| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 324086000 | Polyphase (e.g., phase angle, phase rotation or sequence) | 17 |
| 20080265869 | SWITCHING POWER SUPPLY PERFORMANCE TESTING - One embodiment includes a system comprising a switching power supply comprising at least one switching phase configured to provide a corresponding phase output at a respective phase node thereof, the respective phase node being coupled to an output through a filter for providing a corresponding output signal. At least one resistor interconnects the respective phase node of each of the at least one switching phase with a test node, the test node being configured to provide a test signal representing the phase output at each phase node. | 10-30-2008 |
| 20090153133 | METHODS AND APPARATUS FOR COLLECTING CHARACTERISTICS OF A POWER LINE A BPL SYSTEM - An apparatus for collecting characteristics of a power line in a broadband over power line system that comprises a power line characteristic measuring device for measuring power line characteristics and a collector unit for collecting data from the power line characteristic measuring device and sending the data over the broadband over power line system to a remote location where the collector unit is a regenerator. Further, the apparatus can comprise a coupler, to couple the power line to the power line characteristic measuring device and the collector unit and allows a broadband over power line signal to pass from the power line to the collector unit. | 06-18-2009 |
| 20100060259 | Determining Electric Grid Endpoint Phase Connectivity - The service phase of the electrical connection to a customer endpoint device located within a power distribution system is determined by various techniques. At the feeder level, the system may be programmed to induce momentary power interruptions, thereby causing missed zero crossings at the customer endpoint devices. The pattern of these interruptions is a controlled one, designed specifically to avoid causing noticeable disruption even to sensitive devices, but to be unusual enough that it is statistically unlikely to be naturally occurring. The monitoring of the zero crossing information is used to determine the phase of the service line to the customer endpoint devices. | 03-11-2010 |
| 20100072980 | METHOD AND APPARATUS FOR CURRENT MEASUREMENT IN AN ELECTRICAL NETWORK, IN PARTICULAR A MULTIPHASE ELECTRICAL NETWORK - The invention relates to a method for current measurement in an in particular multiphase electrical system, in which an electrical load is energized as desired by at least one circuit element and a control unit produces drive signals which act on the at least one circuit element in order to achieve the desired energization of the load. The invention provides that clock patterns of the drive signals are associated with measurement windows for current measurement, in particular for measuring phase currents, and clock patterns are temporally offset in order to obtain measurement windows with a sufficient temporal length. A minimum temporal shift is the sum of a minimum dead time of the circuit element, a minimum settling time of the measuring amplifier circuit, and a minimum sampling time of the analogue-to-digital converter. The invention furthermore provides that the clock patterns are selected taking into consideration a phase selection for the current measurement. Provision may be made for the clock patterns to be selected taking into consideration the instantaneous rotary angle position of the phase vector. In addition, a corresponding apparatus is specified. | 03-25-2010 |
| 20100237852 | Method for Determining the Phases in a Multi-Phase Electrical System and Device for The Implementation Thereof - A method and device for determining the phases in a multi-phase electrical system includes detecting a first waveform on a phase of the multi-phase system In a first position of the multi-phase electrical system timed data is stored, synchronized with the first waveform. A second waveform is detected in a second position of the multi-phase electrical system, on an indeterminate phase of the system. Data is obtained relative to the phase on which the second waveform was read on the basis of the phase shift between the timed data and the second waveform. | 09-23-2010 |
| 20120169322 | PHASE IDENTIFICATION SYSTEM AND METHOD - A phase identification system includes a power distribution station comprising a phase distortion device to generate distortions at cross over points of at least two pairs of three phase voltages and a phase detection device to receive one of the three phase voltages and to identify a phase of the received voltage based on a characteristic of a distortion in the received voltage. | 07-05-2012 |
