ClassID:

216817

H02H7/122 - CPC Classification

Classification description:

Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters

Sub-classes:
Recent Application in this class:
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AUXILIARY RESONANT COMMUTATED POLE (ARCP) DEVICE AND OPERATING METHOD THEREOF

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2026-05-21

HOME APPLIANCE HAVING TEMPERATURE SENSOR ARRANGED FOR PREVENTING OVERHEATING OF POWER MODULE

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20260088657
2026-03-26

POWER SUPPLY DEVICE

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2026-03-26

Photovoltaic Inverter and Photovoltaic String Protection Method

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2026-01-22

INVERTER CIRCUIT, DRIVE CIRCUIT, CONTROL DEVICE, REFRIGERATION CYCLE DEVICE, CONTROL METHOD, AND PROGRAM

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20260002968
2026-01-01

POWER CONVERTER AND DETECTION METHOD THEREOF

#7
20250350110
2025-11-13

STORAGE SYSTEM CONFIGURED FOR USE WITH AN ENERGY MANAGEMENT SYSTEM

#8
20250338632
2025-10-30

SWITCHING DEVICE WITH PASSIVE OVERCURRENT PROTECTION

#9
20250309786
2025-10-02

SELF-BIASING INVERTER AND CONTROL METHOD THEREOF

#10
20250293508
2025-09-18

SEMICONDUCTOR APPARATUS AND CONTROL SYSTEM

#11
20250286482
2025-09-11

Functional Safety Supervision of Electric Power System

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20250283956
2025-09-11

POWER CONVERSION APPARATUS AND INSULATION IMPEDANCE DETECTION METHOD

#13
20250233426
2025-07-17

CONNECTABLE POWER STATIONS

#14
20250183789
2025-06-05

METHOD FOR DETERMINING THE STATE OF AN INVERTER

#15
20250174978
2025-05-29

OVERCURRENT PROTECTION APPARATUS AND PROTECTION METHOD FOR T-TYPE THREE-LEVEL INVERTER

#16
20250112453
2025-04-03

METHOD FOR CONTROLLING AN INVERTER COMPRISING SELECTING A SAFETY MODE

#17
20250088121
2025-03-13

ELECTRIC-POWER CONVERSION APPARATUS

#18
20250055272
2025-02-13

FAULT DETECTION METHODS AND DEVICES FOR PULSE WIDTH MODULATION CONVERTERS

#19
20240388216
2024-11-21

POWER CONVERSION SYSTEM AND PROGRAM

#20
20240283240
2024-08-22

ELECTRONIC CIRCUITRY, METHOD, COMPUTER PROGRAM, AND ELECTRONIC SYSTEM

#21
20240250606
2024-07-25

POWER CONVERSION SYSTEM

#22
20240213762
2024-06-27

Power conditioning system supporting hot swapping and control method of power conditioning system

#23
20240195324
2024-06-13

POWER SUPPLY APPARATUS

#24
20240146050
2024-05-02

Auxiliary circuit to inject fault current during grid faults

#25
20240120747
2024-04-11

Connectable power stations

#26
20240120732
2024-04-11

SYSTEM AND METHOD FOR POWER STATION CONTROL BASED ON TOTAL HARMONIC DISTORTION

#27
20240055853
2024-02-15

CIRCUIT PROTECTION METHOD, SYSTEM AND APPARATUS

#28
20240030703
2024-01-25

FAULT PROTECTION APPARATUS AND PHOTOVOLTAIC INVERTER

#29
20230420930
2023-12-28

Isolated gate driver, traction inverter, and electric vehicle

#30
20230223898
2023-07-13

Safety Switch for Photovoltaic Systems

#31
20230223897
2023-07-13

Safety Switch for Photovoltaic Systems

#32
20230134016
2023-05-04

Medium-voltage photovoltaic grid-connected inverter system and photovoltaic power generation system

#33
20230054916
2023-02-23

Three-level brake chopper and method for controlling three-level brake chopper

#34
20220392726
2022-12-08

Protection system, photovoltaic system, and protection method

#35
20220278523
2022-09-01

Drain current sensing and fault protection circuit based on gate voltage for gate current driven field effect transistors

#36
20220231499
2022-07-21

Fault protection apparatus and photovoltaic power generation system

#37
20220224110
2022-07-14

Asymmetric overvoltage protection apparatus, DC circuit arrangement and DC network

#38
20220115862
2022-04-14

Control of parallel paths during recovery of a power flow control system from a transmission line fault

#39
20220029409
2022-01-27

Load drive circuit, motor drive control device, and motor unit

#40
20220014021
2022-01-13

System and method for use with microgrids having inverter-based distributed generators

#41
20220014013
2022-01-13

Power Electronic Converter with a Ground Fault Detection Unit that Shares a Common Ground with both DC Ports and AC Ports

