Entries |
Document | Title | Date |
20100289516 | MALFUNCTION DETERMINING APPARATUS AND MALFUNCTION DETERMINING METHOD FOR CHARGING SYSTEM - An ECU executes a program including a step of determining that a pilot wire for transferring a pilot signal CPLT, which is output when a charging cable is connected to a plug-in hybrid vehicle and an external power source, to the ECU is broken, when output of the pilot signal CPLT is currently stopped and a voltage VAC of the external power source (absolute value of voltage VAC) detected by a voltmeter provided within the plug-in hybrid vehicle is greater than zero. | 11-18-2010 |
20100308857 | Method and electric circuit for testing a power producer or a power consumer that can be connected to an electric power grid - Described is an electric circuit which is intended, in particular, for the testing of a power producer in a wind power plant. The power producer is connected to a terminal point and is provided with a converter circuit which can be used to influence a voltage that is present at the terminal point. Also provided is a series connection configured with a choke coil and a first switch and connected to the terminal point. In at least one embodiment, a control and/or regulating system is provided for influencing, in a time-synchronized manner, on the one hand the converter circuit, such that the voltage at the terminal point transitions to a desired value and, on the other hand, the closing of the first switch. | 12-09-2010 |
20100327901 | POWER SUPPLY TESTING SYSTEM - A testing system for testing a conversion efficiency of a power supply unit (PSU) includes a power meter, a plurality of switches, a multimeter, a microcontroller unit, and a data processing device. The power meter is utilized to measure an input power supplied to the power supply unit. The multimeter is utilized to measure an output power of PSU. The microcontroller unit is configured for automatically switching the plurality of switches for enabling the multimeter to measure the output power of power supply. The data processing device is utilized to read data measured from the power meter and the multimeter and calculate a conversion efficiency of the PSU. | 12-30-2010 |
20110018578 | METHODS, SYSTEMS AND APPARATUS FOR DETECTING ABNORMAL OPERATION OF AN INVERTER SUB-MODULE - Methods and apparatus are provided for determining whether one or more inverter sub-modules of an inverter module is operating properly. Amplitude of each stator current signal is regularly measured. For each current signal, a positive counter counts a number of consecutive times the amplitude of that current signal is less than a positive current threshold, while a negative counter counts a number of consecutive times the amplitude of that current signal is greater than a negative current threshold. If the positive counter or the negative counter exceeds a maximum count, it is determined that an inverter sub-module is operating abnormally. | 01-27-2011 |
20110018579 | AUXILIARY POWER UNIT DIAGNOSTIC TOOL - A diagnostic tool for an auxiliary power unit comprising an alternating current generator having an exciter winding and an output winding and an automatic voltage regulator for providing control over the excitation winding of the generator includes a harness with plug connectors allowing the diagnostic tool to be directly introduced between the generator and automatic voltage regulator replacing the conventional connections without affecting operation of the auxiliary power unit. The diagnostic tool has a plurality of multimeters between the automatic voltage regulator and the alternating current generator providing voltage readings across and resistance readings for the generator's stator exciter winding and main and auxiliary output windings. A protocol relates voltage and resistance readings taken with the multimeters when the auxiliary power unit is on and off to possible faults in the generator or with the automatic voltage regulator. | 01-27-2011 |
20110018580 | POWER SUPPLY APPARATUS, POWER SUPPLY UNIT DIAGNOSTIC APPARATUS, AND METHOD FOR CONTROLLING POWER SUPPLY APPARATUS - A power supply apparatus includes a power supply part including a plurality of power supply units, a first comparison unit comparing a first voltage of the power supply part with a first reference value, a directing unit issuing a voltage fall direction to one of the power supply units so as to lower a voltage setting value when the first voltage is higher than the first reference value, a second comparison unit comparing a second voltage of the power supply unit obtained after the voltage fall direction is issued with the second reference voltage value, and a determining unit determining that the power supply unit to which the voltage fall direction issued corresponds to a failure unit, when the second comparison unit detects that the second voltage obtained after the voltage fall direction is issued fell in the voltage level lower than the second reference voltage. | 01-27-2011 |
20110025367 | ENERGY FEEDBACK DEVICE FOR THE WARM-UP TEST OF A POWER SUPPLY - This invention relates to an energy feedback device for the warm-up test of a power supply, which includes a power supply, a current limiter, a transformer and a selector. Moreover, the power supply is a target load tested by a warm-up procedure; external input power enters the selector, and the other end of the selector is electrically connected to the power supply. The current limiter is used to adjust the warm-up power consumed by the load of the power supply under testing. One end of the current limiter is electrically connected to another end of the power supply, and another end of current limiter is electrically connected with the voltage adapter; and another end of the voltage adapter is electrically connected to another end of the selector. Therefore, the device of this invention can effectively provide enhancing the efficiency of power is consumption, over-current protection and multiple application of energy feedback. | 02-03-2011 |
20110025368 | POWER SOURCE DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A power source device includes a main power source for outputting a direct current voltage with a specific value; a monitoring unit connected to the main power source for comparing the direct current voltage with a reference voltage to monitor whether a malfunction occurs in the main power source; and a monitoring display unit connected to the monitoring unit. The monitoring unit includes a comparison unit for comparing the direct current voltage with the reference voltage, and a monitoring control unit for detecting a signal of the comparison unit and for storing and displaying the direct current voltage on the monitoring display unit when the malfunction occurs in the main power source. | 02-03-2011 |
20110043244 | ON-LINE TIME DOMAIN REFLECTOMETER SYSTEM - A number of TDR systems and testing methods are provided that improve the quality and accuracy of information collected when propagating a signal along a length of cable in order to pinpoint specific anomalies. One or more of the TDR systems includes, for example, a computing device, a pulse generator, and at least one capacitive test sensor. The at least one capacitive test sensor transmits/receives pulses to/from a power system component, such as an insulated power cable, in a capacitive manner. | 02-24-2011 |
20110068819 | MULTIRANGE LOAD DETECTION CIRCUITRY - Load detection circuitry is provided that may be used to monitor an output line. The load detection circuitry may include one or more current sensing resistors. A monitor circuit can measure voltages across the current sensing resistors to determine whether current is flowing through a load connected to the output line. In configurations with multiple different current sensing resistors, the monitor circuit can determine the amount of current that is flowing through the load based on the measured voltages. A switch may be interposed between the current sensing resistor and the output line. A current-limited voltage regulator may supply a voltage to the output line. The monitor circuit may periodically open the switch and monitor resulting voltage changes on the output line to determine whether an electronic device or other load is attached. Opening of the switch may be inhibited whenever current is sensed through a current sensing resistor. | 03-24-2011 |
20110115520 | CAPACITOR TEST METHOD AND CIRCUIT THEREFOR - In one embodiment, a closed loop control system is caused to operate in an open loop configuration. At some time while operating in the open loop configuration the system detected the presence or absence of a.c. signals in an output signal of the system in order to detect the presence or absence of a failure of a control loop element, such as an output capacitor. | 05-19-2011 |
20110121855 | SYSTEM FOR TESTING POWER SUPPLY PERFORMANCE - A system for testing a DC power supply performance includes a test apparatus for testing the DC power supply, and a control circuit electrically coupled to the DC power supply and test apparatus. The control circuit includes a microcontroller, a switch control circuit, and a switch circuit controlled by the switch control circuit. The microcontroller is configured for outputting control signals. The switch control circuit is configured for receiving the control signals, and is powered on according to the corresponding control signals. The switch circuit is capable of turning on when the switch control circuit is powered on. The DC power supply output terminals are coupled electrically to the test apparatus via the switch circuit. The test apparatus is configured for reading voltage values at the DC power supply corresponding output terminals, and outputting a feedback signal to the microcontroller when the testing is complete. | 05-26-2011 |
20110140732 | CIRCUIT FOR TESTING INRUSH CURRENT - A circuit is configured for testing an inrush current of a power supply. The circuit includes a capacitor module, a voltage meter, a semiconductor switch, and a current meter. The capacitor module is connected to an power source for storing electric charge. The voltage meter is connected to the capacitor module for measuring a voltage across the capacitor module. The semiconductor switch is capable of connecting the capacitor module to the power supply and being closed when the voltage across the capacitor module reaches a predetermined value. The current meter is capable of measuring the inrush current at the time the power supply is powered on. | 06-16-2011 |
20110156743 | SYSTEM FOR TESTING POWER SUPPLY PERFORMANCE - A system for testing a DC power supply performance includes a load module electrically coupled to the DC power supply, a switch module electrically coupled to the DC power supply, a control module electrically coupled to the load module and the switch module respectively, and an indication module electrically coupled to the control module. The control module includes a judge module and a comparison module. The judge module is configured for receiving DC voltage signals from the DC power supply; wherein the judge module is capable of turning on when the DC power supply is normal. The comparison module is configured for comparing the DC voltage signals with a reference voltage; wherein the comparison module is capable of outputting a control signal when the DC voltage signals are greater than the reference voltage. The indication module is configured for receiving the control signal and indicating status of the DC power supply. | 06-30-2011 |
20110156744 | LINEAR VOLTAGE GENERATING DEVICE FOR TESTING PERFORMANCE OF POWER SUPPLIES - A linear voltage generating device for testing performance of a power supply includes a filter circuit, an analog to digital (A/D) conversion circuit, and an amplifier circuit. The filter circuit is configured for receiving a pulse width modulation (PWM) signal, and comparing the PWM signal with a reference voltage to output a filtered PWM signal. The A/D conversion circuit is configured for receiving the filtered PWM signal, and converting the filtered PWM signal to a linear digital signal. The amplifier circuit is configured for receiving the linear digital signal, and outputting an amplified linear digital signal to an electric load electrically coupled to the power supply. | 06-30-2011 |
20110156745 | ELECTRONICS TESTER WITH A SIGNAL DISTRIBUTION BOARD AND A WAFER CHUCK HAVING DIFFERENT COEFFICIENTS OF THERMAL EXPANSION - The invention relates to a tester apparatus of the kind including a portable supporting structure for removably holding and testing a substrate carrying a microelectronic circuit. An interface on the stationary structure is connected to the first interface when the portable structure is held by the stationary structure and is disconnected from the first interface when the portable supporting structure is removed from the stationary structure. An electrical tester is connected through the interfaces so that signals may be transmitted between the electrical tester and the microelectronic circuit to test the microelectronic circuit. | 06-30-2011 |
