Pump control system with isolated AC voltage detector

Time based AC line detection

Noise detection circuit

Variable frequency drive self-check

Bi-polar triac short detection and safety circuit

Detecting faults in turbine generators

Power converter controller

Inverter device

Power supply system and control method thereof

Semiconductor apparatus and power conversion apparatus

WIRELESS REMOTE POWER EQUIPMENT TEST SYSTEM AND METHOD OF USING SAME

SYSTEM AND METHOD FOR MONITORING AN ELECTRICAL NETWORK

Short-circuit detection device and method used in inverter circuit

METHOD OF REDUNDANT MONITORING AND PROTECTION OF AC POWER GENERATION CHANNELS

Ultralight switched-mode power supply device and method of use thereof

Circuit for measuring power violations using high side current sensing

Switched reluctance motor double-switch power converter that identifies fault of a node using node energy analysis

Motor control device that detects breakage of motor power line or power element abnormality of motor power conversion device

System and method for controlling a connection of a meter to a power line

System and method for controlling dynamic output impedance of an inverter

Apparatus for monitoring leakage current of transformer-less photovoltaic inverter

Automated method and apparatus for testing a crowbar circuit of a power converter

Automated method and apparatus for testing a power converter

Methods and apparatus for sensing ground leakage and automated self testing thereof

Device and method for early detection of power failure in an external power supply

Precision measurement of voltage drop across a semiconductor switching element

Motor drive device including function to detect failure in insulation resistance deterioration detection unit of motor, and failure detection method

Ground quality check systems and methods

Load detecting device

Twelve-pulse autotransformer rectifier units

Power conversion device and method for diagnosing failure thereof

Power monitoring systems and methods

Filter capacitor degradation identification using computed power

Methods and devices for selective insulation monitoring in underground IT power supply systems

Systems and methods for testing motor drives

ELECTRICAL ACTIVITY SENSOR DEVICE FOR DETECTING ELECTRICAL ACTIVITY AND ELECTRICAL ACTIVITY MONITORING APPARATUS

Power control device

Switchgear for a single-phase motor and a three-phase motor

Filter capacitor degradation identification using computed current

Monitoring the operating conditions of electric generators and motors by partial measurements

Sensing device, power reception device, power transmission device, non-contact power transmission system, and sensing method

Method for diagnosing a frequency converter

System and method for a power meter to communicate through a power line

Load testing apparatus

Method and system of diagnosing breakdown during pre-charging

System and method for communicating over power lines

System and method for stabilizing aircraft electrical systems

Impedance detector apparatus and method

Grid diagram creation and operation control

Power conversion device including abnormality detection function of LC filter

DC voltage detector and power converter using the same

Motor control device

Ground fault detecting circuit and power converting device including the same

Battery charger module for charging a vehicle battery and method for determining a state of an AC power supply at a battery charger module

Power supply current monitoring device

Method and apparatus for detecting AFE filter capacitor degradation

Method for checking a separation point of a photovoltaic inverter, and photovoltaic inverter

HRG ground fault detector and method using phase inputs to generate a simulated neutral voltage

Power source arrangement and method of diagnosing a power source arrangement

Insulation resistance measurement for inverters

POWER SUPPLY MONITORING SYSTEM

Diagnostics for systems including variable frequency motor drives

Calibration of current sensors in parallel power converters

System and method for detecting generator incipient failures

Dispersed state monitoring device for distributed generation

Method and apparatus for monitoring an electric power circuit

Circuit arrangement

Test system and method for testing high-voltage technology

Inverter with extended endurance memory

Multiphase regulator with self-test

Power conversion system, and voltage detection device thereof

Ground fault detection apparatus

Optimized Power Supply Architecture

Fault detection device for inverter system

Voltage detection device

Alarm signal generator circuit and alarm signal generation method

Method and apparatus for detecting a current in a rotating system

Methods and apparatus for active front end filter capacitor degradation detection

Circuit and method for detecting missed commutation of a brushless DC motor

Impulse voltage generation device

System and method for managing DC link switching harmonics

Methods and systems for calibrating a resonant converter

System and method for improved accuracy in battery resistance measurement systems

Battery cell unit comprising a battery cell and a monitoring and actuation unit for monitoring the battery cell and method for monitoring a battery cell

Electronic control circuit comprising power transistors and method for monitoring the service life of the power transistors

Method and sensor for sensing current in a conductor

Method and sensor for sensing current in a conductor

Three-phase detection module

Generator-fault-tolerant control for a variable-speed variable-pitch wind turbine

Apparatus for testing switching of power semiconductor module

Methods of testing unInterruptible power supply (UPS) systems with multiple UPS modules

AC signal detector and the method thereof

System and method for detecting a grid event

Drive failure protection

Apparatus for estimating capacitance of DC-link capacitor in inverter

Self-diagnostics within power electronics

Electronic power circuit, electric motor, and procedure for checking the operability of an electronic power circuit

Wind turbine fault detection circuit and method

Electrical device with a pulsed power supply and method for testing the power supply of the electrical device

