an electric power delivery system according to the embodiments herein uses line parameters that are adjusted using traveling wave reflections from known discontinuities in the electric power delivery system. The arrival times of a traveling wave and a reflection of the traveling wave from a known discontinuity may be used to adjust parameters of the electric power delivery system such as, for example, line length. The adjusted parameter can then be used to more accurately calculate the location of the fault using the traveling waves. | 03-19-2015 |
20150088437 | Memory Interface With Integrated Tester - In an embodiment, a memory interface includes integrated circuitry to verify the integrity of the memory interface. The circuitry propagates a test pattern through different paths of the memory interface, and checks the result against a reference value to determine whether the components of the paths are operating within an acceptable tolerance. The memory interface can also communicate with ATE to initiate such tests and return the results to the ATE. | 03-26-2015 |
20150088438 | RATIO METRIC CURRENT MEASUREMENT - The total current flow in a given electric circuit path is estimated by measuring the current in a second parallel current path and applying a ratio of the conductivity of the main and secondary path. Earth leakage current is measured by passing three wires through a toroid so as to detect differential current flow. Each wire is a conduction path wire parallel to each phase cable. The relative harmonic content between the fundamental and higher frequency components of a load current are calculated using a conduction path parallel to the main power cables. | 03-26-2015 |
20150094965 | Electrical Power Grid Monitoring Apparatus, Articles of Manufacture, and Methods of Monitoring Equipment of an Electrical Power Grid - Electrical power grid monitoring apparatus, articles of manufacture, and methods of monitoring equipment of an electrical power grid are described. According to one aspect, an electrical power grid monitoring apparatus includes a communications interface configured to access electrical data indicative of electrical energy received at a plurality of consumer locations from an electrical power grid at a plurality of moments in time, the consumer locations being coupled with one or more unbalanced single phase feeders of a distribution system of an electrical power grid and which individually comprise a plurality of components configured to conduct the electrical energy from at least one electrical energy source to the consumer locations, and processing circuitry coupled with the communications interface and configured to use the electrical data to estimate a state of the electrical power grid and to identify one of the components as being in a potentially degraded state using the estimation of the state of the electrical power grid. | 04-02-2015 |
20150094966 | QUADRATURE-BASED VOLTAGE EVENTS DETECTION METHOD - The quadrature-based voltage events detection method accurately characterizes magnitude and duration of short duration voltage variations, such as sag, swell and interruption. The short duration voltage events are quantified by calculating the rms voltage. The present method utilizes a quadrature procedure to calculate the rms values for power quality event detection. Parameters that are most influenced by variations in rms voltage are used for event detection. Experimental results demonstrate the superiority, accuracy, and robustness of the quadrature method for all cases considered. | 04-02-2015 |
20150094967 | FAILURE DIAGNOSIS METHOD AND FAILURE DIAGNOSIS SYSTEM FOR PHOTOVOLTAIC SYSTEM - A failure diagnosis system is configured to calculate an estimated irradiation on a first photovoltaic string and an estimated operating temperature of the first photovoltaic string based on a short-circuit current and an open-circuit voltage on a current-voltage characteristic of the first photovoltaic string, and the array output voltage value and the array output current value measured by an array measurement apparatus. The failure diagnosis system is configured to calculate an estimated current value of the first photovoltaic string based on the estimated irradiation, the estimated operating temperature, and the current-voltage characteristic. The failure diagnosis system is configured to diagnose degradation of the first photovoltaic string by comparing the measured current value of the first photovoltaic string and the estimated current value. | 04-02-2015 |
20150100254 | TESTING METHOD OF TOUCH DEVICE AND SYSTEM THEREOF - A testing method of a touch device and a system thereof are provided. The testing method includes following steps. A test sensing information generated by the touch device is received, and the test sensing information is physical characteristic information provided by sensors of the touch device. A test gesture signal and a test keypad signal generated by the touch device are received, the test gesture signal includes gesture coordinates provided by touch device, and the test keypad signal includes a keypad key triggering signal generated by the touch device. According to a preset table, in order to generate a test result, whether the test sensing information, the test gesture signal, and the test keypad signal match data of the preset table or not is determined, and whether the touch device works properly is determined according to the test result. | 04-09-2015 |
20150106042 | COMPUTER-READABLE MEDIUM STORING ANALYSIS-SUPPORT PROGRAM, ANALYSIS SUPPORT METHOD, AND ANALYSIS SUPPORTING DEVICE - A computer-readable recording medium having stored a program for an analysis-support process includes acquiring via information representing positions of a plurality of vias of a first and second via groups in a circuit board, the plurality of vias of the first and second via groups having a first and second potentials, respectively; identifying, based on the acquired via information, second via in the second via group, a first distance between the second vias and a first via in the first via group being equal to or smaller than a certain distance; identifying, based on the via information, a third via in the first via group, the third via being different from the first via, a second distance between the third via and the first via being equal to or smaller than the first distance; and generating association information that represents associations of the first, second, and third vias. | 04-16-2015 |