20110163776 | POWER SUPPLY TESTING SYSTEM - A system for testing a conversion efficiency of a power supply unit includes a power meter, a plurality of switches, a multimeter, a microcontroller unit (MCU), a computer, and a signal conversion circuit for communicatively connecting the MCU to the computer. The power meter is capable of measuring an input power supplied to the power supply unit. The switches are powered on/off according to a sequence predetermined by the computer. The multimeter is configured to measure an output power of the power supply. The computer is capable of reading data measured from the power meter and the multimeter and calculating a conversion efficiency of the power supply unit. | 07-07-2011 |
20110163777 | METHOD FOR PRODUCTION OF A FAULT SIGNAL, AND AN ELECTRICAL PROTECTIVE DEVICE - A fault signal indicates a single-pole or a double-pole fault in a three-phase electrical power grid which occurred during a present electric oscillation in the electrical power grid. The method assures that single-pole or double-pole faults occurring during oscillation can be detected with high reliability in that a symmetry signal is produced during the oscillation, which indicates whether the oscillation is symmetrical or unsymmetrical, and the phases of the electrical power grid are checked for an existing fault, wherein the symmetry signal is used for carrying out the check. The fault signal is produced if a fault was detected during the check. A protective device has an accordingly equipped control unit. | 07-07-2011 |
20110169521 | TESTING SYSTEM FOR POWER SUPPLY UNIT - A testing system for a PSU includes a test chamber and a control device. The test chamber includes a first partition with the PSU accommodated therein and a second partition with an electric load accommodated therein. The PSU is electrically connected to the electric load. The control device includes a microcontroller unit (MCU). The MCU is connected to a setting circuit and a temperature sensing circuit. The setting circuit is configured to set one of predetermined parameters. The temperature sensing circuit is capable of sensing temperature in the test chamber. The MCU is capable of automatically controlling a predetermined temperature in the test chamber and presetting a test time for testing the PSU. | 07-14-2011 |
20110175640 | SYSTEM FOR TESTING POWER SUPPLY PERFORMANCE - A system for testing a DC power supply performance includes a comparison module, a judge module, and an alarm module. The comparison module receives DC voltage signals from the DC power supply, compares the DC voltage signals with a reference voltage respectively, and outputs a voltage level signal when the DC power supply is normal. The judge module receives the voltage level signal, and outputs a control signal according to the voltage level signal. The alarm module receives the control signal, and indicates status of the DC power supply according to the control signal. | 07-21-2011 |
20110187402 | POWER SUPPLY TESTING SYSTEM - A system includes a plurality of power supply units to be tested, an electric load, a power meter, a multimeter, and a computer. Each of the plurality of power supply units has an input terminal connected to an AC power source via a switch module and an output terminal capable of outputting a plurality of power rails to an output bus via the switch module. The electric load is connected to the output bus for receiving the plurality of power rails. The power meter is configured for measuring an input power of each of the plurality of power supply units. The multimeter is configured for measuring an output power of each of the plurality of power supply units. The computer configured to calculate a conversion efficiency of each of the plurality of the power supply units. | 08-04-2011 |
20110187403 | SYSTEM FOR TESTING POWER SUPPLY PERFORMANCE - A system for testing DC power supply performance includes a control circuit electrically connected to the DC power supply, a test device, and a control device electrically connected to the test device. The control circuit includes a micro controller capable of outputting control signals, a switch control module, and a switch module. The switch control module receives the control signals and powers up according to the control signals. The switch module is electrically connected to the DC power supply input and output terminals respectively, under control of the switch control module. The test device is electrically connected to the switch module and is electrically connected with the DC power supply input and output terminals according to the control signals. The test device reads voltages at the DC power supply input and output terminals which are transmitted to the control device. | 08-04-2011 |
20110187404 | METHOD OF DETECTING FAILURE AND MONITORING APPARATUS - A method of detecting a failure in an information processing apparatus is provided. The method includes detecting at least one of a power supply failure and a unit failure, monitoring the detected unit failures, and determining a detected unit failure for a first unit is erroneous if the monitoring indicates another of the units receiving power from a same power supply system as the first unit has also detected a unit failure. The power supply failure indicates a failure associated with a power supply system affecting more than one of the units, and the unit failure indicates a failure of one of the units. | 08-04-2011 |
20110199115 | FAILURE DIAGNOSIS CIRCUIT, POWER SUPPLY DEVICE, AND FAILURE DIAGNOSIS METHOD - A failure diagnosis circuit is provided with: a voltage detection unit that detects a terminal voltage of an electricity storage unit; a current detection unit that detects a current flowing in the electricity storage unit; a SOC calculation unit that calculates a SOC of the electricity storage unit on the basis of the current detected by the current detection unit; a charging stopping unit that stops charging of the electricity storage unit when the SOC calculated by the SOC calculation unit reaches a preset determination value; and a failure detection unit that determines that a failure has occurred in the voltage detection unit when a variation of the terminal voltage, which is detected by the voltage detection unit, after the charging is stopped by the charging stopping unit differs from a predicted variation when the SOC of the electricity storage unit is at the determination value. | 08-18-2011 |
20110221467 | AC POWER SUPPLY MEASURING CIRCUIT WITH VOLTAGE PROTECTING FUNCTION - An alternating current (AC) power supply measuring circuit includes a voltage dividing circuit, a measuring integrated circuit (IC), a control board, and a first power rectifying circuit. The voltage dividing circuit receives an AC voltage signal and divides the AC voltage signal to a first voltage dividing signal and a second voltage dividing signal. The measuring IC receives the first and second voltage dividing signals to obtain an AC voltage measuring signal. The control board receives the AC voltage measuring signal and processes the AC voltage measuring signal. The first power rectifying circuit provides a floating ground signal to the voltage dividing circuit. | 09-15-2011 |
20110234255 | FAULT DETECTION CIRCUITS FOR SWITCHED MODE POWER SUPPLIES AND RELATED METHODS OF OPERATION - A circuit for detecting fault conditions in a supply circuit includes a monitoring circuit and a comparator circuit. The monitoring circuit is operable to output a detection signal related to a control signal for the switched mode power supply. The control signal may be configured to operate at least one switch of the supply circuit between alternating activated and deactivated states to supply power to a load. The comparator circuit is operable to compare the detection signal to a range defined by first and second thresholds and output a fault signal according to a relationship of the detection signal to the range over a time period. Related methods of operation are also discussed. | 09-29-2011 |
20110234256 | POWER GENERATION SYSTEM AND SENSING SYSTEM - A power generation system includes a support unit configured to support a power transmission line disposed on a transmission line tower, and a power generation unit. The support unit includes a support line having an end part connected to the power transmission line and a rotary body configured to rotate in a manner cooperating with the support line. The power generation unit is configured to generate electric power in response to rotation of the rotary body caused by movement of the support line resulting from tension of the power transmission line. | 09-29-2011 |
20110241722 | CURRENT DETECTOR - Provided is a current detector which can accurately determine whether or not a transmission current is abnormal in the TDMA system. The sampling is performed on two frames in a regular manner. It is determined that the transmission current (I) is abnormal when the transmission current (I) is detected in all of the 16 slots within the two frames. If it is determined that the transmission current (I) is normal when the transmission current (I) is not detected in anyone of slots. Further, the determination result is decided when the error determination results coincide for N consecutive times. This makes it possible to accurately determine the presence/absence of an abnormality of a transmitting current in the TDMA system. | 10-06-2011 |
20110254582 | SYSTEMS AND METHODS FOR MODULAR TESTING OF CHARGERS - A system and method for testing a charger. A power-end of a charger is received in a power port of a charger tester. An adapter module is received in an adapter port, the adapter module being connected to an adapter-end of the charger. The charger tester is automatically activated to power the charger through the power port in response to the adapter module being received by the adapter port. Performance characteristics of the charger are measured. The performance characteristics of the charger are displayed to a user to indicate functionality of the charger. | 10-20-2011 |
20110267094 | CIRCUIT AND METHOD FOR DETECTING A FAULT ATTACK - A device for detecting a fault attack, including: a circuit for detecting an interruption of a power supply; a circuit for comparing the duration of said interruption with a first threshold; and a counter of the number of successive interruptions of the power supply having a duration which does not exceed the first threshold. | 11-03-2011 |
20110279145 | TESTING DEVICE AND METHOD THEREOF - A testing device for testing a board managing controller (BMC) of a computer motherboard including a power supply, a BMC, and a warning unit, includes a storing module, a voltage adjusting module, and a voltage displaying module. The storing module stores a preset warning voltage and an upper limit voltage larger than the preset warning voltage. The voltage adjusting module is used for adjusting the voltage of the power supply. The voltage displaying module is used for displaying the output voltage of the voltage adjusting module. It indicates the BMC works properly if the warning unit provides warning when the output voltage of the voltage adjusting module is less than the preset warning voltage, or the warning unit is silent when the output voltage of the voltage adjusting module falls between the preset warning voltage and the upper limit voltage. | 11-17-2011 |
20110291695 | MONITORING DEVICE FOR AN ELECTRIC POWER SYSTEM - A monitoring device for an electric power system includes a detection unit and a display unit. The detection unit has a power module, a current detecting module and a transmission module. The power module includes positive and negative electrodes and is coupled to the current detecting module. The current detecting module includes a first switching unit and a second switching unit. The first and second switching units are coupled between the positive and negative electrodes to detect currents on detection points of the electric power system. The transmission module includes a micro-controller unit and a transmission device coupled to the micro-controller unit. The micro-controller unit includes a first end and a second end. The first end is coupled to the first switching unit and the second end is coupled to the second switching unit. The display unit is coupled to the transmission device for receiving signals from the detection unit. | 12-01-2011 |
20120007629 | Method For Detecting A Short-Circuit, And Power Supply Module Implementing Said Method - The present invention relates to a power supply module ( | 01-12-2012 |
