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5757results about "Power supply testing" patented technology
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Method for Automatically Testing the Operational Status of a Wireless Power Receiver in a Wireless Power Transmission System
ActiveUS20160054396A1Circuit arrangementsError detection/correctionElectric power transmissionEngineering
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.
Owner:ENERGOUS CORPORATION
Method and apparatus for detecting impairment of a solar array
Owner:ENPHASE ENERGY
Inductive power supply with device identification
ActiveUS20080157603A1Simple methodEfficient powerCircuit authenticationNear-field transmissionInduction fieldResonance
An inductive power supply system to identify remote devices using unique identification frequencies. The system includes an AIPS and a tank circuit capable of inductively providing power to a remote device at different frequencies, and a sensor for sensing the reflected impedance of the remote device at tank circuit. The system further includes a plurality of different remote devices, each having a unique resonance frequency. In operation, the AIPS is capable of identifying the type of remote device present in the inductive field by applying power to a remote device at a plurality of unique identification frequencies until the remote device establishes resonance in response to one of the identification frequencies. The AIPS includes a controller that recognizes when resonance has been established by evaluating sensor data, which is representative of the reflected impedance of the remote device. Once the identity of a remote device is determined, the AIPS may pull operating parameters for the remove device from memory to ensure efficient operation and to assist in recognizing fault conditions.
Owner:PHILIPS IP VENTURES BV
Method and apparatus for detection and control of dc arc faults
ActiveUS20110019444A1Testing dielectric strengthPhotovoltaic monitoringReliability engineeringElectric arc
A method and apparatus for managing DC arc faults. At least a portion of the method is performed by a controller comprising at least one processor. In one embodiment, the method comprises analyzing a signature of a signal of a power converter and determining, based on analysis of the signature, whether an arc fault exists.
Owner:ENPHASE ENERGY
Systems and Methods for Automatically Testing the Communication Between Wireless Power Transmitter and Wireless Power Receiver
ActiveUS20160054395A1Error detection/correctionCircuit arrangementsElectric power transmissionElectric power
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.
Owner:ENERGOUS CORPORATION
APU troubleshooting system
InactiveUS6122575AVehicle testingRegistering/indicating working of vehiclesDisplay deviceAuxiliary power unit
A system, method, and computer program product assist a technician in troubleshooting an aircraft auxiliary power unit (APU). A portable computer is couplable of download the fault data captured in a memory of the ECU. The fault data corresponds to one or more instances of APU failure. The computer is further programmed to compare the fault data to predetermined fault patterns stored in a database. Each record of the database has one of the fault patterns, a corresponding fault indication, and a corresponding service recommendation indication. The computer is further programmed so that when a record in which the fault pattern matches the fault data is found, the corresponding fault indication and service recommendation are retrieved from the database and provided to the technician via the computer's display or other suitable output mechanism.
Owner:HAMILTON SUNDSTRAND CORP
Method and apparatus for detection and control of dc arc faults
A method and apparatus for managing DC arc faults. At least a portion of the method is performed by a controller comprising at least one processor. In one embodiment, the method comprises analyzing a signature of a signal of a power converter and determining, based on analysis of the signature, whether an arc fault exists.
Owner:ENPHASE ENERGY
Method and system for monitoring power supplies
InactiveUS7184905B2Batteries circuit arrangementsElectric devicesElectrical batteryElectric power system
An electrical power (AC / DC) monitoring system remotely monitoring batteries and electrical power systems through a call center, providing continual monitoring, monthly reports, near real time viewing and service response. Modular by design, a plurality of individual input modules, which receive an analog voltage input, convert this signal to a digital format and send the digital signal to a central control which collects the data, then, at scheduled intervals, sends the collected data to a web server which contains the main software for the system. This software performs data comparisons, charts trends, predicts failures, plans and schedules service visits, then archives the data for future references. Alarm notifications are provided to the customer via Email, office phone (land line), cell phone (wireless), PDA, pager, etc. and can also be sent to a service provider to initiate the service response.