20150106043 | Overcurrent Fault Detection Device for Electrical Drive Control System - An overcurrent fault detection device includes: an inverter converting DC current to three-phase AC currents for driving a motor; a DC voltage detector; phase current detectors; a rotational position detector that detects a rotational angle of the motor; a control circuit that controls a gate drive circuit, which controls the inverter at every predetermined cycle, based upon the phase current values, a motor rotational angle detection value, and a speed command or a torque command from a higher-order control device; and a decision-making circuit that detects an overcurrent based upon the phase current values at every predetermined cycle, wherein: the decision-making circuit determines whether or not the phase current values exceed a predetermined amplitude threshold value by frequency detection for any of the phase current values exceeding the predetermined amplitude threshold value, and determines that an overcurrent has occurred upon detecting the frequency. | 04-16-2015 |
20150120218 | NOVEL METHOD FOR REAL TIME TESTS AND DIAGNOSIS OF PARTIAL DISCHARGE SOURCES IN HIGH VOLTAGE EQUIPMENT AND INSTALLATIONS, WHICH ARE IN SERVICE OR OUT OF SERVICE, AND PHYSICAL SYSTEM FOR THE PRACTICAL USE OF THE METHOD - A method for detecting events associated with partial discharges (PDs) in high voltage equipment and installations diagnoses insulation conditions in real time by using PD signal noise discrimination by the parallel use of multiprocessors, which are additionally used for the discrimination, in real time, of different PD sources located in a single position or in different positions. In order to identify the various PD sources, three-dimensional clusters are formed using the coordinates of three parameters characteristic of each pulse: the parameter associated with the front time of the impulse, the parameter associated with the tail time and the parameter associated with the pulse frequency. The diagnostic method can be performed with grid voltage or independent generators as a voltage source, and the invention particularly relates to a novel voltage source designed therefor. A system for the implementation of the method captures PDs, and performs the necessary analysis and measurement. | 04-30-2015 |
20150120219 | DIGITAL COMPENSATION FOR ANTENNA LOAD MISMATCH - Methods, apparatuses, and systems for using Digital Signal Processing (DSP) to detect, measure, and/or compensate for, antenna load mismatch are described. One method provides a test sweep signal as digital input to a Digital-to-Analog Converter (DAC) in a transmit path ending with an antenna, and determines a transmit transfer function based on the digital input and digital output from an Analog-to-Digital Converter (ADC) in a loopback path which is electrically connected in parallel with a load impedance of the antenna. The determined transmit transfer function may be used for any of detecting, measuring, and compensating for, antenna mismatch. | 04-30-2015 |
20150120220 | Detecting IC Reliability Defects - Methods and systems for detecting reliability defects on a wafer are provided. One method includes acquiring output for a wafer generated by an inspection system. The method also includes determining one or more geometric characteristics of one or more patterned features formed on the wafer based on the output. In addition, the method includes identifying which of the one or more patterned features will cause one or more reliability defects in a device being formed on the wafer based on the determined one or more characteristics. | 04-30-2015 |
20150127276 | PHOTOVOLTAIC ELEMENT EVALUATION METHOD, MEASUREMENT SYSTEM CONFIGURATION AND PROCESS FOR USING A MEASUREMENT SYSTEM CONFIGURATION - The invention is related to a photovoltaic element evaluation method, comprising a time-controlled measurement of a current-voltage characteristic of a photovoltaic element, said photovoltaic element being arranged in a measuring circuit for measuring at least an electrical current and/or an electrical voltage of said current-voltage characteristic. The invention relates furthermore to a measuring system configuration for performing time-controlled measurements of current-voltage characteristics of replaceable photovoltaic elements. | 05-07-2015 |
20150127277 | SYSTEM AND METHOD FOR ASSESSING POWER TRANSFORMERS - A system and method for evaluating power transformers is disclosed. The method includes the steps of acquiring data representing one or more parameters of a power transformer, using rules to derive one or more broad physical conditions of the power transformer from the acquired data, and using the broad physical conditions as inputs to compute a plurality of indices. Each index represents a category of failure mechanisms of the power transformer. The method further includes the steps of using the plurality of indices to determine a corrective action and performing the corrective action on the power transformer. | 05-07-2015 |
20150142344 | METHOD AND APPARATUS FOR MEASURING PARTIAL DISCHARGE CHARGE VALUE IN FREQUENCY DOMAIN - The charge value of a partial discharge pulse in an electrical cable is provided by analyzing the frequency spectrum of the propagated pulse in a spectrum analyzer | 05-21-2015 |
20150149100 | METHODS AND APPARATUS TO DIAGNOSE A VALVE USING ELECTRIC VALVE ACTUATORS - Methods and apparatus to diagnose a valve using electric valve actuators are disclosed. An example apparatus includes an electric motor to actuate a valve, rotation sensors to monitor a rotation of a drive shaft associated with the electric motor to determine a distance travelled by the drive shaft, and a valve position sensor to monitor a position of a flow control member of the valve. The example electric valve actuator further includes a processor to generate an alert based on feedback from the rotation sensors and the valve position sensor, the alert associated with a failure of the valve. | 05-28-2015 |