20120062272 | METHODS AND APPARATUS TO DETECT VOLTAGE CONDITIONS OF POWER SUPPLIES - Methods and apparatus to detect voltage conditions of power supplies are disclosed. An example power supply monitor to detect fault conditions in a power supply includes a capacitive element communicatively coupled to the power supply, the capacitive element being configured to change state between a collapsed state and an open state in response to the power supply having a first voltage associated with a first fault condition of the power supply; a detector communicatively coupled to the capacitive element to detect a voltage spike generated from the state change of the capacitive element; and a signal generator to generate a fault signal in response to the voltage spike to indicate the power supply being in the first fault condition. | 03-15-2012 |
20120062273 | PDU TESTING APPARATUS - A power distribution unit (PDU) testing apparatus includes a main power plug, a number of branch power plugs, a main switch, a number of branch switches, and a number of loads. The main switch and the branch switches are single-pole double-throw switches. A first terminal of the main power plug is connected to the first throw of the main switch. The second throw of the main switch is idle. The pole of the main switch is connected to the second throws of the branch switches. The first throws of the branch switches are respectively connected to first terminals of the branch power plugs. Second terminals of the branch power plugs are connected a second terminal of the main power plug. The poles of the branch switches are respectively connected to first terminals of the loads. Second terminals of the loads are connected to the second terminal of the main power plug. | 03-15-2012 |
20120105097 | AUTOMATED EMERGENCY POWER SUPPLY SYSTEM (EPSS) TEST REPORTING CRITICALITY OF EPSS TEST FAILURE - An automated emergency power supply system (EPSS) and testing solution that records generator load values and engine exhaust temperature values to evaluate whether an EPSS test satisfies legislated test criteria. The EPSS test is carried out under software control, which initiates a test by instructing an automatic transfer switch (ATS) to change its status to a test status, causing the essential loads to be powered by a generator instead of a main utility power source. Power monitors record the ATS and generator status during the test as well as electrical parameter data from the ATS and generator and exhaust temperature data and other engine parameter data from the generator. When the test is concluded, the ATS is instructed to return the status to normal so that power delivery is resumed from the main power source. The electrical and engine parameter data is analyzed and compared against legislated test criteria to determine a pass/fail result of the EPSS test. | 05-03-2012 |
20120126847 | POWER SUPPLY MONITOR - Power supply variations and jitter are measured by monitoring the performance of a ring oscillator on a cycle-by-cycle basis. Performance is measured by counting the number of stages of the ring oscillator that are traversed during the clock cycle and mapping the number of stages traversed to a particular voltage level. Counters are used to count the number of ring oscillator revolutions and latches are used to latch the state of the ring oscillator at the end of the cycle. Based on the counters and latches, a monitor output is generated that may also incorporate an adjustment for a reset delay associated with initializing the ring oscillator and counters to a known state. | 05-24-2012 |
20120133389 | METHODS AND APPARATUS FOR TESTING ELECTRIC POWER DEVICES - A method of assembling a testing apparatus for a full-power converter assembly includes coupling an electric power supply apparatus to an electric power grid. The method also includes coupling a direct current (DC) generation apparatus to the electric power supply apparatus. The method further includes coupling an electric power grid simulation device to the DC generation apparatus. The method also includes coupling a full-power converter assembly test connection to the electric power grid simulation device. | 05-31-2012 |
20120139576 | Arrangement and method for testing an electric power generation system - An arrangement is provided for testing an electric power generation system, for example, a wind turbine system, which is to be connected to a utility grid having a predetermined first impedance. The arrangement includes an input terminal for connecting the arrangement to an output terminal of the power generation system. The arrangement further includes a grid terminal for connecting the arrangement to the utility grid. The arrangement further includes an electrical adjustment system connected between the input terminal and the grid terminal. The electrical adjustment system is adapted to adjust an impedance at the input terminal to the predetermined first impedance, when an auxiliary grid having a second impedance different from the first impedance is connected at the grid terminal. A corresponding method is also provided. | 06-07-2012 |
20120161809 | POWER SUPPLY TESTING DEVICE AND COMPUTER SYSTEM HAVING SAME - A power supply testing device includes an input end electrically connected to a power supply, an output end electrically connected to a motherboard of a computer, and a testing interface unit electrically connected between the input end and the output end. The testing interface unit includes a number of testing connector groups each corresponding to a voltage of output current of the power supply. Each of the test connector groups is configured for parameters testing of the corresponding voltage from the output current. | 06-28-2012 |
20120169368 | TEST CIRCUIT OF SOURCE DRIVER - A test circuit of a source driver is disclosed. The test circuit includes a voltage selector and at least one digital-to-analog converter (DAC). The voltage selector has a plurality of first output terminals. The voltage selector outputs a first voltage at one of the first output terminals in a sequential order according to a selection signal and outputs a second voltage at the other first output terminals. Each of the at least one DACs has a plurality of the input terminals respectively coupled to the first output terminals and also has a second output terminal. The DAC transmits the first voltage received by one of the input terminals to the second output terminal in a sequential order according to the selection signal. | 07-05-2012 |
20120182038 | Characterization of Electrical Power Distribution Systems Using Characterization Matrices - Embodiments of methods and apparatuses for characterizing an electrical power distribution system are disclosed. One method includes applying a plurality of test signals to a first plurality of test points of the electrical power distribution system, measuring a plurality of response signals at a second plurality of test points of the electrical distribution system, deriving a characterization matrix for the electrical power distribution system from the plurality of test signals and response signals, and characterizing the electrical power distribution system based on the derived characterization matrix. | 07-19-2012 |
20120182039 | SYSTEMS AND METHODS FOR TESTING POWER SUPPLIES - A system and method for testing a power supply. A selection of one or more power supplies to test is received. A tester is automatically configured to test the one or more power supplies utilizing test parameters associated with the selection. A power-end of each of the one or more power supplies is received in power ports of the tester. An adapter-end of each of the one or more power supplies is received in adapter ports of the tester. The one or more power supplies are automatically tested utilizing test parameters. Performance characteristics of the loop one or more power supplies are measured during testing. Indications are given whether each of the one or more power supplies past the testing. | 07-19-2012 |
20120242366 | DIAGNOSTIC APPARATUS FOR ERRONEOUS INSTALLATION OF POWER STORAGE STACKS AND VEHICLE - A diagnostic apparatus for erroneous installation of power storage stacks includes a first connector portion included in a first power storage stack, a second connector portion included in a second power storage stack capable of connection to the first power storage stack, and a third connector portion included in a third power storage stack which should be prohibited from connection to the first power storage stack, wherein the first connector portion and the second connector portion provides a first circuit when they are connected to each other, and the first connector portion and the third connector portion provides a second circuit when they are connected to each other, the second circuit having a different circuit configuration from that of the first circuit. | 09-27-2012 |
20120256652 | System and Method for Modulating a Power Supply in a Relay Test System - A system and method are provided for using a class H amplifier in a tester for testing protective relaying equipment, particularly useful in conducting end to end testing. The class H amplifier is configured to provide separation between the amplifier and the power supply of the tester using a DSP which also offers flexibility for programming algorithms to realize efficiencies in matching the waveform to the output rail. End to end testing is also improved by including expected results for the test case used by the tester to enable the tester to determine how close the results are to what is expected. This offers time savings and is less prone to error in that the expected results can be predetermined by a qualified/experienced professional. | 10-11-2012 |
20120286820 | METHODS TO DETECT A SINGLE POINT OF FAILURE - A method of detecting a single point of failure includes: placing a portion of a machine being monitored by a plurality of monitoring devices in a first position; causing the portion to cycle to a second position during a first cycle; measuring a component of electrical power provided by a first power supply unit while the portion cycles during the first cycle; returning the portion to the first position; causing the portion to cycle to the second position during a second cycle; measuring the component of electrical power provided by a second power supply during the second cycle; determining that an amount of the component of electrical power provided during either the first or second cycle is equal to or less than a minimum value; and generating an alarm. | 11-15-2012 |
20130015878 | POWER SYSTEM FAULT ZONE DETECTION - A system, method, and apparatus for power transmission fault zone detection. Each phase of a three-phase current in the power system is monitored, a modal component is determined from the three-phase current, high frequency transients in the modal component are extracted using wavelet packet transformation, and a travelling wave front is detected in the modal component indicating the fault. A wave sign is determined and the signs of two travelling waves are logically combined to determine whether or not the fault is within a protected zone. | 01-17-2013 |
20130027077 | SYSTEMS AND APPARATUS FOR FAULT DETECTION IN DC POWER SOURCES USING AC RESIDUAL CURRENT DETECTION - A fault in a DC power source, such as a battery string or a string of photovoltaic cells, is identified by detecting a change in an AC component of a residual current of the DC power source. In some embodiments, the DC power source is coupled to at least one DC bus and he methods further include generating an AC voltage on the at least one DC bus. For example, the DC power source may be coupled to a modulated DC bus of an uninterruptible power supply (UPS) system comprising an inverter having an input coupled to the DC bus. The inverter may be configured to generate an AC output voltage and the AC component has a frequency that is a harmonic of a fundamental frequency of the AC output voltage, such as a third harmonic of the fundamental frequency of the AC output voltage. | 01-31-2013 |
20130027078 | DETECTION APPARATUS, ELECTRIC POWER RECEIVING APPARATUS, ELECTRIC POWER TRANSMISSION APPARATUS, WIRELESS ELECTRIC POWER TRANSMISSION SYSTEM, AND DETECTION METHOD - A method for wireless power transmission includes obtaining, via a Q-value circuit, first and second voltages at respective first and second nodes of a resonance circuit. The first and second voltages are effective to determine if foreign matter is present in a space affecting wireless power transmission. The method includes controlling a switching section between the Q-value circuit and the resonance circuit such that at least a part of the electric power transmission process occurs at a different time than when the first and second voltages are obtained. | 01-31-2013 |