Owner:STEFAN DONALD A
System and Method for Exchangeable Capacitor Modules for High Power Inverters and Converters
ActiveUS20130094262A1Facilitate notificationAc-dc conversion without reversalCapacitor testingElectric power transmissionTransverter
A method of and system for monitoring condition of a large capacitor connected across an output of a rectifier circuit in an operating electrical power transmission circuit in order to anticipate capacitor failure and facilitate appropriate corrective action is disclosed. The method includes measuring a ripple voltage on the capacitor and ripple current through the capacitor, determining from a representative signal whether the signal exceeds a predetermined threshold; and sending an output to a controller on a system operator if the signal exceeds the predetermined threshold. The ripple current and ripple voltage measurements may be provided as inputs to a digital to analog converter which produces and sends the representative signal to a microprocessor to generate the output to the controller.
Owner:NEWLIGHT CAPITAL LLC
Method and device for predicting electrolytic capacitor defects, converter and uninterruptible power supply equipped with such a device
A method and device for predicting defects of a capacitor, the method including determining the ripple voltage (Udc), the temperature (TP), and the current (Ic) of the capacitor, determining the value of an equivalent series resistance (ESR) of the capacitor, and the capacitance value (C) of the capacitor using a digital filter, determining information representative of the state of aging of the capacitor according to the temperature of the capacitor, and displaying that information and information representative of the value of the capacitance (C) and / or information representative of a cause associated with the state of aging according to the capacitance value. The device may include a converter and an uninterruptible power supply.
Owner:MGE UPS SYST
Method and system for monitoring power supplies
An electrical power (AC / DC) monitoring system remotely monitoring batteries and electrical power systems through a call center, providing continual monitoring, monthly reports, near real time viewing and service response. Modular by design, a plurality of individual input modules, which receive an analog voltage input, convert this signal to a digital format and send the digital signal to a central control which collects the data, then, at scheduled intervals, sends the collected data to a web server which contains the main software for the system. This software performs data comparisons, charts trends, predicts failures, plans and schedules service visits, then archives the data for future references. Alarm notifications are provided to the customer via Email, office phone (land line), cell phone (wireless), PDA, pager, etc. and can also be sent to a service provider to initiate the service response.
Owner:STEFAN DONALD A
Devices and methods for analyzing spatter generating events
ActiveUS20130262000A1Quality improvementArc welding apparatusPower supply testingEngineeringElectrical current
A method for monitoring a spatter generating event during a welding application. The method includes capturing data that corresponds to a welding current of the welding application. The method also includes detecting parameters associated with a short circuit from the captured data. The method includes analyzing the detected parameters to monitor the spatter generating event during the welding application.
Owner:ILLINOIS TOOL WORKS INC
Safety Shutdown System for Photovoltaic Power Generators
ActiveUS20160036235A1Allow accessEasily incorporated into new PVDc network circuit arrangementsBatteries circuit arrangementsPhotovoltaic generatorActuator
A photovoltaic power generator with safety shutdown system includes a plurality of solar panel strings, a combiner, and a plurality of solar safety switches electrically disposed between a plurality of DC outputs of the plurality of solar panels strings and a plurality of DC inputs of the combiner. Each solar safety switch is associated with one of the solar panel strings and includes a solid-state device and a close actuator. The solid-state device of each solar safety switch is connected between the positive and negative terminals of the DC output of its associated solar panel string. The close actuator in each solar safety switch controls whether its associated solid-state device is turned on or is turned off. During normal operating conditions, the close actuators prevent their respective solid-state devices from turning on. However, in the event of a fire, the close actuators cause their associated solid-state devices to turn on, thereby effectively short-circuiting the DC outputs of their associated solar panel strings and preventing the solar panel strings from producing high voltages.
Owner:GETSLA ROBERT
Control apparatus for multi-phase rotary machine and electric power steering system
ActiveUS20110074333A1Smooth rideInhibition effectCommutation monitoringDC motor speed/torque controlBrake torqueElectric power steering
A control apparatus for a multi-phase rotary machine includes a control unit and a plurality of power supply systems including respective inverter units. When a short-circuiting failure occurs in one of the systems due to an ON-failure in any one of FETs in an inverter unit of the failure system, the control unit stops driving of the rotary machine by bringing all the FETs in the failure system into the OFF state. The control unit controls FETs of the non-failure system such that a brake torque generated in the failure system is cancelled or the influence of the brake torque exerted on the driving of the motor is reduced.