20150293177 | METHOD FOR THE DIAGNOSTICS OF ELECTROMECHANICAL SYSTEM BASED ON IMPEDANCE ANALYSIS - The present invention is concerned with a method for diagnosing the state of electromechanical systems in which electrical rotating machinery is used on the basis of analysis of impedance estimated from at least two currents and two voltages, measured during an operation of the electromechanical system. The method may be especially useful in the condition monitoring of electric motors and generators. The invention combines the information from both the voltage and current signals measurable at the motor terminals. Specifically, the measurements of voltage and current from two or more phases of a polyphase electrical machine are combined to estimate the impedance of the machine, impedance being the resistance to the flow of current that a circuit exhibits when a voltage is applied to it. | 10-15-2015 |
20150301102 | METHOD FOR RECOGNIZING PARTIAL DISCHARGES EMITTED INSIDE OR OUTSIDE AN ELECTRICAL APPARATUS - A method of recognizing partial discharges emitted inside or outside electrical equipment after at least one partial discharge activity has been detected Partial discharge patterns are recorded beforehand in a data base, each pattern being associated with the type of fault that generated it. A new partial discharge (Pd) pattern is acquired. The new partial discharge pattern is compared with discharge patterns that are already recorded in the data base The matching fault in the equipment is obtained by deduction, and the result is recorded in the data base. | 10-22-2015 |
20150311862 | APPARATUS FOR MONITORING LEAKAGE CURRENT OF TRANSFORMER-LESS PHOTOVOLTAIC INVERTER - Disclosed is an apparatus for monitoring a leakage current of a transformer-less photovoltaic inverter, which can reduce the risk of a fault in a grid due to a leakage current in a photovoltaic inverter. The apparatus comprises a low pass filter configured to remove a high-frequency noise of a sensed leakage current signal; an average value calculator configured to calculate an average value of an output of the low pass filter; a direct current component remover configured to subtract the average value from the output of the low pass filter; a phase locked loop circuit section configured to calculate a peak value and a phase of a signal from which the direct current component has been removed; and a resistive component leakage current calculator configured to calculate a resistive component value of a leakage current, based on the peak value and the phase calculated. | 10-29-2015 |
20150316620 | METHOD FOR IDENTIFYING A SYSTEM ANOMALY IN A POWER DISTRIBUTION SYSTEM - A method for identifying a system anomaly in a power distribution system is described herein. The system anomaly may indicate a non-technical loss or a topology error, including schematic entry errors and component modelling errors in the power distribution system. The method includes a) selecting a common coupling point in the power distribution system, wherein downstream branches are connected to the common coupling point; b) determining voltage estimates of the common coupling point according to electrical measurements from the downstream branches; and c) identifying the system anomaly by determining whether a detection criterion is satisfied using the voltage estimates. | 11-05-2015 |
20150316636 | FAILURE DETECTION APPARATUS FOR VOLTAGE SENSOR - [Object] To reliably detect failure in a voltage sensor which detects battery voltage, without erroneous determination. | 11-05-2015 |
20150323603 | APPARATUS AND METHOD FOR DETECTING FAULTS OF BATTERY HEATING SYSTEM AND RELAYS - Disclosed is a method and system for detecting faults of a battery heating system and relays. In particular, a method for detecting welding of each relay such as a main relay, a precharge relay or a heater relay and a method for detecting a fault of a battery heating system such as a short circuit, disconnection or damage of each heater are provided by sensing a voltage. In the methods, the on/off state of the heater relay and the high voltage relays is controlled through a predetermined process to detect a fault of the heater relay or the high voltage relay, and welding of the heater relay or the high voltage relay is then detected from a voltage for fault detection which is sensed through a voltage sensing circuit unit for fault detection. | 11-12-2015 |
20150323608 | INTELLIGENT BATTERY SENSOR FOR VEHICLE AND METHOD OF STORING DATA IN SENSOR - Provided is an intelligent battery sensor for a vehicle which detects an overcurrent module generating an abnormal overcurrent within a vehicle. The intelligent battery sensor for a vehicle includes a data packetizing unit configured to extract internal data variables related to detection of an overcurrent module and packetize the extracted internal data variables, a volatile memory configured to temporarily store the packetized internal data variables, a fault and validity diagnosing unit configured to monitor the packetized internal data variables stored in the volatile memory and classify, when a diagnostic trouble code (DTC) related to the abnormal overcurrent is diagnosed, the packetized internal data variables with respect to a diagnosis time of the DTC, and a nonvolatile memory configured to store the classified internal data variables under the control of the fault and validity diagnosing unit. | 11-12-2015 |
20150331028 | SYSTEM FOR PRECIPITATION-STATIC CHARGE LEVEL ESTIMATION FOR SURFACE DAMAGE TO DIELECTRICALLY COATED SURFACES - A method and system for determining precipitation static charge levels on a dielectrically coated surface is provided. | 11-19-2015 |
20150331050 | NODE ENERGY DIAGNOSIS METHOD FOR FAULT OF SWITCHED RELUCTANCE MOTOR DOUBLE-SWITCH POWER CONVERTER - A node energy diagnosis method for a fault of a switched reluctance motor double-switch power converter. By detecting a transient value of a phase current of a switched reluctance motor double-switch power converter, a node energy standard deviation σ is calculated to be used as a fault characteristic quantity, and a main switch lower-tube short-circuit fault of the switched reluctance motor double-switch power converter is diagnosed by adopting a node energy standard deviation σ curve of the phase current of the switched reluctance motor double-switch power converter in the whole rotation speed range. It also can be applied in fault diagnosis when a main switch lower-tube short-circuit fault occurs in two phases or more than two phases of a switched reluctance motor double-switch power converter. It is applicable to switched reluctance motor power converters with various phase numbers and a double-switch structure, is durable, reliable in fault diagnosis and good in effect, and has good practicability, and wide application prospect. | 11-19-2015 |