20130049794 | EXTENDED SYSTEMS AND METHODS FOR TESTING POWER SUPPLIES - A system and method for testing multiple power supplies. Multiple power supplies are received including a power-end and an adapter end for connection to a power supply tester. Programmable loads and test parameters are configured for the power supply tester in response to a user selection. The multiple power supplies are automatically tested utilizing the test parameters. Performance characteristics of the multiple power supplies are measured during testing. The performance characteristics of the multiple power supplies are recorded. Results indicating whether each of the multiple power supplies passed the testing are displayed utilizing one or more displays and light emitting diodes. | 02-28-2013 |
20130082732 | POWER TEST SYSTEM FOR TESTING OPERATION VOLTAGE OF POWER SUPPLY CIRCUIT OF COMPUTER - A power test system is provided for testing an operation voltage of a power supply circuit of a computer. The power test system includes a reference voltage circuit, a comparator circuit, and a display circuit. The reference voltage circuit generates a pair of reference voltages. The pair of reference voltages defines a voltage range therebetween. The comparator circuit receives the pair of reference voltages and the operation voltage, compares the operation voltage with the pair of reference voltages, generates a first signal when the operation voltage is within the voltage range, and generates a second signal when the operation voltage exceeds the voltage range. The display circuit illuminates a first color light in response to the first signal, and illuminates a second color light in response to the second signal. | 04-04-2013 |
20130093456 | TESTING DEVICE FOR SOLID OXIDE FUEL CELL - A testing device for solid oxide fuel cell (SOFC) is disclosed. The testing device which combines the original cell housing with a four-point probe equipment is set for measuring SOFC MEA. The current collectors on anode and cathode in the original cell housing are respectively replaced by four independent probe units. They are not only to collect current but also to become measuring probes. Therefore, the lateral impedance of anode and cathode can be measured. Furthermore, the local characteristics are examined by open circuit voltage (OCV), I-V curve, and electrochemical impedance spectroscopy (EIS) measurements. The results show that the lateral impedance is substantially varied with temperatures. The distributions of OCV, current density, EIS and cell voltage in long-term test at the center of the cell are different from the edge. | 04-18-2013 |
20130141136 | METHOD AND APPARATUS FOR PARASITIC CURRENT DETECTION - The invention relates to a method for parasitic current detection in a power supply system, which comprises at least one electrical unit, a power grid having power paths for supplying the unit, and a central electrical feed apparatus for feeding electrical power into the power grid, wherein the feed apparatus is connected to a first of the power paths, at which a reference potential is present, and is connected to at least a second of the power paths, at which a potential for generating an operating current through the unit is present, wherein the first power path is earthed by means of a defined first earthing branch of a connecting portion of the first power path, said connecting portion being connected directly to the feed apparatus and being otherwise unbranched. The invention further relates to an apparatus for carrying out the method. | 06-06-2013 |
20130169309 | METHOD OF DETECTING INSTABILITY IN ISLANDED ELECTRICAL SYSTEMS - Systems and methods for evaluating the stability of an islanded electrical system (off-grid) using high-speed frequency measurements of the electrical signal supplied by an alternate power source in the islanded electrical system. Additional inputs may include status signals from an automatic transfer switch, a generator, and loads within the islanded electrical system. The high-speed frequency measurements have a resolution sufficient to enable analysis of any combination of the frequency magnitude (e.g., sudden increase), frequency slew rate (e.g., frequency rate of change), frequency rate of recovery (e.g., frequency recovery time), or frequency oscillations (e.g., frequency ringing around the nominal value before settling) to indicate the presence of an actual or impending instability of the islanded electrical system. The frequency referred to herein corresponds to the frequency at which an alternating current supplied by the alternate power source is cycling. | 07-04-2013 |
20130169310 | TESTING CIRCUIT FOR DC-DC CONVERTER - Provided is a testing circuit capable of testing functionality of various DC-DC converters without an inductor. According to the present invention, various electronic elements forming the testing circuit for a DC-DC converter are converted in the same kinds of elements or different elements in one-to-one or one-to-two or more correspondence to electronic elements forming a typical DC-DC converter. When the conversion is performed, the electronic values of the elements may be properly scaled to test the DC-DC converter without consuming high power. Therefore, various problems of the related art are minimized. | 07-04-2013 |
20130187678 | METHOD OF DETECTING A FAULT IN A PERMANENT-MAGNET ALTERNATOR AND POWER SUPPLY DEVICE COMPRISING A DETECTOR MODULE - A method of detecting a failure of an alternator supplying three-phase electricity to a load, the method comprising the steps of determining a duty ratio for each of the phases at the output of the alternator, determining phase differences between the phases at the output of the alternator; and determining the presence of a failure as a function of the phase differences and as a function of a comparison of the duty ratios. A power supply device is also provided for implementing the method. | 07-25-2013 |
20130193998 | Default Current Test Method of Impulse Voltage Mixed High Voltage Direct Current Converter Valve - The test method of this invention is comparatively simpler without high voltages in normal default current tests, high voltages have been replaced by impulse generator employing positive and negative symmetrical voltages mixed with impulse voltages to form asymmetrical forward and reverse high voltages, meanwhile the timing for impulse voltage is flexible, the amplitudes could be continuously adjustable according to specific needs, to make test voltage exactly reach climax upon certain timing, the test is flexible and safe, to be applied to converter valves in different direct currents. | 08-01-2013 |
20130200920 | POWER SUPPLY TEST SYSTEM - A power supply test system for testing reliability of a power supply includes a voltage input circuit, a voltage storage circuit, a voltage output circuit, and a discharge circuit. The voltage input circuit receives a first AC voltage, and converts the first AC voltage to a first DC voltage to charge the voltage storage circuit. The voltage storage circuit receives the first DC voltage, and discharges to the power supply via the voltage output circuit when the voltage storage circuit is fully charged. The voltage storage circuit discharges remaining voltages via the discharge circuit when the test is complete. | 08-08-2013 |
20130222007 | POWER SUPPLY TEST SYSTEM - A power supply test system for testing the reliability of a power supply includes a controlling input module, a signal collecting module, a signal input module, an alarm module, and a display module. The controlling input module inputs a time signal and a test signal in the signal collecting module. The signal collecting module turns on the power supply according to the test signal. When the power supply is turned on, the power supply outputs a power on signal, the signal collecting module records the time the test starts. When the power supply breaks off, the power supply outputs a power off signal, the signal collecting module records the time the power supply breaks off and outputs an alarm signal. The alarm module receives alarm signal and alarms to indicate the test is over. The display module displays the time the test starts and the power supply breaks off. | 08-29-2013 |
20130285696 | ON-CHIP SENSOR FOR MEASURING DYNAMIC POWER SUPPLY NOISE OF THE SEMICONDUCTOR CHIP - An on-chip sensor measures dynamic power supply noise, such as voltage droop, on a semiconductor chip. In-situ logic is employed, which is sensitive to noise present on the power supply of functional logic of the chip. Exemplary functional logic includes a microprocessor, adder, and/or other functional logic of the chip. The in-situ logic performs some operation, and the amount of time required for performing that operation (i.e., the operational delay) is sensitive to noise present on the power supply. Thus, by evaluating the operational delay of the in-situ logic, the amount of noise present on the power supply can be measured. | 10-31-2013 |
20130293257 | TESTING SYSTEM FOR POWER SUPPLY UNIT - A testing system for testing a power supply unit, includes a testing board, an electronic load board, and a capacitor choice circuit. The testing board is connected to a power supply unit to receive a DC voltage from the power supply unit. The testing board includes an output port. The electronic load board is connected to the output port of the testing board. The output port outputs the DC voltage to the electronic load board. The capacitor choice circuit is connected to the output port. The capacitor choice circuit includes a plurality of capacitor assemblies. Each capacitor assembly includes a switch and a capacitor. The capacitor is connected to the output port via the switch. Switches of the plurality of capacitor assemblies are turned on or off in different combinations to obtain different capacitances in the capacitor choice circuit for testing the power supply unit. | 11-07-2013 |
20130293258 | METHOD AND SYSTEM FOR DETECTING A DEFECT ON THE DC POWER SUPPLY BUS OF A POWER CONVERTER - The invention relates to a method for detecting a defect on the DC power supply bus of a power converter connected to an electrical distribution network (RD). The method comprises steps of:
| 11-07-2013 |
20130321024 | PLUG-IN ELECTRIC VEHICLE SUPPLY EQUIPMENT HAVING A PROCESS AND DEVICE FOR CIRCUIT TESTING - A system for connecting an electric vehicle to a high voltage power source is disclosed. The system including an electric vehicle supply equipment (EVSE) having an electrical plug compatible with a high voltage power outlet, the plug connected to a power cord. The power cord is connected to a housing containing a number of electrical components configured to control the power flow to an electric vehicle to recharge the vehicle's batteries. The power cord extends from the housing and is connected to a standard electric vehicle connector compatible with battery electric vehicles (BEV) and plug-in hybrid electric vehicles (PHEV). The EVSE further includes safety measures, such as a relay that controls the flow of power to the vehicle connector, a ground fault interrupter, and a circuit tester to protect users from high voltage electric shocks. | 12-05-2013 |
20130342237 | POWER SUPPLY TEST DEVICE - A power supply test device includes a function generator, a loading circuit, a current detection circuit, and a controller. The function generator outputs a square-wave signal to the loading circuit. The loading circuit is electronically connected to a power supply, the loading circuit regulates an output current of the power supply according to the square-wave signal. The current detection circuit cooperates with the controller in detecting a slope of the output current. The controller compares the detected slope with a preset value, and regulates the square-wave signal according to the comparison to regulate the slope of the output current. | 12-26-2013 |
20140070840 | Semiconductor Integrated Circuit, Operating Method of Semiconductor Integrated Circuit, and Debug System - A current measurement unit measuring power supply currents each consumed in a plurality of circuit blocks of which at least one of the circuit blocks includes a processor, and outputting the measurement result as the power supply current values. A selection unit selecting at least one of the power supply current values according to selection information. A trace buffer sequentially holding the power supply current values being selected by the selection unit together with execution information of the processor, and sequentially outputting the held information. By selecting the power supply current values of the circuit blocks required for debugging according to the selection information, the number of external terminals of a semiconductor integrated circuit required for the debugging which includes tracing the power supply current values may be reduced. As a result, a chip size of the semiconductor integrated circuit with a debug function may be reduced. | 03-13-2014 |