| 20120217953 | Methods for Sensing Cycle and Phase Difference of AC Signals - The present disclosure discloses methods for sensing a cycle and a phase difference of an AC signal. A method for sensing the cycle of an AC signal may comprise the steps of: determining sample points in waveforms of the AC signal according to a fixed time interval; sampling N continuous sample points as one group of initial samples, in which the product of N and the fixed time interval is larger than or equal to the minimum cycle of the AC signal; sampling a plurality of groups of samples as a plurality of groups of target samples; calculating the cross-correlation between each group of the plurality of groups of target samples and the group of initial samples; and providing the time interval between the group of initial samples and a group of the target samples that has the highest cross-correlation as the cycle of the AC signal. | 08-30-2012 |
| 20120249121 | METHOD, SYSTEM AND DEVICE OF PHASE IDENTIFICATION USING A SMART METER - Described herein are embodiments of methods, devices and systems of phase identification for a meter. One aspect comprises a method of phase identification for a smart meter. One embodiment of the method comprises connecting a device to at least a first phase of a poly-phase electrical system; metering at least the first phase of the poly-phase electrical system that the device is connected to for electrical consumption information using a meter; storing a first phase identifier for the first phase of the poly-phase electrical system that the device is connected to in a memory associated with the meter; and transmitting at least the first phase identifier over a network operably connected with the meter. | 10-04-2012 |
| 20120286766 | APPARATUS FOR DETECTING INPUT PHASE MISSING AND METHOD THEREOF - Provided is an apparatus for detecting input phase missing and a method thereof, wherein the apparatus includes: a power input unit applying a 3-phase AC voltage; a rectifying unit rectifying the AC voltage applied from the power input unit; a filter unit bandpass-filtering the rectified voltage and calculating magnitude of ripple voltage from the filtered voltage; and a missing input phase detecting unit determining whether an input phase missing has occurred according to the magnitude of the ripple voltage, whereby the input phase missing can be detected without an error, and a method thereof, and fast response and simplicity of embodiment can be realized without calculation process of ripple frequency. | 11-15-2012 |
| 20130221946 | METHOD AND DEVICE FOR MEASURING THE PHASE-NOISE SPECTRUM OF A PULSED SINUSOIDAL SIGNAL - A device for measuring the phase-noise spectrum of a pulsed sinusoidal signal generates a pulsed sinusoidal signal, converts the analog pulsed sinusoidal signal into a corresponding digital, pulsed sinusoidal signal and mixes the digital, pulsed sinusoidal signal into the baseband by means of quadrature mixing. Following this, the phase of the pulsed sinusoidal signal in the baseband is determined by means of Fourier transform of the phase of the pulsed sinusoidal signal, the phase spectrum of the pulsed sinusoidal signal is determined, and the phase-noise spectrum of the pulsed sinusoidal signal is determined by removing the spectral lines associated with the sinusoidal signal from the phase spectrum. According to the invention, the pulse pauses are removed from the pulsed sinusoidal signal in the baseband. | 08-29-2013 |
| 20140043015 | ELECTRICAL CONDUCTOR PHASE IDENTIFICATION SYSTEM - A system for identifying an electrical phase of three conductors in a three-phase electrical system at an open end is provided. The system includes a transmitter and a receiver unit. The transmitter unit has three current transformers configured to removably couple with one of the three conductors adjacent the transformer. The transmitter unit further having a first communication device configured to transmit a phase identification signal indicating at least one electrical phase detected on one of the three conductors. The receiver unit has a first output lead configured to removably couple at the open end with a first conductor and a second output lead configured to couple with a second conductor. The receiver unit is configured to transmit a trace current onto the first output lead. The receiver further displays phase identification information in response to receiving the phase identification signal. | 02-13-2014 |
| 20140062456 | IDENTIFYING MULTI-PHASE DEVICES IN A TIME TRACE DISAGGREGATION PROCESS - A method of identifying multi-phase devices in a time trace disaggregation process can include detecting a multi-phase transition, identifying multi-phase devices based on the detecting, and processing the multi-phase devices separate from single-phase devices. The method can also include initializing a multi-phase array and, for each of a plurality of supply legs, determining whether a qualified transition exists. If so, the method can further include determining whether there is a pending multi-phase transition. If so, the method can further include determining whether the pending multi-phase transition is positive. If so, the method can further include creating a multi-phase instance. The method can also include storing the multi-phase instance in the multi-phase array. | 03-06-2014 |