#42
20210391709
2021-12-16

Direct current breaker feeding an inverter

#43
20210384844
2021-12-09

Control system with delayed protection for a three-level inverter

#44
20210351741
2021-11-11

Safety Switch for Photovoltaic Systems

#45
20210320492
2021-10-14

System and method for protecting inverter in vehicle from overvoltage

#46
20210313791
2021-10-07

System and method for protecting inverter in vehicle from overvoltage

#47
20210297005
2021-09-23

Threshold detection systems

#48
20210296934
2021-09-23

Protection and control of wireless power systems

#49
20210296933
2021-09-23

Protection and control of wireless power systems

#50
20210296883
2021-09-23

Grid connected inverter, and method for reducing grid frequency variation

#51
20210213834
2021-07-15

AN INVERTER CONTROL METHOD AND AN INVERTER CONTROL SYSTEM

#52
20210175703
2021-06-10

Fault clearing circuitry

#53
20210119442
2021-04-22

Protection scheme for power converters utilizing cascaded bipolar and unipolar power semiconductor devices

#54
20210083471
2021-03-18

Protection circuit

#55
20210063494
2021-03-04

Ground fault detector and power conditioner with input-side ground fault detection

#56
20210057904
2021-02-25

APPARATUS FOR PROTECTING DEVICE OF MOTOR DRIVE INVERTER

#57
20210013815
2021-01-14

Power conversion system

#58
20200274477
2020-08-27

FAULT DETERMINATION APPARATUS, MOTOR DRIVING SYSTEM, AND FAILURE DETERMINATION METHOD

#59
20200083700
2020-03-12

Semiconductor module and power conversion apparatus having a diode bridge circuit and a protection circuit

#60
20200052480
2020-02-13

Portable inverter connection control system

#61
20190379201
2019-12-12

Temperature protection circuit

#62
20190280638
2019-09-12

Inductive load control device

#63
20190280616
2019-09-12

Power conversion apparatus and control method of inverter

#64
20190199089
2019-06-27

Method for controlling an installation allowing DC current to be transmitted in a network while protecting said network from a short circuit fault

#65
20190181633
2019-06-13

Power supply system for vehicle, and control method of power supply system

#66
20190173421
2019-06-06

Safety switch for photovoltaic systems

#67
20190157859
2019-05-23

Power semiconductor module and power converter

#68
20190157857
2019-05-23

Electric working machine and voltage suppressor circuit for electric working machine

#69
20190140573
2019-05-09

Half-bridge inverter modules with advanced protection through high-side to low-side control block communication

#70
20190123546
2019-04-25

Drain current sensing and fault protection circuit based on gate voltage for gate current driven field effect transistors

#71
20190103863
2019-04-04

Driving device

#72
20190070964
2019-03-07

Locomotive regenerative electric energy feedback system with ice melting function and control method

#73
20190068062
2019-02-28

Providing adaptive output power

#74
20190052075
2019-02-14

Overcurrent trip coordination between inverter and circuit breakers

#75
20190044324
2019-02-07

Portable inverter connection control system

#76
20190006885
2019-01-03

Protection and control of wireless power systems

#77
20190006836
2019-01-03

Protection and control of wireless power systems

#78
20180306853
2018-10-25

Method and system for locating ground faults in a network of drives

#79
20180270995
2018-09-20

Managing device for cooling inverter

#80
20180269677
2018-09-20

SEMICONDUCTOR ELEMENT DRIVING DEVICE

#81
20180183426
2018-06-28

Fault and short-circuit protected output driver

#82
20180123495
2018-05-03

Half-bridge inverter modules with advanced protection through high-side to low-side control block communication

#83
20180115149
2018-04-26

Method and device for monitoring an electrical network in a rail vehicle, and rail vehicle

#84
20180109101
2018-04-19

Ground Fault Detection Architectures, Systems, Circuits, and Methods

#85
20180097441
2018-04-05

POWER CONVERSION DEVICE

#86
20180077812
2018-03-15

System and method for modular electric device having biased modular safety doors

#87
20180041138
2018-02-08

Inverter circuit and power conversion device

#88
20170365993
2017-12-21

Variable-speed constant-frequency power control

#89
20170288384
2017-10-05

Safety switch for photovoltaic systems

#90
20170271871
2017-09-21

Abnormality detection device for grid interconnection relay and power conditioner

#91
20170207621
2017-07-20

Electrical bypass apparatus

#92
20170207620
2017-07-20

Photovoltaic system and rapid shutdown method thereof

#93
20170134018
2017-05-11

Drive device for semiconductor element

#94
20170133925
2017-05-11

Overcurrent protection system and method for inverter circuit

#95
20170110980
2017-04-20

Power conversion device

#96
20170093145
2017-03-30

Semiconductor device

#97
20170070178
2017-03-09

Drive controller and drive control method for electric motor

#98
20170054285
2017-02-23

PROTECTION APPARATUS FOR AN ELECTRICAL LOAD, VOLTAGE CONVERTER COMPRISING A PROTECTION APPARATUS, AND METHOD FOR PROTECTING AN ELECTRICAL LOAD