20150331063 | Dynamic Modeling and Resilience for Power Distribution - Various examples of methods and systems are provided for power distribution analysis and control. Dynamic modeling and resilience of a power distribution network can be utilized for response to disruptions in power distribution induced by event such as, e.g., severe weather. In one implementation, among others, a resilience metric can be determined based at least in part upon failure neighborhoods and recovery neighborhoods and operational information associated with a power distribution network. A vulnerability of the power distribution network can then be identified based at least in part upon the resilience metric and a response can be determined. The failure neighborhoods and recovery neighborhoods can be identified based at least in part upon a topology of the power distribution network and the operational information associated with the power distribution network | 11-19-2015 |
20150338450 | METHOD FOR ANALYZING A CABLE BY COMPENSATING THE DISPERSION EFFECT OF A SIGNAL WHEN IT IS PROPAGATED WITHIN SAID CABLE - A method for analyzing a cable, into which a first reference signal g is injected, calculates the dynamic correlation between a measurement f of the reflection, from at least one discontinuity in the cable, of the injected signal g and a second reference signal g | 11-26-2015 |
20150346255 | METHOD OF DETECTION AND ISOLATION OF FAULTS WITHIN POWER CONVERSION AND DISTRIBUTION SYSTEMS - A power conversion and distribution system detects faults by monitoring differential current and differential power at certain locations in the system. Current loss faults are detected based on the monitored differential current, and series arc faults are detected based on the monitored differential power. A system controller may make the fault determinations and disable a power converter circuit of the power conversion and distribution system in response to detection of a fault. | 12-03-2015 |
20150346256 | Predicting Service Life of Electrical Equipment - The service life of electrical equipment is predicted using a thermal history sensor mounted in the electrical equipment. At least one thermal history sensor is mounted inside or on an outer wall surface of electrical equipment. The thermal history sensor includes dissimilar metal joints, and the resistance values of the dissimilar metal joints change in response to the amount of intermetallic compound growing in the dissimilar metal joints due to the temperature inside the electrical equipment or of the outer wall thereof during operation. A determining mechanism periodically or irregularly monitors and stores in memory the resistance values of the dissimilar metal joints from the thermal history sensor, and uses the stored history of resistance values to predict the service life of the electrical equipment. | 12-03-2015 |
20150346286 | Fault detection in energy supply networks - A method for detecting a fault in an energy supply network. State values are determined for a plurality of measuring points. The state values, which specify an electrical state of the energy supply network at the respective measuring point, are transmitted to a control center. The state values are used by an evaluation device for detecting a fault in the energy supply network. In order to detect errors in energy supply networks with low short-circuit currents with high reliability and selectivity, the evaluation device performs a state estimation, using a model description of the supply network suitable for describing possible electrical states of the energy supply network on the basis of state variables. The estimation examines whether an electrical state at least approximately matches the respective state values, can be described by the model description. If such a state is lacking, the evaluation device generates an fault detection signal. | 12-03-2015 |
20150346287 | Method For Analyzing Operation State Of Substation By Combining Whole Grid Model With Local Grid Model - The disclosure relates to the crossing field between a power transmission of an ultra-high-voltage and a power system simulation, specifically a method for analyzing an operation state of a substation by combining a whole grid model with a local grid model is provided according to the disclosure. The method includes following steps: performing a load flow calculation for the provincial grid to which a ultra-high-voltage line belongs, wherein initial data of the load flow calculation employs a grid model with E format for national power grid dispatching control center; making an equivalent transform for the model, forming an island independently from the provincial grid to which a ultra-high-voltage line belongs, and making a load flow calculation for the island to acquire data of node voltages and line transmission power. | 12-03-2015 |
20150346288 | DEVICES AND METHODS FOR TESTING THE ENERGY MEASUREMENT ACCURACY, BILLING ACCURACY, FUNCTIONAL PERFORMANCE AND SAFETY OF ELECTRIC VEHICLE CHARGING STATIONS - Testing of electric vehicle charging stations (EVCS) is performed. In an active mode, the device provides or is connected with a programmable load capable of emulating the load of an electrical vehicle (EV). In passive mode, the load is an EV with the device being arranged in series between the EVCS and EV. In either case, energy delivery from the EVCS to the load is monitored by the device to determine energy measurement and billing accuracy of the EVCS. This enables a comparison to be made between a measured value of energy delivered and a metered value of energy delivered as given by the EVCS. Other measurements and safety tests may also be performed by the device. A programmable load controller is also provided for providing a variable effective load as seen by the EVCS based on one or more fixed loads. | 12-03-2015 |