Owner:DENSO CORP
Photovoltaic device for measuring irradiance and temperature
A solar array system includes a plurality of power-generator modules, each power-generator module having an identical form factor and comprising a plurality of photovoltaic cells wired for power generation. The system also includes at least one sensor module having a substantially identical appearance and form factor as the power-generator modules and comprising a like plurality of photovoltaic cells. The operational state of the system is monitored by an array performance monitor, which measures signals sent from the various modules. At least one photovoltaic cell in the sensor module delivers a short-circuit current signal to the array performance monitor and at least one photovoltaic cell in the sensor module delivers an open-circuit voltage signal to the array performance monitor. These signals are used to calculate a theoretical power output of the array system, which is compared to the actual power output.
Owner:DOW GLOBAL TECH LLC
System and method for monitoring an electrical network
An energy monitoring system which in preferred embodiments employs at least one nodal junction receiving and creating data by analog to digital conversion from a plurality of local node sensors. Data accumulated by the nodal junction is used for analysis of wave patterns to detect anomalies in the local electrical network and / or loads connected to the local electrical network. Anomalies can be detected in various ways, including: comparison of data with historical data acquired from the local node sensors; comparison of data with known wave pattern profiles for similar loads; and comparison of data with data acquired from local node sensors at other locations. Thus, the accumulation of data in the system of the invention provides the ability to perform comparative analysis to a baseline or standard, and also the ability to perform comparative analysis at an enterprise level across different target locations.
Owner:CIRCUITMETER
Comparible diagnostics for renewable energy power systems
ActiveUS20100219983A1Performance savingQuick fixGeneration forecast in ac networkElectric signal transmission systemsElectric power systemTransport engineering
A computer processor implemented method of measuring, monitoring, comparing and diagnosing the power generated of at least two renewable power systems provided to at least two consumers and alerting at least one of consumers in the event of comparative underperformance, the method taking into account at least two diagnostic variables including weather and the renewable power system cover status (such as covered by snow), wherein the at least one data server determines comparative information for a predetermined geographic area based upon at least two diagnostic variables, and at least two normalized performances to provide a comparative value; and informing the consumer of the comparative value in the event of an underperforming comparative value.
Owner:LOCUS ENERGY
Inductive power supply with device identification
ActiveUS7989986B2Improving ease and convenience of useLow costCircuit authenticationNear-field transmissionResonanceEngineering
Owner:PHILIPS IP VENTURES BV
Switching power supply and no-load control circuit and no-load control method thereof
The invention discloses a switching power supply and a no-load control circuit and a no-load control method thereof. The switching power supply comprises a switching circuit for providing an electric signal for a load. The no-load control circuit comprises a no-load detection circuit and a reloading detection circuit, wherein the no-load detection circuit is electrically coupled to the load and is used for judging whether the switching power supply enters a no-load state or not and generating a no-load signal; the reloading detection circuit is used for outputting a current to the load after the no-load state is detected by the no-load detection circuit and comparing voltages at both ends of the load with a third threshold value so as to detect whether the load is switched in and generatea reloading signal; and the switching circuit is closed when the no-load state is detected by the no-load detection circuit and is recovered to normally work when the load is detected to be switched in by the reloading detection circuit.
Owner:CHENGDU MONOLITHIC POWER SYST
Testing system for solar cells
InactiveUS20060103371A1Improve refinementShorten cycle timePhotovoltaic monitoringElectronic circuit testingElectricityElectrical battery
A testing system for optical and electrical monitoring of a production quality and / or for determining optical and electrical properties of solar cells, comprising a first conveyor device for conveying the solar cells to a test region, a second conveyor device for moving the solar cells through the test region, a third conveyor device for conveying the solar cells out of the test region, an optical checking device located in the test region for visual checking of the solar, and an electrical checking device also located in the test region for checking electrical functions of the solar cells, the electrical checking device including an illumination device for shining light on light-sensitive surfaces of the solar cells and also including an electrical contacting device for picking up voltages and / or currents and electrical contacts of the solar cells, the first, second and third conveyor devices including a common, linear conveyor belt system which passes through the test region and has a vacuum suction device for holding the solar cells on a surface of a conveyor belt system.