20140103955 | SYSTEM AND METHOD FOR AUTOMATED FAILURE DETECTION OF HOLD-UP POWER STORAGE DEVICES - A fault detection circuit is utilized to automatically detect faults in hold-up power storage devices. The fault detection circuit includes a hold-up monitoring circuit and a memory device. The hold-up monitoring circuit is connected to monitor output of the hold-up power storage device, wherein the hold-up monitoring circuit measures a duration of time that the hold-up power storage device provides sufficient power following a loss of normal power and detects faults based on the measured duration of time. The memory device is connected to store the duration of time measured by the hold-up power storage device following a loss of normal power | 04-17-2014 |
20140103956 | POWER SUPPLY DETECTION CIRCUIT AND METHOD - A power supply detection circuit includes a controller including a power module for supplying an input voltage to a to-be-tested power supply unit, a controlling module, a signal module, and a detection module, a resistor, and a MOSFET. A first end of the resistor connects an output end of the power supply unit. A second end of the resistor connects to the MOSFET. The MOSFET connects to the signal module. The detection module connects the output end. The control module controls the signal module to generate a pulse signals. The MOSFET is turned on to connect the resistor to the power supply unit to generate a fast-rising current when the pulse signal is in a high level. The detection module detects an output voltage of the output end, to confirm whether the output voltage is equal to the input voltage. This patent further discloses a power supply detection method. | 04-17-2014 |
20140118022 | MODULAR TESTING OF A POWER SUPPLY - A system and method for testing a power supply. A power-end of the power supply is received in a power port of a power supply tester. Information about the power supply is received. A load is dynamically configured for the power supply in response to the information. The power supply tester is automatically activated to power the power supply in response to the power supply being received by the power supply tester and the load being configured. Performance characteristic of the power supply are measured. The performance characteristics of the power supply are displayed to the user indicating functionality of the power supply. | 05-01-2014 |
20140125376 | GENERATED POWER OUTPUT MEASURING APPARATUS - A generated power output measuring apparatus is connected to a connecting wire between a power generator using natural energy and a power conditioner configured to supply electric power of the power generator to an external load. The generated power output measuring apparatus includes a load unit configured to draw a current from the power generator, a measuring unit configured to measure a voltage and current of the power generator via the load unit, and a control unit configured to increase the current flowing through the load unit and causing the measuring unit to make a measurement when the voltage measured by the measuring unit is in a range of operating voltage of the power conditioner. | 05-08-2014 |
20140139260 | ANTI-ISLANDING FOR GRID TIED INVERTERS - A method of detecting an islanding condition for a grid tied inverter includes receiving a plurality of sensed operating conditions for the grid tied inverter, and determining, based on the sensed operating conditions, whether a first fault has occurred. After determining that a first fault has occurred, the method includes determining whether a second fault has occurred. An islanding fault signal is generated when the second fault is determined to have occurred. | 05-22-2014 |
20140152339 | PROPORTIONAL-INTEGRAL-DERIVATIVE (PID) ANALOG CONTROLLER AND A METHOD FOR TESTING A PID ANALOG CONTROLLER OF A DC/DC CONVERTER - Embodiments of a method for testing a Proportional-Integral-Derivative (PID) analog controller of a Direct Current (DC)/DC converter and a PID analog controller of a DC/DC converter are described. In one embodiment, a method for testing a PID analog controller of a DC/DC converter involves setting an analog regulation loop, which is formed by an operational transconductance amplifier (OTA) of the PID analog controller and a feedback network of the PID analog controller, to a stable condition and testing a DC parameter of the PID analog controller and setting the analog regulation loop to an unstable condition and testing an Alternate Current (AC) parameter of the PID analog controller. Other embodiments are also described. | 06-05-2014 |
20140167809 | Methods, System and Modules for Testing UnInterruptible Power Supply (UPS) Systems with Multiple UPS Modules - A method of operating an Uninterruptible Power Supply (UPS) system can be provided by activating an idle state for a UPS module included in the UPS system and providing a UPS module test input to the UPS module in the idle state. A UPS module test response can be provided from the UPS module in the idle state, to the UPS module test input. The UPS module test response can be compared to a predetermined UPS module test response and the UPS module can be identified as a potentially faulty UPS module responsive to determining that the UPS module test response varies from the predetermined UPS module test response by more than a threshold value. | 06-19-2014 |
20140184264 | DIAGNOSTIC SYSTEM AND METHOD FOR FUEL CELL STACK - A diagnostic system and method for a fuel cell stack that diagnoses the state and/or failure of the fuel cell stack. More specifically, the diagnostic control analyzer diagnoses and analyzes the state of the fuel cell stack by measuring the voltage and the current received from the fuel cell stack. To do this, an AC signal generator cogenerates a diagnostic AC signal according to the control upon receiving a control command form the analyzer, and an AC component driving element is then driven upon receiving the AC signal that is output from the AC signal generator in order to include a diagnostic AC component within the current of the fuel cell stack. In particular, the diagnostic control analyzer diagnoses the fuel cell stack based on a voltage and a current received from the fuel cell stack that includes the AC component via a load. | 07-03-2014 |
20140184265 | TEST CIRCUIT FOR POWER SUPPLY UNIT - A test circuit includes a power supply unit, a number of resistors, a switch, and a number of light-emitting diodes (LEDs). A first pin of the power supply unit is coupled to the switch. A second pin of the power supply unit is coupled to a system power terminal The first system power terminal is coupled to an anode of a first LED through a first resistor. A cathode of the first LED is grounded. When the switch is turned on, the power supply unit receives a power-on signal through the first pin. If the power supply unit is qualified, the first LED emits light. | 07-03-2014 |
20140191780 | APPARATUS FOR TESTING A POWER SOURCE - A load device for applying an active load to a power source such as a wind turbine is characterized by an inductance and a resistive element both connected in parallel with the source. A relay is connected in series with the inductance and the resistive element and a controller is connected with the relays to selectively connect the inductance or resistive element with the source. By connecting a selected load with the power source, the source can be tested to evaluate that it is operating and performing properly. | 07-10-2014 |
20140210508 | Determining A Malfunctioning Device in A Plasma System - Systems and methods for determining a malfunctioning device in a plasma system, are described. One of the methods includes receiving an indication whether plasma is generated within a plasma chamber of the plasma system. The plasma system includes a processing portion and a power delivery portion. The method further includes determining whether the plasma system operates within constraints in response to receiving the indication that the plasma is generated, determining a value of a variable at an output of the power delivery portion when the processing portion is decoupled from the power delivery portion, and comparing the determined value with a pre-recorded value of the variable. The method includes determining whether the determined value is outside a range of the pre-recorded value and determining that the malfunctioning device within the power delivery portion upon determining that the determined value is outside the range of the pre-recorded value. | 07-31-2014 |
20140218066 | VOLTAGE TESTING DEVICE AND VOLTAGE TESTING METHOD FOR CPU - The disclosure provides a voltage testing device and a method. A voltage testing device includes a PCB, a computer, and a detecting chip. The PCB includes a CPU socket, a signal producing chip, and a voltage regulator. The computer sets predetermined data. The detecting chip is inserted in the CPU socket. The detecting chip includes a reading module, a converting module, a sending module, and a control module. The signal producing chip sends a start-up signal to the control module. The converting module coverts the predetermined data to SVID data. The sending module sends the SVID data to the voltage regulator. The voltage regulator sends a CPU voltage to the CPU socket. The voltage value testing device calculates a value of the CPU voltage to determine if the value of the CPU voltage associates with a voltage corresponding to the predetermined data. | 08-07-2014 |
20140253172 | Emergency Power System Environmental Alert Module - There is provided an apparatus and method to alert an operator of an emergency power system of an anomaly detected in an emergency power system prior to a severe environmental event based on receipt of an alert. The emergency power system environmental alert module is installed in the emergency power system and is coupled to an emergency power source and a main power source. When a public alerting service issues an alert of an impending environmental occurrence, such as an earthquake, hurricane, tornado, the environmental alert module of the emergency power system automatically performs tests and provides data reports to the operator or user of the emergency power system. | 09-11-2014 |
20140266293 | NOVEL APPROACH FOR GENERATION OF POWER FAILURE WARNING SIGNAL TO MAXIMIZE USEABLE HOLD-UP TIME WITH AC/DC RECTIFIERS - A method of optimally generating a power failure warning (PFW) signal has been disclosed here in such a manner that adjusts timing of PFW signal generation according to load conditions in case of input AC voltage loss. A PFW voltage threshold value can be set at a lower value under light load conditions and at a higher value under heavy load conditions. PFW signal generation can also be triggered by a timing mechanism that is set when a bus voltage drops to a voltage threshold value. A countdown time of the timing mechanism is set according to a determined bus voltage drop rate. In this manner, issuance of the PFW signal is delayed for lighter load conditions and the power supply unit is capable of extending normal operation under lighter load conditions before the PFW signal is issued. | 09-18-2014 |
20140266294 | REVERSE ENERGY FLOW IN SOLAR AND OTHER POWER GENERATION SYSTEMS FOR THEFT DETECTION, PANEL IDENTIFICATION AND DIAGNOSTIC PURPOSES - System and method for applying a reverse energy flow for measuring one or more electrical characteristics of a DC power source, such as a solar panel. Applying reverse current and voltage to a DC power source and measuring selected resultant current and voltage enables monitoring of electrical characteristics of the source, and when done periodically, enables monitoring of the performance of the source over time, including whether performance has become affected by a hardware failure or damage, or whether the source has become disconnected due to a faulty or failed connector or theft. | 09-18-2014 |
20140320161 | TESTING SYSTEM AND METHOD FOR DC-TO-DC BUCK CONVERTER CIRCUIT - A testing system for a DC-to-DC buck converter circuit includes a multi-meter connected to the DC-to-DC buck converter circuit, an oscilloscope, and a control device. The control device is connected to the multi-meter and the oscilloscope and is configured to adjust the multi-meter and the oscilloscope, and gather data and waves measured by the multi-meter and the oscilloscope. The control device generates a test report according to the data and waves measured by the multi-meter and the oscilloscope. The present disclosure further discloses a testing method based upon the above testing system. | 10-30-2014 |
20140320162 | WIRING STATE DETECTION DEVICE AND INTELLIGENT POWER MODULE - A wiring state detection device is configured to detect a state of a wiring that detachably and electrically connects a drive unit and a control unit via a connector. The drive unit has a switching element. The control unit is configured to perform drive control of the switching element. The wiring state detection device includes a phase delay detection unit and a connection state determination unit. The phase delay detection unit is configured to detect a phase delay of the drive of the switching element with respect to a command signal that the control unit supplies toward the switching element of the drive unit. The connection state determination unit is configured to determine whether or not a connection state of the connector or the wiring is normal based on whether or not the phase delay detected by the phase delay detection unit is less than a predetermined threshold. | 10-30-2014 |