20150355236 | PROTECTIVE RELAYING SYSTEM AND METHOD FOR GATHERING DATA USING THEREOF - A protective relaying system and a data collection method thereof capable of enhancing a data collection efficiency and effectiveness is provided. The protective relaying system may include a plurality of protective relaying modules respectively connected to a switch to control the operation of the switch; a server module coupled to one of the plurality of protective relaying modules, and connected to the plurality of protective relaying modules, respectively, to sequentially collect and store data of the plurality of protective relaying modules; and a remote monitoring unit connected to the server module to collectively receive and collect the stored data of the plurality of protective relaying modules from the server module. | 12-10-2015 |
20150355255 | SYSTEM AND METHOD FOR MONITORING AN ELECTRICALLY-CONNECTED SYSTEM HAVING A PERIODIC BEHAVIOR - A method for monitoring a system having an electrical connection, the connection having at least two phases and respective currents, the system having a periodic behavior, the method including the steps of: connecting sensors to measure respective currents of two phases of the electrical connection; transforming the measured currents to create initial current information; making an initial determination of a normal operation of the system; performing training and modeling of the system, following the initial determination of normal operation of the system, the training and modeling including further current measurements yielding modeled current information; monitoring the system, including instant current measurements to yield instant current information indicative of instant operation status of the system; and making an instant determination of operation status of the system by comparing the instant current information with the modeled current information. | 12-10-2015 |
20150355290 | SYSTEM AND METHOD FOR FAULT MANAGEMENT IN LIGHTING SYSTEMS - This invention discloses a method and apparatus for managing lighting systems is disclosed. The method comprises performing a training phase for a plurality of settings wherein the training is represented by statistical al parameters associated with a statistical model and then performing a monitoring oring phase to monitor the lighting system, determining whether characteristics of the monitored lighting system correspond to the model obtained during the training phase and determining an error exists when the monitored lighting system is not within tolerance values of the statistical parameters. | 12-10-2015 |
20150369878 | SYSTEM AND METHOD TO REDUCE HUMAN ACTIVITY DAMAGE-INDUCED POWER OUTAGE - A method for predicting and managing an occurrence of a power outage resulting from human activity, the method comprising the steps of: obtaining at least one short-term notification of a planned human activity event; generating a corrected human activity notification as a function of the short-term notification and data corresponding to power grid information, geographical information relating to the power grid and customers utilizing the power grid, power grid customer information, and/or historical information corresponding to prior power outages resulting from human activity events; generating an outage probability as a function of the corrected human activity notification and trained predictive modeling data; generating an optimization model as a function of the outage probability; and initiating at least one action for mitigating the occurrence of the power outage resulting from human activity as a function of the optimization model. | 12-24-2015 |
20150370681 | POWER PROFILE DIAGNOSTIC SYSTEM - A power profile diagnostic system includes a power rail. At least one subsystem is coupled to the power rail. A controller is coupled to the power rail and to a power profile database. The controller is configured to monitor the power rail and determine a power consumption profile of the at least one subsystem during a predefined operation of the at least one subsystem. The controller then compares the power consumption profile to a predetermined power profile that is stored in the power profile database in association with the predefined operation, and determines whether a difference between the predetermined power profile and the power consumption profile is indicative of a malfunction of the at least one subsystem. If the difference between the predetermined power profile and the power consumption profile is indicative of the malfunction of the at least one subsystem, the controller provide a malfunction report for display. | 12-24-2015 |
20150377982 | Electrical Power Diagnostic System and Methods - An electrical power diagnostic device and methods are disclosed. A power-supply-side connector is operable to couple to a power supply, and a load-side connector is operable to couple to a load. At least one conductive path for electricity to flow between the power-supply-side connector and the load-side connector, and a diagnostic monitor is operable to monitor and change electrical properties of the power-supply-side connector and the load-side connector. | 12-31-2015 |
20160003886 | METHOD AND DEVICE FOR DETECTING ARCING IN ELECTRICAL INSTALLATION FOR DC POWER - A method for detecting electrical arcs for electrical installations with DC current source, implemented by a detection device including a calculation processor, disposed between the DC current source and a load. A digitized temporal signal is obtained on the basis of the electric current provided by the DC current source. A digitized temporal sub-signal is extracted. A bandpass filtering is applied to the digitized temporal sub-signal. The method also includes calculating a statistical value of order four of the filtered digitized temporal sub-signal, and comparing the calculated statistical value of order four with a first statistical threshold. | 01-07-2016 |
20160011249 | SYSTEMS AND METHODS FOR DETECTING AND IDENTIFYING ARCING BASED ON NUMERICAL ANALYSIS | 01-14-2016 |