| 20140062457 | THREE-PHASE AC PHASE SEQUENCE DETECTING METHOD AND APPARATUS - The disclosure provides a three-phase AC phase sequence detecting method, including the steps of: 1) sampling instant values of three-phase AC electrical signal in real-time; 2) converting said instant values into electrical signal components in a two-phase still coordinate system in manner of coordinate conversion; 3) performing an arc tangent calculation on the electrical signal components to obtain a output signal value; 4) executing step 1) to step 3) one or more times, so as to obtain one or more output signal values; 5) the output signal values obtained from step 3) and the one or more output signal values obtained from step 4) composing a periodic function, if the periodic function is a increasing function within one minimum positive period, the three-phase AC phase sequence is decided to be positive sequence; otherwise, negative sequence. Three-phase AC phase detecting a detecting apparatus using the above detecting method is also provided. | 03-06-2014 |
| 20140167735 | IDENTIFYING PHASE CONNECTIONS IN AN ELECTRIC DISTRIBUTION SYSTEM - Electrical power may be delivered to nodes in a network with a phase that is selected from a plurality of phases. According to various embodiments, the phase with which electrical power may be delivered to a particular node may be determined by varying, or identifying a variation in, the voltage of the electrical power that is delivered to a subset of nodes that is associated with a known phase. A variation in a voltage of the electrical power that is received by the particular node may also be identified. The phase with which the particular node is associated may be determined by correlating the identified voltage variation in the electrical power delivered to the subset of nodes that is associated with the known phase with the identified voltage variation in the electrical power received by the particular node. | 06-19-2014 |
| 20140239939 | METHOD AND DEVICE FOR ANALYSING THE QUALITY OF THE ELECTRICAL ENERGY IN A THREE-PHASE ELECTRIC NETWORK - A method for analyzing quality of electrical energy in a three-phase electric network, the method including: measuring a set of electrical magnitudes, the set including one electrical magnitude per phase; forming a space vector from an instantaneous three-dimensional transformation of the set of measured electrical magnitudes; and determining a set including at least one parameter representative of the quality of the electrical energy in the three-phase electric network, according to the space vector. | 08-28-2014 |
| 20140285179 | Control System For Multi-Phase Rotary Machines - A method and a control system for a multiphase-phase inverter system, the control system comprising an electric current detection circuit and a processor, wherein each phase of an electrical cycle is separated into a plurality of sections, inputs from the electric current detection circuit are received, each input indicating a measured phase current, and a phase current is calculated in each section, wherein the phase current calculation in at least one of the sections is determined from a changing ratio of the value of the phase current calculated from the measured values of the other phase currents in the multiphase system and the measured value of the phase. | 09-25-2014 |
| 20150323582 | Methods and devices for determining a phase to which a receiver device is connected in a polyphase electric power supply system - A polyphase electric power supply system via which powerline communications are set up between a transmitter and a receiver. The transmitter: detects a first zero-crossing of an alternating electrical signal on a phase connected to the transmitter; determines a first instance when the transmitter is expected to transmit a dataset; determines a first time difference between the first zero-crossing and the first instance; includes in the data set information of the phase to which the transmitter is connected, when the first time difference is below a predefined threshold. The receiver: detects a second zero-crossing of the alternating electrical signal on the phase connected to the receiver; detects a second instant when the receiver receives the data set; determines a second time difference between the second zero-crossing and the second instant; determines the phase connected to the receiver, from the second time difference and the transmitter phase information. | 11-12-2015 |