20140327466 | OVER VOLTAGE PROTECTION TESTING APPARATUS - An over voltage protection testing apparatus is applied for testing an over voltage protection function of a power supply apparatus. The over voltage protection testing apparatus mainly includes a voltage boost-storage unit and an energy release unit. The voltage boost-storage unit boosts an original output voltage outputted from the power supply apparatus into a testing voltage. | 11-06-2014 |
20140327467 | ENERGY TRACKING SYSTEM - A system for tracking energy use in a electronic circuit. In one embodiment, an energy tracking system includes pulse timing logic and reporting logic. The pulse timing logic is configured to receive a pulse signal from a DC-DC converter, and measure a duration of a pulse of the pulse signal. The pulse signal controls the switching of energy to the storage device in the DC-DC converter. The reporting logic is configured to report the measured duration of the pulse to an energy monitoring system. | 11-06-2014 |
20140340111 | SYSTEM AND METHOD OF MAKING AN INTEGRITY TEST ON AN ELECTRICITY NETWORK IN AN AIRCRAFT - A system and method to test integrity of an electricity power supply network in an aircraft is disclosed. The system comprises: a current injector for connection to an output point of one or more phase line forming a test circuit with an electricity generator, the current injector configured to inject a test signal through the electricity generator in the test circuit; a current measurement test probe for installation in the test circuit to measure intensity of the injected test signal current; and a processing unit to connect to the current measurement test probe and to a set of input and output current measurement probes associated with the phase line to acquire current intensity measurement signals output by the current measurement test probe and by the set of input and output current measurement probes, and to determine electricity indicators representative of the integrity of the electricity power supply network. | 11-20-2014 |
20140347091 | DEVICE FOR DETECTING PARTIAL DISCHARGE FOR POWER TRANSFORMER - The present invention relates to a device for detecting a partial discharge for a power transformer which detects an electromagnetic signal occurring due to faulty insulation. The device includes an antenna unit receiving electromagnetic waves, an insulator including the antenna unit, a metallic air-tight unit that seals a connector connected to the insulator and connecting a coaxial cable, and the coaxial cable exposed to the outside of the metallic air-tight unit. Thus, it is possible to enhance broadband properties through an internal conductor of a drain valve. | 11-27-2014 |
20140375352 | SYSTEMS AND METHODS FOR SENSING ENVIRONMENTAL CHANGES USING LIGHT SOURCES AS SENSORS - Systems and methods for sensing environmental changes using electromagnetic interference (EMI) signals are disclosed herein. An EMI monitoring system may be used to monitor an EMI signal of one or more light sources provided over a power line, e.g., in a home or building. The received EMI energy at the power line may be analyzed to detect variations in the EMI signature indicative of environmental changes occurring in the proximity of the light sources. Environmental changes that may be sensed include, but are not limited to, proximity, touch, motion, and temperature change. | 12-25-2014 |
20150015301 | ISLANDING DETECTION IN ELECTRICITY DISTRIBUTION NETWORK - A device is disclosed for detecting an islanding condition in an electricity distribution network, by receiving a signal of the electricity distribution network, and determining an islanding condition based on the received signal. The device determines a voltage total harmonic distortion change parameter for each phase component in the received signal, determines a voltage unbalance change parameter in the received signal, compares each of the voltage total harmonic distortion change parameters and the voltage unbalance change parameter to respective triggering conditions, and concludes an islanding condition to have been detected when the voltage total harmonic distortion change parameter for each phase component of the signal and the voltage unbalance change parameter fulfil their respective triggering conditions. | 01-15-2015 |
20150015302 | ISLANDING DETECTION RELIABILITY IN ELECTRICITY DISTRIBUTION NETWORK - A device for detecting an islanding condition in an electricity distribution network. The device comprises means for concurrently monitoring an islanding condition and a network event condition in the electricity distribution network, means for detecting an islanding condition in the power system network, and means for determining on the validity of detection of the islanding condition based on whether there is an associated network event with the detected islanding condition. | 01-15-2015 |
20150028916 | METHOD OF AND CIRCUIT FOR BROWN-OUT DETECTION - A circuit and method for detecting a brown-out condition and providing a feed-forward transfer function in a power supply circuit. A comparison circuit is coupled to a delay element through a latch. A second delay element is connected between the first delay element and an input of the latch. The output of the first delay element is connected to a clamping circuit via a logic circuit. A first voltage is compared with a reference voltage to generate a comparison voltage, which is transmitted through the latch and the first delay element. The comparison voltage is monitored at an output of the first delay element. A brown-out condition occurs if the comparison voltage being monitored at the output of the first delay element results from the first voltage being less than the reference voltage. | 01-29-2015 |
20150035557 | ERROR DETECTION CIRCUIT, POWER SOURCE UNIT, AND IMAGE FORMING APPARATUS - Provided are an error detection circuit, a power source unit, and an image forming apparatus that are capable of detecting a short circuit state and an open circuit state of a power source output. | 02-05-2015 |
20150035558 | POWER THEFT INSPECTION APPARATUS AND POWER THEFT INSPECTION METHOD - A power theft inspection apparatus ( | 02-05-2015 |
20150084669 | Power Source Arrangement and Method of Diagnosing a Power Source Arrangement - An embodiment method of diagnosing a power source arrangement includes a plurality of n power sources connected in series between output terminals, wherein n≧2. At least two different groups of power sources are selected from the power source arrangement. A voltage of each of the at least two different groups is measured between the output terminals. During the measurement of the voltage of one group, the power sources of the power source arrangement that do not belong to the one group are bypassed. The at least two measured voltages obtained through measuring the voltage of each of the at least two different groups or at least two voltages that are dependent on these at least two measured voltages are compared. | 03-26-2015 |
20150091604 | METHOD FOR CHECKING A SEPARATION POINT OF A PHOTOVOLTAIC INVERTER, AND PHOTOVOLTAIC INVERTER - The invention relates to a method for checking a photovoltaic inverter separator ( | 04-02-2015 |
20150091605 | PORTABLE SELF POWERED LINE MOUNTABLE ELECTRIC POWER LINE CURRENT MONITORING TRANSMITTING AND RECEIVING SYSTEM - A method of determining a fault on a power line conductor includes the steps of determining a magnitude and a direction of a load current waveform in the power line conductor with a loop coil and determining a magnitude and a direction of a fault current waveform in the power line conductor with the loop coil. A polarity of the fault current waveform is compared with a polarity of the load current waveform to determine if a change in polarity between the fault current waveform and the load current waveform occurred to determine the direction of the fault. Data representing a fault to at least one remote location is transmitted when a predetermined trigger value is reached. | 04-02-2015 |
20150097594 | TWO WIRE COMBINED POWER AND DATA NETWORK SYSTEM SEGMENT WITH FAULT PROTECTION DEVICE - A segment of a two wire combined power and data network system for automation comprising a trunk, a spur mounted thereon and a fault protection device, in which said fault protection device comprises a control means adapted to monitor the current of said spur, and isolation means adapted to fully or partially isolate said spur from said trunk upon receipt of an activation signal from said control means, in which said control means comprises a failure status determination algorithm comprising an intermittent fault count over time step and a fault duration step, in which said intermittent fault count over time step is satisfied if a pre-determined number of separate faults are detected over a first pre-determined time period, in which said fault duration step is satisfied if a fault is detected which persists for longer than a second pre-determined time period, and in which said control means issues said activation signal upon determination of a failure status on said spur which satisfies the intermittent fault count over time step and/or the fault duration step of said algorithm. | 04-09-2015 |
20150109020 | POWER SUPPLY CURRENT MONITORING DEVICE - A power supply current monitoring apparatus is used for a load drive apparatus with two systems to drive a load. Each system includes a drive circuit connected in parallel with a battery and a relay connected between the drive circuit and a point at which power of the battery is divided between the systems. When overcurrent is detected once in one system, a repetitive monitoring process is performed. The monitoring process determines whether the overcurrent occurs by repeating a monitoring cycle. The monitoring cycle turns OFF the relay of one system and then monitors currents by turning ON the relay of one system when a predetermined cycle time elapses since the overcurrent detection. The monitoring process includes a mask procedure to stop monitoring the current in the other system. The mask procedure is performed after the relay of one system is turned OFF in each monitoring cycle. | 04-23-2015 |
20150109021 | METHOD OF OPERATING A STATIONARY ELECTRICAL POWER PLANT CONNECTED TO A POWER SUPPLY NETWORK - A method of operating a stationary power plant connected to a power supply network, wherein upon the occurrence of a dynamic network fault in the power supply network, in particular an electric short-circuit, at least one fault value is ascertained in dependence on a state value of at least one operating parameter of the power plant wherein the at least one fault value is associated with at least one component of the power plant, wherein a maintenance signal for the at least one component of the power plant is output in dependence on the at least one fault value. | 04-23-2015 |
20150115995 | Battery Charger Module for Charging a Vehicle Battery and Method for Determining a State of an AC Power Supply at a Battery Charger Module - A battery charger module to be mounted in a vehicle for charging a vehicle battery is disclosed. The battery charger module may include a capacitor, and a direct current (DC) voltage sensor configured to sense a DC voltage across the capacitor. The battery charger module may further include a controller configured to compare the sensed voltage to a voltage threshold, and to determine that an alternating current (AC) power supply is unstable if the sensed voltage fails to exceed the voltage threshold. A method is also disclosed for determining a state of an AC electrical power supply at a battery charger module for charging a vehicle battery. The method may include sensing a DC voltage across a capacitor, comparing the sensed voltage to a voltage threshold, and determining that the AC power supply is unstable when the sensed voltage fails to exceed the voltage threshold. | 04-30-2015 |
20150115996 | APPARATUS FOR SIMULATING BATTERY - An apparatus for simulating a battery is provided. The apparatus includes a power supplying unit, a state regulating unit and an impedance unit. The power supplying unit is coupled to a power terminal of a battery interface and determines whether to provide an operation voltage to the power terminal according to a device voltage provided by the power terminal. The state regulating unit is coupled to the power terminal to provide a impedance regulating signal. The impedance unit is coupled between the power terminal and a ground voltage and is coupled to the state regulating unit to receive the impedance regulating signal. The impedance unit regulates an impedance thereof according to the impedance regulating signal. | 04-30-2015 |