Owner:MANZ AUTOMATION
Aging status diagnostic apparatus for power conversion system, and method their of
InactiveUS20100161259A1Easy to installAchieve reliabilityEmergency protective circuit arrangementsCapacitor testingPower inverterHarmonic
The present invention relates to an apparatus capable of diagnosing the aging state of a power conversion system at ordinary times and its diagnosing method to ensure the reliability of a power conversion system. The apparatus includes a current sensing means for detecting the output current of a inverter switching module or an electrolytic capacitor, and measurement and diagnosis means for extracting elements related to the aging status of the power conversion system by receiving the output current waveform of the inverter switching module and magnitude of each harmonic or an impedance voltage signal of the electrolytic capacitor. Furthermore, it is preferable that the apparatus further includes a measurement current generation means for generating measurement current to be supplied to the electrolytic capacitor. By analyzing an average value or the magnitude of harmonics by FFT analysis of the output current waveform of the inverter switching module and measuring an ESR value or a loss angle tan δ of a DC bus of the power conversion system, the present invention is able to monitor and diagnose the abnormal state attributable to the aging or degradation of the power conversion system in advance.
Owner:POWERTRON ENG
UAV Constraint in Overhead Line Inspection
FIG. 1 shows airframe 10 with electromagnetic field sensor 12, adjustable reference electromagnetic field strength 14, comparator 16, parachute 18, parachute trigger 19, and inspection camera 20 inspecting a transmission line corridor containing towers 40, 42, and 44, phase conductors 46, 48, and 50, and shield wires 52 and 54. Reference electromagnetic field strength 14 is adjusted before the flight to set the minimum electromagnetic field strength before parachute trigger 19 deploys parachute 18. The reference electromagnetic field strength 14 corresponds to a radius, and thus virtual tunnel 22, outside of which airframe 10 cannot fly without deploying parachute 18, regardless of the state of the autopilot, GPS signal, or radio link.
Owner:VAN CRUYNINGEN IZAK JAN +1
Testing device and testing method of flexible direct-current transmission modular multilevel converter (MMC) converter valve operating
ActiveCN103197241ACancel harmonicsReduce Harmonic PollutionAc-dc conversionPower supply testingTransformerPhase difference
The invention discloses a testing device and a testing method of flexible direct-current transmission modular multilevel converter (MMC) converter valve operating. Large current needing to be checked is produced through energy exchange between two groups of valve module submodule capacitors and a load electric reactor, accurate alternating current-direct current overlaying current stress can be obtained through respective adjustment of alternating component amplitude and phase difference of output voltage of two valve modules, and adjusting modes are simple and flexible. A charging source is only used for building working voltage of two sample valve submodules at the beginning of the test, energy supplementation power sources are used for building working voltage of two auxiliary valves at the beginning of the test, only less active loss is supplemented in the test process later, the two energy supplementation power sources respectively share one half of system loss, and requirements for power capacity of a test circuit are greatly lowered. In addition, the two energy supplementation power sources can offset harmonic waves of grid-connected current of the two energy supplementation power sources through difference of connection modes of transformers of the two energy supplementation power sources to a great degree, and harmonic wave pollution to power grids is reduced.
Owner:XJ ELECTRIC +1
Battery-cell converter systems
InactiveUS20130038289A1Less chargeHigh voltage outputCharge equalisation circuitDc-dc conversionElectricityElectrical connection
A battery-cell converter (BCC) management system is disclosed. The BCC system comprises one or more battery-cell converter units that are configured to provide regulated main power output from the outputs of DC / DC converters inside the battery-cell converter units. Each battery-cell converter unit comprises an electrical energy storage cell bank, one or more DC / DC converters, one or more electrical connection devices and a monitor and control module coupled to other components of the battery-cell converter unit. Multiple battery-cell converter units can be stacked in series to increase output voltage. In another embodiment, multiple battery-cell converter units can be connected in parallel to increase output current. Accordingly, the BCC management system disclosed improves battery pack usage efficiencies, increase battery pack useable time per charge, extend battery pack life-time as well as lower battery pack manufacturing cost.
Owner:TSE LAWRENCE TZE LEUNG
Differential arc fault detection
InactiveUS20080129307A1Testing dielectric strengthEmergency protective arrangement detailsEngineeringElectrical current
A method and apparatuses detect arc faults. The apparatus according to one embodiment comprises: a master node (111) for digitally detecting a current signal and a voltage signal at a first point in a wiring system (131); a slave node (122) for digitally detecting a current signal and a voltage signal at a second point in the wiring system (131); and a detection unit for detecting an arc fault in the wiring system (131) by comparing the current signals from the master node (111) and from the slave node (122), and comparing the voltage signals from the master node (111) and from the slave node (122).