20160011255 | SYSTEM AND METHOD TO IDENTIFY AN ELECTRICAL COMPONENT ASSOCIATED WITH A POTENTIAL FAILURE INDICATION FROM A PARTIAL DISCHARGE LISTENING DEVICE | 01-14-2016 |
20160011267 | METHOD AND SYSTEM FOR DETERMINING FAILURE WITHIN RESOLVER | 01-14-2016 |
20160011268 | MOTOR FAULT DETECTING METHOD AND MOTOR FAULT DETECTING SYSTEM | 01-14-2016 |
20160018467 | METHOD AND SYSTEM FOR THE DETECTION AND DIAGNOSIS OF FAULTS IN RUNNING ELECTRIC MACHINES - The present invention discloses a method for the detection and diagnosis of faults in running electric machines. The method consists of: i) simultaneously obtaining a current signal and a voltage signal associated with the rotor winding of the electric machine; ii) defining a group of vectors whose components are DC and/or AC values at different separation and amplification levels of the current and voltage signals; iii) simultaneously obtaining a current signal and a voltage signal associated with an emulated fault; iv) defining a group of vectors whose components are DC and/or AC values at different separation and amplification levels of the current and voltage signals associated with an emulated fault; v) determining the variations in the components of the vectors; vi) comparing the vectors that show component variations with the emulated fault vectors; vii) analyzing the variations and comparisons in order to detect whether or not there is at least one type of fault; and viii) reporting the presence or absence of at least one type of fault in the electric machine. | 01-21-2016 |
20160025799 | APPARATUS, METHODS AND SYSTEMS FOR MEASURING AND DETECTING ELECTRICAL DISCHARGE - The invention relates to an apparatus, method and system for measuring and optionally detecting an electrical discharge having a discharge magnitude, wherein the electrical discharge causes a corresponding emission of optical radiation. The apparatus embodies the system and method in accordance with the invention, wherein the method comprises measuring electrical discharge by firstly storing pre-determined calibration data comprising calibrated quantitative measurement values associated with magnitudes of electrical discharge and detector parameters corresponding thereto, the detector parameters being operating parameters associated with the optical detector, receiving and processing a particular detector parameter with the stored calibration data to detect an electrical discharge, and determine a quantitative measurement associated with the magnitude of the detected electrical discharge. | 01-28-2016 |
20160041217 | ON-LINE STATUS DIAGNOSIS DEVICE AND ON-LINE STATUS DIAGNOSIS METHOD FOR ELECTRIC POWER UTILITIES - The present invention is to provide an on-line status diagnosis device for an electric power utilities, in which sampling and data transmission rates are differentiated according to a degree of risk of degradation status data. The on-line status diagnosis device includes a sensor for providing a degradation detection signal of the electric power utilities, a data acquisition unit (DAU) for acquiring and providing degradation detection data, and a communication unit for transmitting the degradation detection data to the outside. The DAU includes an analog-digital converter for acquiring degradation detection data as digital data by converting the degradation detection signal from the sensor into a digital signal, and a microcomputer for determining a degree of risk by comparing the degradation detection data with at least one predetermined risk determination reference value, and outputting a control signal to the analog-digital converter to change a sampling rate and a report rate. | 02-11-2016 |
20160041232 | TOOL EMPLOYING HOMOTOPY-BASED APPROACHES IN FINDING THE CONTROLLING UNSTABLE EQUILIBRIUM POINT IN THE ELECTRIC POWER GRID - The analysis tool employs a computer-implemented algorithm that uses homotopy-based approaches to map the solution from the exit point to the controlling unstable equilibrium point (UEP). The computational time is reduced significantly by using an approximate exit point rather than computing an accurate exit point as it is required in finding the controlling UEPs using traditional transient stability direct methods. In addition, this method eliminates the necessity of computing the minimum gradient point (MGP) which is a key element in using Newton methods. These properties provide an advantage to homotopy-based approaches over traditional iterative methods in terms of both speed of computation and reliability of finding solutions. | 02-11-2016 |
20160052076 | DEVICES AND METHODS FOR ANALYZING SPATTER GENERATING EVENTS - A method for monitoring a spatter generating event during a welding application. The method includes capturing data that corresponds to a welding current of the welding application. The method also includes detecting parameters associated with a short circuit from the captured data. The method includes analyzing the detected parameters to monitor the spatter generating event during the welding application. | 02-25-2016 |
20160077148 | SIGNAL PROCESSING DEVICE, RADIATION DETECTING DEVICE, AND SIGNAL PROCESSING METHOD - According to an embodiment, a signal processing device includes a first integrator, a second integrator, a switcher, and a calculator. The first integrator is configured to integrate a current represented by a reference waveform equivalent to a normal waveform in a case of no pileup phenomenon regarding the current to calculate a first electrical charge. The second integrator is configured to integrate a current output from a photoelectric converter to calculate a second electrical charge. The switcher is configured to, when a pileup phenomenon has occurred, perform switching either to a state in which the first and second electrical charges are output or to a state in which the first electrical charge and a reference charge are output. The calculator is configured to calculate a first difference charge between the first and second electrical charges, and calculate a second difference charge between the first electrical charge and the reference charge. | 03-17-2016 |