20150115997 | METHOD OF OPERATING A GENERATOR CONNECTED TO A POWER SUPPLY NETWORK - A method of operating a generator connected to a power supply network, in particular a synchronous generator, during a network fault in the power supply network, in particular during an electric short-circuit, wherein electric excitation of the generator is at least temporarily reduced in dependence on the value of at least one operating parameter of the generator prior to the network fault and/or during the network fault. | 04-30-2015 |
20150123700 | INDUSTRIAL SYSTEM PHASE SAG DETECTION - Described herein are methods, systems, and apparatuses for determining sag in a signal. In one example, a method of tracking sag in a signal includes, when in an initial state, monitoring for when the signal transitions to a sag state based at least on an output of a tracking filter. In response to the signal transitioning to the sag state, increasing a bandwidth of the tracking filter and, when in the sag state, monitoring for when the signal transitions to a recovering state. The method further includes, in response to the signal transitioning to the recovering state, decreasing the bandwidth of the tracking filter. | 05-07-2015 |
20150130502 | CIRCUIT AND METHOD FOR DETECTING A FAULT ATTACK - A device for detecting a fault attack, including: a circuit for detecting an interruption of a power supply; a circuit for comparing the duration of said interruption with a first threshold; and a counter of the number of successive interruptions of the power supply having a duration which does not exceed the first threshold. | 05-14-2015 |
20150137850 | DISTRIBUTED DETECTION OF LEAKAGE CURRENT AND FAULT CURRENT, AND DETECTION OF STRING FAULTS - For monitoring an inverter that includes separate input-side connectors for multiple direct-current generators with regard to the occurrence of a critical fault current, differential currents in at last two pairs of input lines are measured separately in the inverter. The at last two pairs of input lines conduct the currents that are fed in at different input-side connectors, and all pairs of input lines in their entirety transmit all currents that are fed in at the connectors. The differential currents are compared with a limit value separately for each pair of input lines. A case of the limit value being exceeded is recognized as a fault. In addition, a sum of simultaneously occurring differential currents in all pairs of input lines is determined and the sum is compared with a further limit value, wherein a case of the further limit value being exceeded is also recognized as a fault. | 05-21-2015 |
20150145553 | DETECTION OF A SHORT-CIRCUIT IN A SWITCHING STRUCTURE - A device for supplying power to an inductive load includes a switching structure designed to control a current in the load, and elements for detecting anomalies designed to generate information on detection or information on non-detection of an anomaly of the short-circuit type able to occur in the cabling toward the load, in combination with information on validity of the information on non-detection of anomalies. The information on anomaly non-detection is delivered without setting the validity information if the measured current at the end of an appropriate time window is less than a given value of current. | 05-28-2015 |
20150301125 | POWER SUPPLY MONITORING DEVICE, ELECTRONIC APPARATUS, AND POWER SUPPLY MONITORING METHOD - A power supply monitoring device, comprising a monitoring circuit that includes a first charge comparing unit configured to generate a first comparison result based on a first pulsating signal, a second charge comparing unit configured to generate second comparison result based on a second pulsating signal, and a power interruption detection unit configured to output a detection signal based on whether the first and second comparison results indicate a supply of power has been interrupted. | 10-22-2015 |
20150301126 | DEVICE AND METHOD FOR EARLY DETECTION OF POWER FAILURE IN AN EXTERNAL POWER SUPPLY - An external power supply converts AC power to DC Power for a device. The external power supply and the device comprise circuits that provide early AC input failure detection so that the device can take measures such as to safe keep data as long as the external power supply continues to provide DC power to the device. | 10-22-2015 |
20150301127 | Methods and Apparatus for Sensing Ground Leakage and Automated Self Testing Thereof - Methods and apparatus provide for: measuring leakage current from a source of AC power, which provides power to at least one load circuit; and comparing the measured leakage current values against one or more predetermined thresholds to establish status therefor; and automatically performing self tests to determine whether the leakage current sensing and comparing operations are operative. | 10-22-2015 |
20150309119 | AUTOMATED METHOD AND APPARATUS FOR TESTING A POWER CONVERTER - A method and apparatus for testing operability of a power converter with an existing power conversion assembly of a renewable energy system is disclosed. The method includes transferring a first pulse of energy from an existing power conversion assembly to a power filter of the power converter through first cells within a bridge circuit of the power converter. Another step includes determining a first current-voltage feedback associated with the first pulse. A next step includes transferring a second pulse of energy from the power filter to the existing power conversion assembly through second cells within the bridge circuit such that a portion of the first pulse moves back to the existing power conversion assembly. Another step includes determining a second current-voltage feedback associated with the second pulse. The first and second current-voltage feedbacks are compared with nominal tolerances of the power converter to ensure the power converter is operating properly. | 10-29-2015 |
20150309123 | AUTOMATED METHOD AND APPARATUS FOR TESTING A CROWBAR CIRCUIT OF A POWER CONVERTER - The present disclosure is directed to an automated apparatus and method for testing a crowbar circuit of power converter. The crowbar circuit includes an anti-parallel diode and a voltage-controlled switching element, e.g. a silicon-controlled rectifier (SCR). The method includes implementing a first test sequence for testing operability of the diode and a second test sequence for testing operability of the voltage-controlled switching element. More specifically, the first test sequence determines a first current-voltage feedback that is indicative of the operability of the diode and the second test sequence determines a second current-voltage feedback that is indicative of the operability of the voltage-controlled switching element. | 10-29-2015 |
20150316621 | CIRCUIT FAULT DETECTION DEVICE - A circuit fault detection device includes: an interruption-signal generation unit that outputs an interruption signal for a drive circuit stopping driving of a drive target on a basis of the interruption signal; a pulse generation unit that includes an adjustment unit adjusting a time during which a pulse signal is in an OFF state and that generates the pulse signal; a signal synthesis unit that outputs a logical AND of the interruption signal and the pulse signal; a filter circuit that inputs, as an output, a signal obtained by delaying an output signal of the signal synthesis unit to the drive circuit; and a monitoring unit that determines whether a circuit fault has occurred on a basis of an output voltage of the filter circuit. | 11-05-2015 |
20150331062 | Failure Detection Method and Detection Device for Inverter - The present disclosure provides a failure detection method for an inverter, which comprises steps of: performing Fourier transformation on output voltage signals of an inverter to obtain voltage harmonic signals; classifying the Fourier-transformed voltage harmonic signals; and determining a failure type corresponding to the Fourier-transformed voltage harmonic signals. Correspondingly, the present disclosure further provides a failure detection device for an inverter. | 11-19-2015 |
20150331064 | CIRCUIT FOR MEASURING POWER VIOLATIONS USING HIGH SIDE CURRENT SENSING - A power monitoring circuit and method for detecting deviations in the output of a power supply. The power monitor is configured to detect and measure two different types of deviations: transient deviations short surges or spikes in the current drawn by the device being powered and prolonged deviations over a threshold current that may be intentional, temporary increases in the output of the power supply. The power monitor collects information such as the number of each type of deviation, the duration of each deviation and the peak current describing identified deviations. This collected information can then be used, especially during the development phase, to locate the root cause of the deviation. The components of the power monitor used to detect and measure these deviations may be disabled and enabled as needed. | 11-19-2015 |
20150338472 | Method And Device For Detection Of A Fault In A Protected Unit - A method to facilitate fault detection in the protected unit after connection to the at least a portion of the power system. A current is sensed in the protected unit during a plurality of different time periods. Compliance of at least one of the sensed currents with a respective first current criteria is determined based on a first current threshold value. On a condition that there is determined that at least one of the sensed currents comply with the respective first current criteria, a fault in the protected unit is detected. | 11-26-2015 |
20150343918 | FAULT DIAGNOSTIC DEVICE FOR VEHICLE CHARGING SYSTEM - A fault diagnostic device of a vehicle includes a starting circuit which causes a charger mounted on the vehicle to output a charging start signal and thereby activate a control unit for controlling charging of a battery mounted on the vehicle when a charging gun is connected to the charger. The control unit causes the charger to output the charging start signal when the charger is activated in response to turning on of an ignition switch, and has a fault determination function whereby, if the control unit is not input with the charging start signal, it is judged that a disconnection or power-supply short circuit has occurred in a charging start signal circuit of the starting circuit. | 12-03-2015 |
20160003921 | METHOD FOR TESTING MULTIPLE SPATIALLY DISTRIBUTED PROTECTIVE DEVICES OF AN ENERGY SUPPLY NETWORK, AND CORRESPONDING TESTING SYSTEM - The present invention relates to a method for testing multiple spatially distributed protective devices (SE | 01-07-2016 |
20160011276 | INSPECTING APPARATUS AND INSPECTING METHOD FOR NONCONTACT POWER TRANSFER SYSTEM | 01-14-2016 |
20160025791 | OVERCURRENT DETECTING CIRCUIT AND LEAKAGE CURRENT DETECTING CIRCUIT - An overcurrent detecting circuit and a leakage current detecting circuit are disclosed. In one aspect, the overcurrent detecting circuit of a display device supplying a power voltage to a display panel through a plurality of power supply lines. The overcurrent detecting circuit includes a plurality of power voltage measurement lines electrically connected to different points of the power supply lines. The overcurrent detecting circuit also includes a plurality of voltage measurement units respectively electrically connected to the power voltage measurement lines. The voltage measurement units are configured to measure the power voltage at the different points through the power voltage measurement lines and generate a plurality of measurement voltages based at least in part on the measured power voltages. The overcurrent detecting circuit further includes a controller configured to detect presence of an overcurrent based at least in part on the measurement voltages. | 01-28-2016 |
20160033560 | MODE-CONTROLLED VOLTAGE EXCURSION DETECTOR APPARATUS AND A METHOD OF OPERATING THEREOF - The present application relates to a mode-controlled voltage excursion detector apparatus for monitoring a supply voltage of a power supply applied to a load and a method of operating thereof. A voltage monitor is configured to detect an excursion event if the supply voltage exceeds or falls below at least one defined threshold, to generate an excursion event signal upon detection of the excursion event and to provide the generated excursion event signal to the excursion event output for being outputted via an excursion event output. A sensitivity control module is configured to receive a signal indicative of potential voltage excursions. A sensitivity control module is further operatively coupled to the sensitivity control input and configured to disable the outputting of an excursion event signal generated during a defined period of time in response to the reception of the signal, which triggers the disabling of the outputting. | 02-04-2016 |