Owner:HONEYWELL INT INC
Analog signal detecting circuit, and AC side current detector of semiconductor power conversion device
InactiveUS6181587B1Conversion with intermediate conversion to dcDc-dc conversionCarrier signalAnalog signal
Conventionally, there is a problem that it is impossible to provide an analog signal detecting circuit having high reliability and long lifetime under a bad environment since a photocoupler is used for electrical insulation of a digital signal. Then, an analog signal detecting circuit is provided with a carrier wave generating unit for generating a carrier wave, a pulse width modulating unit for pulse width modulating an analog signal inputted from the signal input terminal by using the carrier wave generated by the carrier wave generating unit and for outputting a digital signal, a reverse level shift HVIC for transmitting the digital signal from one power supply system to the other power supply system, and a demodulation unit for demodulating the digital signal transmitted to the other power supply system into an analog signal and for outputting it to a signal output terminal. As a result, even in the case where reference potentials are different from each other at signal input / output terminals, an analog signal can be detected.
Owner:MITSUBISHI ELECTRIC CORP
AC/DC monitor system
A combined AC / DC monitoring system simultaneously monitors an AC power supply and a DC power supply in a mobile unit. The monitoring system is electrically isolated from an AC input source through an AC isolation transformer. A microcontroller digitally provides various computed variables from various digitized input signals. The monitoring system simultaneously displays a plurality of the computed variables while the system monitors for various user-selected high / low conditions of the computed variables. The system monitors AC power surges and can alternately displays a high voltage level for a predetermined time and a low voltage level for a predetermined time. An algorithm determines whether the AC voltage is a true sine wave or otherwise. The system monitors DC current on the high side, or positive terminal, of a battery. User selectable DC shunts are provided to measure a range of DC currents.
Owner:VENA ENG CORP
General-purpose automatic test system for locomotive switching power supply and method thereof
The invention relates to a general-purpose automatic test method for a locomotive switching power supply, and general-purpose automatic test system, and comprises a test control system, a programmable power supply unit, a programmable DC load unit and a programmable data acquisition unit, wherein the programmable power supply unit is connected with the test control system through a GPIB bus and provides excitation for the tested switching power supply; the programmable DC load unit is connected with the test control system through the GPIB bus and provides a load for the switching power supply to be tested; and the programmable data acquisition unit is connected with the test control system through the GPIB bus and acquires responses of the tested switching power supply. The output voltage, voltage regulation factor, load regulation factor and the like are tested by logging in virtual instrument software on a personal computer. The invention can well overcome the defects of insufficient compatibility, high complexity and low reliability of the test system in the prior art, and has the advantages of automation, general purpose, convenient operation and reliable performance.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD
State of Health Estimation of Power Converters
Systems, methods and devices which utilize Spread Spectrum Time Domain Reflectometry (SSTDR) techniques to measure degradation of electronic components are provided. Such measurements may be implemented while the components “live” or otherwise functioning within an overall system. In one embodiment, monitoring a power converter in a high power system is accomplished. In this embodiment, degradation of components within the power converter (e.g. metal-oxide-semiconductor field-effect transistors (MOSFETs), capacitors, insulated-gate bipolar transistors (IGBTs), and the like) may be monitored by processing data from reflections of an SSTDR signal to determine changes in impedance, capacitance, or any other changes that may be characteristic of components degrading. For example, an aging MOSFET may experience an increase of drain to source resistance which adds additional resistance to a current path within a power converter. Such a change is able to be analyzed monitored upon processing the reflected test signals.
Owner:UNIV OF UTAH RES FOUND
Solar photovoltaic panel and solar photovoltaic system
InactiveUS20150318410A1Easy to collect informationEasy to identifySpatial transmit diversityPhotovoltaic monitoringTransmitterPhotovoltaics
A solar photovoltaic panel disposed in a matrix for use, wherein the solar photovoltaic panel comprises a plurality of antennas configured to communicate with antennas placed on adjoining solar photovoltaic panels, a receptor configured to receive a search command via the plurality of antennas, a transmitter configured to transmit a search command from the antennas excluding the antenna having received the search command in response to the received search command, and a responder configured to create a response signal including the panel ID of its own solar photovoltaic panel and transmit the response signal from the antenna having received the search command when no response signal to the search command transmitted from the transmitter is received, and when a response signal to the search command transmitted from the transmitter is received, transmit the response signal with the addition of information from the antenna having received the search command.
Owner:MITSUBISHI ELECTRIC CORP
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