20160077163 | METHOD AND APPARATUS FOR DEFECT PRE-WARNING OF POWER DEVICE - A method for defect pre-warning of a power device may comprise processing measurement data regarding components of the power device based on predetermined severity criteria, to obtain severities of one-of monitoring indexes related to defects of the components. Weights of the monitoring indexes with respect to the defects are determined based on effectiveness of the monitoring indexes for the defects. A defect probability that at least one of the components has each of at least one of the defects is estimated based on the severities and weights. Some embodiments may achieve more reliable defect probability estimation and in some embodiments defective component probability and/or device healthy may be estimated. Based on the reliable information, it may facilitate to arrange the maintenance before defects involve into a fault and assess a risk of power device operation and control, thereby improving reliability of the power device. | 03-17-2016 |
20160077164 | FAILURE SIGN DIAGNOSIS SYSTEM OF ELECTRICAL POWER GRID AND METHOD THEREOF - A diagnosis data calculation unit | 03-17-2016 |
20160084895 | DETECTING, LOCALIZING AND RANKING COPPER CONNECTORS - A method for detecting failures in electrical cable assemblies is provided. A cable test instrument obtains frequency domain data representing electrical characteristics of a cable link under test. A number of connectors in the cable link under test is determined based on the obtained frequency domain data. An estimated location of each of the connectors along the length of the cable link under test is determined by the cable test instrument. The connectors are ranked in accordance with their respective contribution to detected failures in the cable link under test. | 03-24-2016 |
20160087490 | System for the Monitoring and Maintenance of Remote Autonomously Powered Lighting Installations - A system of monitoring and/or maintaining remotely located autonomously powered lights, security systems, parking meters, and the like is operable to receive data signals from a number of the devices, and provide a comparison with other similar devices in the same geographic region to detect a default condition of a particular device, and/or assess whether the defect is environmental or particular to the specific device itself. The system includes memory for storing operating parameters and data, and outputs modified control commands to the devices in response to sensed performance, past performance and/or self-learning algorithms. The system operates to provide for the monitoring and/or control of individual device operating parameters on an individual or regional basis, over preset periods. | 03-24-2016 |
20160091548 | METHOD FOR ESTIMATING A VOLTAGE AND DEVICE ENABLING SUCH AN ESTIMATION - A method of estimating a periodic voltage, such as an input voltage, of one of the phases of an electrical circuit with at least two phases including a voltage sensor for each of its phases, each voltage sensor being capable of outputting a signal representative of at least a part of period of the periodic voltage of the phase. The method including the following steps: measure the representative signal starting from the voltage sensor; amplify the representative signal by a gain determined in the absence of an electrical fault in the circuit and based on a reference voltage common to all phases in the electrical circuit ( | 03-31-2016 |
20160091553 | SYSTEMS AND METHODS FOR ARC FLASH HAZARD ASSESSMENT - An arc flash hazard assessment method includes storing electrical equipment data in memory, defining an arc flash model function based on the data, and estimating the model function based on a weighted average of interpolated and extrapolated values. The electrical equipment data may include an operating voltage, a fault current, and a clearing time. The model function is defined for at least three reference voltages V | 03-31-2016 |
20160091569 | METHOD AND SYSTEM FOR DETERMINING CORE LOSSES IN A PERMANENT MAGNET SYNCHRONOUS MOTOR - A method and system for determining core losses in a permanent magnet synchronous motor, comprising a measurement of the losses of the motor with the motor not connected to a load, and a deduction of the core losses of the motor from the losses of the motor. The motor is placed in an over-fluxing state during the measurement of the losses. | 03-31-2016 |
20160116520 | PARTIAL DISCHARGE SIGNAL PROCESSING METHOD AND APPARATUS EMPLOYING NEURAL NETWORK - A partial discharge signals processing method includes: setting a first discrimination criterion among the following criteria: discharge signals acquisition, discharge signals noise filtering, and discharge signals classification; providing a plurality of pulse waveforms associated with detected partial discharge waveform signals; defining at least a first reference pulse waveform in accordance with the first criterion; performing a first training of a neural network module based on the at least a first reference pulse waveform to produce a similarity index adapted to selectively assume a first value and a second value representative of a similarity/non similarity of an input pulse waveform with the at least a first reference pulse waveform, respectively; comparing the plurality of pulse waveforms with the at least a first reference pulse waveform by means of the neural network module to obtain first similarity index values; and memorizing/rejecting each compared pulse waveform on the basis of the obtained first similarity index values and on the second discrimination criterion. | 04-28-2016 |
20160116527 | STOCHASTIC AND TOPOLOGICALLY AWARE ELECTROMIGRATION ANALYSIS METHODOLOGY - A computer-implemented method for analyzing a system comprising a plurality of components is described herein according to certain aspects. The method comprises simulating the system cascading through a plurality of failures until the system fails to meet a system specification, each of the failures corresponding to a failure of one of the components. The method also comprises estimating a time to failure of the system based on a last one of the plurality of failures. | 04-28-2016 |