Test system for determining a frequency response of a virtual power plant

Semiconductor module

Apparatus for estimating capacitance of DC-link capacitor in inverter

Apparatus and method for out-of-step protection using the analysis of trajectories of electrical measurements in state plane

Capacitor-based UPS

Systems, methods, and devices for capacitance estimation of power capacitors

Apparatus for diagnosing DC link capacitor of inverter

Method and arrangement for an internal failure detection in a Y-Y connected capacitor bank

AC active load

Electric power steering system and method for checking initial driving thereof

Method and controller for an electric motor with switch testing

Filter capacitor degradation detection apparatus and method

Method and system for measuring the integrity of a power converter

POWER SUPPLY EFFICIENCY MEASUREMENT DEVICE

SYSTEM AND METHOD FOR REDUCING REACTIVE CURRENT IN POWER CONVERTER BURN-IN TESTS

Inverter test apparatus

Frequency converter and method for identifying and blocking a fault current in a frequency converter

Fault identification techniques for high resistance grounded systems

Wind farm harmonic predictor and method for predicting harmonics

Hall electromotive force signal detection circuit and current sensor thereof

Method for operating a brushless electric motor

Low-voltage testing device for high-voltage frequency converter of serial superposition voltage type

Adaptive sampling circuit for detecting the demagnetized voltage of the transformer

Inverter

Apparatus and method for detecting failure of switching device in inverter

System and method for detecting phase loss and diagnosing DC link capacitor health in an adjustable speed drive

System and method for managing DC link switching harmonics

LED lamp driver identification

Power source arrangement and method of diagnosing a power source arrangement

System and method for exchangeable capacitor modules for high power inverters and converters

Circuit arrangement

Device and method for detecting crowbar circuit in wind turbine

Source Power Anomaly and Load Power Consumption Monitoring and Analysis

EVALUATION BOARD

Sensing device, power reception device, power transmission device, non-contact power transmission system, and sensing method

Hum noise detection device

Potential arc fault detection and suppression

Method and apparatus for detecting power converter capacitor degradation using negative sequence currents

Fault detection system for a generator

HIGH-VOLTAGE SYSTEM FOR A MOTOR VEHICLE AND METHOD FOR DIAGNOSING A HIGH-VOLTAGE SYSTEM FOR A MOTOR VEHICLE

Power conversion device

Overvoltage prevention in an aircraft electrical power generation system

COMPOUND TEST METHOD OF HIGH VOLTAGE DIRECT CURRENT TRANSMISSION CONVERTER VALVE

Alternating current voltage detection circuit

APPARATUS FOR DETECTING INPUT PHASE MISSING AND METHOD THEREOF

Inverter device comprising a topology surveying a series of capacitors

Variable frequency drive and methods for filter capacitor fault detection

Method and apparatus for dealing with faults in an electrical drive system

Ground scheme identification method

System and Method for Operating Inverters

System for detecting a failure associated with an inverter or associated machine

System for detecting a short circuit associated with a direct current bus

Device for detecting a fault in an AC supply

Motor driving apparatus

Method and system for evaluating electrical connections between a motor controller and motor

Machine systems including pre-power diagnostics

Method and apparatus for detecting the existence of a safety ground

Modular line-to-ground fault identification

METHOD FOR MONITORING A DRIVE STATE OF AN ELECTRIC MOTOR

Drive failure protection

Method And Systems For Detecting Electrical Discharges In A Machine

System and method for evaluating vehicle charging circuits

Power Input Efficiency Measurement Method

Methods and apparatus for sensing ground leakage and automated self testing thereof

Method for testing the performance of a vacuum switch of a traction converter

Methods and apparatus for testing electric power devices

System and method for communicating over power lines

System and method for controlling a connection of a meter to a power line

System and method for providing power to a power meter connected to a power line

Three-phase detection module

SYSTEMS, DEVICES AND METHODS FOR PREDICTING POWER ELECTRONICS FAILURE

Inverter current measurement using a shunt resistor

Method and apparatus for detecting a location of ground faults in a motor/motor drive combination

Automated emergency power supply test with variable, priority-based transfer times

Automated emergency power supply test featuring user selection of load percentage or exhaust temperature

Automated emergency power supply test using engine exhaust temperature

Automated emergency power supply system (EPSS) test reporting criticality of EPSS test failure

Methods and apparatus for motor emulation

Zero ampere level current data correction for a power device under test

Method and system for registering events in wind turbines of a wind power system

Method and circuit for testing a power producer or a power consumer which can be connected to a power grid

Methods and apparatus for resistive voltage sensing in an isolated power distribution unit

Power semiconductor device current detector circuit and detection method

Semiconductor test device, semiconductor test circuit connection device, and semiconductor test method

Wiring testing device

Control apparatus for rotary electric machines

System and method for detecting generator incipient failures

Tracking current through switching devices

Parallel motor drive disable verification system and method

Variable frequency drive and methods for filter capacitor fault detection

Method for operating a brushless motor

Fault current test equipment of direct current thyristor valve

Measuring of earth fault current

Method and system for testing wind turbine plants

Method for calibrating a motor control circuit to improve temperature measurement in an electrical motor