20160033583 | SYSTEM TO IDENTIFY POTENTIAL ELECTRICAL NETWORK FAULTS COMBINING VIBRATION AND POWER QUALITY ANALYSIS - A system to identify potential faults in an electrical power distribution system includes a vibration monitor configured to detect a vibration event proximate a portion of the electrical power distribution system, a power quality monitor configured to detect a power quality event in a portion of the electrical power distribution system, an analysis system configured to correlate the vibration event detected by the vibration monitor with the power quality event detected by the power quality monitor, and an output configured to receive information regarding the power quality event from the analysis system and to provide the information to an operator. | 02-04-2016 |
20160054395 | Systems and Methods for Automatically Testing the Communication Between Wireless Power Transmitter and Wireless Power Receiver - Systems and methods to use software to automatically test the communication between wireless power transmitter and wireless power receiver are described. The described systems include one or more wireless power transmitters, one or more wireless power receivers and one or more electronic devices. Electronic devices may be able to communicate with wireless power transmitters and wireless power receivers using suitable communications channels. The disclosed methods may be employed for antenna direction management and for transmission of power from transmitter to receiver in a wireless power transmission system. | 02-25-2016 |
20160054396 | Method for Automatically Testing the Operational Status of a Wireless Power Receiver in a Wireless Power Transmission System - Disclosed here are wireless power delivery systems including one or more wireless power transmitters and one or more power receivers. Disclosed here are methods of using self-test software for fault detection in wireless power receivers. The methods include the analysis of one or more system operational metrics to evaluate the status of wireless power receivers. The results of the tests may be sent to wireless power transmitters to further analysis; all test results ultimately are sent to the operator of the wireless power delivery system. | 02-25-2016 |
20160077161 | METHOD FOR IMPROVED DIAGNOSTIC IN DETERMINING AND PREVENTING INVERTER FAULTS - The disclosed concept pertains to systems and methods for improving diagnostics in preventing inverter faults and determining the likelihood or occurrence of inverter faults. The disclosed concept includes employing one or more sensors capable of sensing and measuring one or more of magnetic field, temperature, vibration and humidity of the inverter. The measured values of these parameters are compared to previously obtained values or threshold values to determine whether action is required to preclude an inverter fault or cease operation in response to the occurrence of an inverter fault. | 03-17-2016 |
20160077162 | FAULT DETECTION - Methods, systems, and apparatus, including computer programs encoded on computer storage media, for fault detection in a power control system. In one aspect, a method includes measuring a plurality of values of a feedback voltage from a power control system over a period of time; determining a rate of feedback voltage change based on the measured values of the feedback voltage and a duration of the period of time; determining, with a controller, that the determined rate of feedback voltage change is smaller than a threshold rate of change; and in response to determining that the determined rate of feedback voltage change is smaller than the threshold rate of change, transmitting a fault indication signal to the power control system. | 03-17-2016 |
20160091537 | Method and Apparatus for Monitoring Power Grid Parameters - A system and method for measurement of one or more parameters of a power grid ( | 03-31-2016 |
20160091558 | ACTIVATION OF AN ELECTRICAL CONSUMER | 03-31-2016 |
20160103189 | Methods and Systems For Detecting Vehicle Charging System Faults - A vehicle may include a vehicle charging system having an alternator operatively coupled to an engine and a controller. The controller may be programmed to output a warning indicative of a vehicle charging system fault in response to a quotient of a voltage drop associated with the alternator and an output current of the alternator exceeding a threshold value while the alternator is operating in a steady state condition. | 04-14-2016 |
20160103190 | METHODS, SYSTEMS AND MODULES FOR TESTING UNINTERRUPTIBLE POWER SUPPLY (UPS) SYSTEMS WITH MULTIPLE UPS MODULES - A method of operating an Uninterruptible Power Supply (UPS) system can be provided by activating an idle state for a UPS module included in the UPS system and providing a UPS module test input to the UPS module in the idle state. A UPS module test response can be provided from the UPS module in the idle state, to the UPS module test input. The UPS module test response can be compared to a predetermined UPS module test response and the UPS module can be identified as a potentially faulty UPS module responsive to determining that the UPS module test response varies from the predetermined UPS module test response by more than a threshold value. | 04-14-2016 |
20160131690 | POWER SOURCE VOLTAGE DETECTION APPARATUS - A power source voltage detection apparatus is provided, including a reference voltage generator connected to a differential amplifier via a first transmission line and decreases a power source voltage of a direct current power source to output a power source reference voltage, the first transmission line transmitting the power source reference voltage as a first power source voltage detection voltage; a standard voltage generator connected to the differential amplifier via a second transmission line and outputs a predetermined standard voltage, the second transmission line transmitting the standard voltage as a second power source voltage detection voltage; the differential amplifier differentially amplifying the first and second power source voltage detection voltages; and an abnormality detector which, based on the first and second power source voltage detection voltages, detects the power source voltage and detects an abnormality of the first transmission line and/or the second transmission line. | 05-12-2016 |
20160131721 | ELECTRONIC APPARATUS, SYSTEM FOR ESTIMATING DEGRADATION OF INTERNAL POWER SUPPLY, AND METHOD OF ESTIMATING DEGRADATION OF INTERNAL POWER SUPPLY - An electronic apparatus includes: an internal power supply to be charged; a charging circuit configured to supply electrical power from an external power supply to the internal power supply; a voltage measurement circuit configured to measure a voltage of the internal power supply; a temperature sensor configured to measure a temperature of the internal power supply; and an estimation circuit configured to estimate a degree of degradation of the internal power supply, wherein the estimation circuit determines whether it is possible to perform a degradation estimation process to estimate the degree of degradation of the internal power supply based on the voltage of the internal power supply and the temperature of the internal power supply, and performs the degradation estimation process on the internal power supply only when determining that it is possible to perform the degradation estimation process on the internal power supply. | 05-12-2016 |
20160146865 | CAPTURE OF POWER QUALITY INFORMATION AT THE TIME A DEVICE FAILS - An apparatus for detecting an abnormal event and capturing associated waveforms includes a detection module within a power control device that detects an abnormal condition. The abnormal condition is indicative of an impending failure of the power control device and/or a condition within the power control device indicative of a parameter being outside of a specified limit. The power control device controls power to one or more power devices in a power distribution system. The apparatus includes a signal transmit module that transmits a capture signal to a transient capture meter. The transient capture meter meters transient conditions of a branch of the power distribution system that includes the power control device. The capture signal instructs the transient capture meter to capture current and/or voltage waveforms relevant to a time when the detection module detected the abnormal condition. | 05-26-2016 |
20160146902 | System and Method for Detecting Diode Failures - A system for detecting faults in a rectifier includes an AC current generator and a rectifier. A controller is configured to determine an AC input current supplied to rectifier, generate a simulated rectified DC input current based upon the AC input current, and determine a DC output current from the rectifier. The controller is further configured to compare the simulated rectified DC input current to the DC output current and generate an alert command if a difference between the simulated rectified DC input current and the DC output current exceeds a predetermined difference threshold. | 05-26-2016 |
20160149240 | APPARATUS AND METHOD FOR DIAGNOSING FUEL CELL - An apparatus and method for diagnosing a fuel cell diagnoses a state of a fuel cell by estimating a fuel-cell equivalent circuit. The apparatus for diagnosing a fuel cell includes: an impedance measurement unit configured to measure impedance of a fuel cell within a predetermined frequency range; an equivalent circuit model unit configured to derive each parameter value by estimating a predetermined fuel-cell equivalent circuit model in response to the impedance received from the impedance measurement unit; and a fuel-cell-state diagnosis unit configured to diagnose a state of the fuel cell by detecting a variation of the parameter value derived from the equivalent circuit model unit. | 05-26-2016 |
20160161569 | METHOD FOR DETECTING FAILURE OF ENERGY HARVESTING DEVICE - The invention relates to a method that comprises: obtaining information relating to an energy harvesting device ( | 06-09-2016 |
20160169950 | FREQUENCY SELECTIVE POWER MONITOR | 06-16-2016 |
20160178708 | METHOD FOR ESTABLISHING A FUNCTIONAL DIAGNOSIS FOR A BUCK STATIC DC-DC VOLTAGE CONVERTER | 06-23-2016 |
20160252562 | PERFORMANCE ANALYSIS OF POWER GRID MONITORS | 09-01-2016 |
20160252579 | LOAD TESTING APPARATUS AND COUPLING SWITCH UNIT FOR LOAD TESTING APPARATUS | 09-01-2016 |
20160252588 | INVERTER AND DETECTION METHOD FOR AN INVERTER FOR DETECTING A NETWORK FAULT | 09-01-2016 |
20160377663 | METHODS AND APPARATUS FOR MONITORING A LEVEL OF A REGULATED SOURCE - A monitor circuit for monitoring a level of a first and second regulated source may monitor a voltage level of regulated voltages or a current level of regulated currents. In an embodiment, the monitor circuit includes circuitry responsive to a first regulated voltage and to a second regulated voltage. A first circuit responsive to the first regulated voltage and to the second regulated voltage generates a first error signal indicative of at least one of an overvoltage condition of the first regulated voltage and an undervoltage condition of the second regulated voltage. A second circuit responsive to the first regulated voltage and to the second regulated voltage generates a second error signal indicative of at least one of an undervoltage condition of the first regulated voltage and an overvoltage condition of the second regulated voltage. A method for monitoring the levels of first and second regulated sources is also provided. | 12-29-2016 |
20160377666 | ABNORMALITY DETECTING CIRCUIT AND ABNORMALITY DETECTING METHOD - There is provided an abnormality detecting circuit. A clamp unit is configured to clamp an output voltage which is output from another device, such that the upper limit of the output voltage becomes a first clamp voltage which is generated on the basis of a constant voltage generated from a power supply voltage, or a second clamp voltage which is generated on the basis of the power supply voltage and which varies depending on the power supply voltage. A short-to-power detection unit is configured to compare the output voltage clamped by the clamp unit, with a predetermined threshold value which is generated on the basis of the power supply voltage, thereby detecting occurrence of a short to power. | 12-29-2016 |
20170234936 | DETECTING A FAILURE OF A PHASE IN A GRID FOR INVERTERS HAVING A FREQUENCY DETECTION IN AN INTERMEDIATE DC VOLTAGE LINK | 08-17-2017 |
20180024204 | UNIVERSAL POWER DISTRIBUTION TEST TOOL AND METHODOLOGY | 01-25-2018 |
20190146025 | IMPROVEMENTS IN OR RELATING TO THE DETECTION OF A FAULT ON A POWER CONVERTER | 05-16-2019 |