20160124031 | SMART MULTI-PURPOSE MONITORING SYSTEM USING WAVELET DESIGN AND MACHINE LEARNING FOR SMART GRID APPLICATIONS - A new voltage-based index is formulated in the time-frequency domain (using wavelets) and the energy of the wavelet coefficients associated with the change in mean voltage is used to extract the islanding features rather than using the energy of the wavelet coefficients themselves as in the prior art. Procrustes analysis is used to design the new wavelet, namely WGM1.0, by only satisfying the minimum properties on the wavelet filter of length 6 (i.e., six coefficients). Machine learning is then used to develop islanding classification models based on the calculated voltage index and the new wavelet. Two classifiers are used for the present invention: Support Vector Machine (SVM) and Ensemble Tree classifier (ETC). | 05-05-2016 |
20160131693 | POWER-CABLE GROUND CURRENT SELF-ADAPTIVE MONITORING METHOD - The present invention provides a power-cable ground current self-adaptive monitoring method. The steps including configuring a sample baseline, determining an impact factor set of the sample data, sampling real-time data of ground current by a power-cable ground current monitoring system, perform digital filtering on the sampled real-time data of ground current, applying a self-adaptive method to process the filtered sample data, and uploading the processed sample data to a backend monitoring device for real-time monitoring. The present invention may solve high energy loss and low information amount problems. The power consumption of monitoring device may be reduced by more than 50%, and server resource occupancy percentage may be lowered by about 20%. Efficiencies of evaluating external insulation status of the are enhanced. The present invention provides a novel grade ranking criterion, which may be dynamically corrected based on actual power-line operations, and reduces objective interferences during value determination process. | 05-12-2016 |
20160131698 | METHOD FOR INCREASING THE RELIABILITY OF TRANSDUCERS - A method for increasing the reliability of transducers, having a first and a second IC, the two ICs have exactly the same or substantially the same monolithically integrated circuit components, each with a sensor and a signal contact designed for bidirectional data transmission and a reference contact and a supply voltage contact. A signal generated as a function of the physical quantity sensed by the relevant sensor is applied to the signal contact. The signal of the first IC is compared with the signal of the second IC by a monitoring device, and then the result of the comparison is communicated to an enable device, and the signal of the first IC is sent by an enable device to the control unit if both signals lie in a predefined useful band. | 05-12-2016 |
20160154061 | METHOD OF ASSESSING RISK OF POWER SYSTEM WITH HIGH PENETRATION OF WIND POWER | 06-02-2016 |
20160154065 | ASSESSMENT METHOD | 06-02-2016 |
20160161536 | ENERGY PERFORMANCE METRIC IN HYDROCARBON-PRODUCING FACILITIES - A hydrocarbon-producing facility includes a first energy subsystem to receive input energy from an energy source and byproduct energy generated by a second energy subsystem connected to the first energy subsystem, the first energy subsystem to perform work using the input energy and the byproduct energy. A method of analyzing energy performance in the hydrocarbon-producing facility includes identifying the byproduct energy received by the first energy subsystem from the second energy subsystem over a duration, determining energy intensity indices at corresponding time instants during the duration for the first energy subsystem, each energy intensity index based on the input energy, the byproduct energy, and output parameters of the work performed using the input energy and the byproduct energy, comparing the energy intensity indices to each other, and determining an efficiency of the first energy subsystem in response to comparing the energy intensity indices to each other. | 06-09-2016 |
20160161541 | APPARATUS AND METHOD FOR DIAGNOSING STATE OF POWER CABLE AND MEASURING REMAINING LIFE THEREOF USING VLF TD MEASUREMENT DATA - Disclosed herein are an apparatus and method for diagnosing the state of a power cable and measuring the remaining life thereof using VLF TD measurement data, and for determining a replacement time of a power cable using a 3D matrix exhibiting reproducibility of diagnosis of the state of the power cable. The apparatus and method for diagnosing the state of a power cable and measuring the remaining life thereof according to the present invention includes a Weibull modeling unit, a distance limiting unit, a data type classifying unit, a quantity representing unit, a normalization unit, a 3D constructing unit, a risk level calculating unit, and a remaining life measuring unit. | 06-09-2016 |
20160169954 | METHOD AND SYSTEM FOR PERFORMING ELECTRICAL TESTS ON COMPLEX DEVICES | 06-16-2016 |
20160178685 | SYSTEMS AND METHODS FOR IDENTIFYING FAULTY TOUCH PANEL HAVING INTERMITTENT FIELD FAILURES | 06-23-2016 |
20160187406 | METHOD AND SYSTEM FOR IDENTIFYING LIGHTNING FAULT AND THE TYPE THEREOF IN THE OVERHEAD TRANSMISSION LINE - A method for identifying a lightning fault of an overhead transmission line (OTL) comprising determining a polarity of a travelling wave of each of three ABC phases subsequent to a single phase outage of the OTL. If the polarity of each phase is the same, the outage is a lightning fault and its type a back flashover; if not the same, proceed to the second step to determine a current change rate R of the fault phase. If R is larger than a threshold value, the outage is a lightning fault and its type a shielding failure; otherwise, the outage is a single-phase grounding fault. A system for identifying the lightning fault which comprises successively at least a group of fault detectors, a wireless communication module, a remote monitoring master station which adopts the above method to determine the fault type of the overhead transmission line. | 06-30-2016 |
20160195583 | FAULT DIAGNOSING METHOD BASED ON STANDARD DEVIATION OF DETAIL COEFFICIENTS FOR POWER CONVERTER OF SWITCHED RELUCTANCE MOTOR | 07-07-2016 |
20160202303 | USE OF VOLTAGE PROBE TO MEASURE HIGH VOLTAGE AMPLITUDE AND PHASE TO IMPROVE ON-LINE BUSHING MONITORING RELEVANCE | 07-14-2016 |
20190146035 | Method for Synchronizing a Checking Apparatus, and a Checking Apparatus and a Composite System Comprising at Least Two Checking Apparatuses | 05-16-2019 |