Method for monitoring a controller of a three-phase electric motor and/or the electric motor

MOTOR DRIVING APPARATUS EASILY ANALYZABLE FOR CAUSE OF FAULT

Method and apparatus to monitor an electric motor control circuit

AC power supply measuring circuit with voltage protecting function

METHOD FOR DETECTING CAPACITY LEAKAGE OF CAPACITOR IN POWER CONDITIONER, POWER CONDITIONER PERFORMING THE SAME, AND PHOTOVOLTAIC POWER SYSTEM PROVIDED WITH THE SAME

Motor driving device having power failure detection function

Power supply testing system

Motor driving device, electric power steering device using the same and method for detecting failure in the same

Ground fault detection system and method

Switching device failure detection system and method for multilevel converters

Drive control device for an electric load

Method and apparatus to measure current in power switchers

Control apparatus for multi-phase rotary machine and electric power steering system

Method of detecting a fault condition of a load control device

CURRENT LEAKAGE DETECTOR OF CONSTRUCTION MACHINE

Method for verifying the bandwidth and phase of a digital power control system

Method for fault detection in controlling a rotary field motor

Method and system for testing electric automotive drive systems

Detection of a load state of a half-bridge

Methods, systems and apparatus for detecting abnormal operation of an inverter sub-module

System and method for monitoring the state of health of a power electronic system

Energy management for an electronic device

Power supply testing system

Method for calibrating a motor control circuit to improve temperature measurement in a electrical motor

Method and system for monitoring the condition of capacitors in a DC-voltage intermediate circuit

Method and kit for testing 3-phase supplies onboard of an aircraft

Method and system for registering events in wind turbines of a wind power system

Systems and methods involving motor drive ground fault interrupts

Inverter device and X-ray high-voltage device using the inverter device

Fault detection circuit

Robust AC chassis fault detection using PWM sideband harmonics

Diagnostic Method For Load-Testing Self-Excited Three-Phase Generators in a Motor Vehicle

System and method for testing power transistors

Current measurement in an inverter unit and a frequency converter

System and method for power system parameter measurement

Power supply monitoring system

Contactor status detection in power inverters

Inverter device

Method and apparatus for determining state of inverter capacitor in an electric drive

Method and apparatus for detecting phase current imbalance in a power generator

Method of detecting a sustained parallel source condition

Electric motor control apparatus

Method for testing H-bridge

Dry-type high-voltage load system apparatus and method of preventing chain breaking and arc discharge for use therewith

Controller for motor, and vehicle

Method and system for calibrating a motor control circuit to improve temperature measurement in an electrical motor

Dry-type high-voltage load system apparatus and method of preventing chain breaking and arc discharge for use therewith

Short circuit phase identification method

Upgradable test set

Apparatus and systems for common mode voltage-based AC fault detection, verification and/or identification

System and method for fault isolation and leakage current detection

Motor control apparatus

Three-phase detection module

Control apparatus

Polyphase source detecting circuit

Ground fault detection circuit for use in high voltage motor drive applications

Device for simulating rectified constant impedance load and method thereof

METHOD AND APPARATUS FOR DIAGNOSING INVERTER LINKAGES

Apparatus and method to detect failure of smoothing electrolytic capacitor

Abnormality detecting device of electric power converting device and abnormality detecting method

Method for measuring a motor current

Power supply device, electrically-driven vehicle incorporating power supply device, and method of controlling power supply device

Testing system for power supply

Method for operating a two-phase rotary current controller

Sensor calibration and parameter identification in a multi-phase motor drive

Detection method for an electrical polyphase machine

System for assured reliability in DC to AC power converters

LIGHT SOURCE SIMULATING DEVICE

Power supply apparatus with function of detecting abnormality of current sensor

Circuit arrangement and method for insulation monitoring for inverter applications

Methods for detecting and classifying loads on AC lines

Method for measuring the insulation resistance in an IT network

Generator regulator having a diagnostic function for semiconductor components

METHODS AND APPARATUS FOR TESTING POWER GENERATORS

Window comparator of an A.C. voltage

Power conversion apparatus

Arrangement for testing a power output stage

Voltage verification unit

Inverter system

Anomaly detection in inverter system

On-line transformer condition monitoring

Circuit for measuring inrush current

Power generation unit condition monitor using frequency profile analysis

Method and circuit arrangement for monitoring the mode of operation of one or more load circuits, especially of a domestic appliance

Loop impedance meter

Regenerative load bank with a motor drive

Method and apparatus for real time monitoring of an electric furnace heating coil

Methods and apparatus for testing power generators

Dry-type high-voltage load system device and method for preventing chain disconnection/arc discharge of the device

Circuit arrangement and method for determining the load current through an inductive load connected to a supply voltage in a clocked manner

Current over-flow detector for motor driving circuit

Loading device

Ride through in electronic power converters

Bi-polar triac short detection and safety circuit

FPGA configured vector network analyzer for measuring the z parameter and s parameter models of the power distribution network in FPGA systems

AC power monitoring and parameter determination