#99
20170050525
2017-02-23

Motor drive apparatus, method of controlling motor drive apparatus, and electrically powered vehicle

#100
20160359422
2016-12-08

Method for detecting failure of soft start and variable frequency device

#101
20160359317
2016-12-08

Power conversion apparatus, method for manufacturing power conversion apparatus, and electric appliance

#102
20160344279
2016-11-24

CR snubber circuit

#103
20160336729
2016-11-17

Overcurrent detection circuit, inverter, compressor, and air-conditioning machine, and adjusting method for adjusting overcurrent detection circuit

#104
20160325777
2016-11-10

Motor control device, electric power steering device using same, and vehicle

#105
20160308461
2016-10-20

Power conversion device

#106
20160285263
2016-09-29

Anti-islanding method for distributed generator in direct current distribution grid and anti-islanding device therefor

#107
20160268948
2016-09-15

INVERTER SYSTEM

#108
20160248245
2016-08-25

Method for controlling trip event of inverter

#109
20160241153
2016-08-18

Converters for wind turbine generators

#110
20160226431
2016-08-04

Protective device for vehicle inverter

#111
20160190915
2016-06-30

Semiconductor power module and power conversion apparatus using the same

#112
20160190798
2016-06-30

Rapid shutdown solid state circuit for photovoltaic energy generation systems

#113
20160087425
2016-03-24

Mitigation of arc flash hazard in photovoltaic power plants

#114
20160087422
2016-03-24

Fault and short-circuit protected output driver

#115
20150372471
2015-12-24

Semiconductor module

#116
20150331032
2015-11-19

Method for monitoring a half bridge branch in a half bridge

#117
20150316621
2015-11-05

Circuit fault detection device

#118
20150291088
2015-10-15

Power supply device and illumination device for vehicle using same

#119
20150188308
2015-07-02

INVERTER APPARATUS

#120
20150171625
2015-06-18

Integrated soft start and safety shutdown

#121
20150155704
2015-06-04

Switching converter, control circuit thereof, AC/DC converter, power adapter and electronic device

#122
20150146327
2015-05-28

Adaptive fault clearing based on power transistor temperature

#123
20150137850
2015-05-21

Distributed detection of leakage current and fault current, and detection of string faults

#124
20150085540
2015-03-26

Systems and methods for over-temperature protection and over-voltage protection for power conversion systems

#125
20150085539
2015-03-26

Electric power converter to reduce or eliminate erroneous power module abnormality indication

#126
20150035464
2015-02-05

Inverter device and power steering device

#127
20150023075
2015-01-22

Inverter control apparatus and control method thereof

#128
20150016003
2015-01-15

Methods and apparatus to clamp overvoltages for alternating current systems

#129
20140340097
2014-11-20

Method of detecting state of power cable in inverter system

#130
20140321019
2014-10-30

Method and apparatus for protecting an intermediate circuit capacitor in a power converter

#131
20140265595
2014-09-18

Smart and scalable lunar power inverters

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20140218826
2014-08-07

Method and apparatus for detecting a desaturation fault in an inverter module

#133
20140217792
2014-08-07

Vehicle seating system and method for reducing fatigue with dynamic actuator movement

#134
20140204636
2014-07-24

Current limiting control method for diode neutral-point-clamped three-level inverter and related circuit

#135
20140161152
2014-06-12

Thermal monitoring of a converter

#136
20140156130
2014-06-05

Control apparatus of electrically-driven vehicle

#137
20140126256
2014-05-08

Semiconductor package having an over-temperature protection circuit utilizing multiple temperature threshold values

#138
20140126255
2014-05-08

System and method of over-voltage protection

#139
20140126087
2014-05-08

ELECTRIC POWER CONVERSION APPARATUS, CURRENT-CARRYING DEVICE THAT CARRIES AC POWER, AND METHOD OF MANUFACTURING CURRENT-CARRYING DEVICE THAT CARRIES AC POWER

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20140092655
2014-04-03

Power converter

#141
20140092654
2014-04-03

Method for the operation of an inverter, and inverter

#142
20140078793
2014-03-20

Mitigation of arc flash hazard in photovoltaic power plants

#143
20140016378
2014-01-16

Flyback-based power conversion apparatus and power conversion method thereof

#144
20140015462
2014-01-16

Method of detecting disconnection state of power cable in inverter system

#145
20130320905
2013-12-05

Electric motor drive apparatus and electric power steering apparatus having the same

#146
20130286696
2013-10-31

Methods, systems, and software for controlling a power converter during low (zero)-voltage ride-through conditions

#147
20130278191
2013-10-24

Motor drive control device

#148
20130222951
2013-08-29

FAULT PROTECTION CIRCUIT FOR PHOTOVOLTAIC POWER SYSTEM

#149
20130182470
2013-07-18

Power module package having a multi-phase inverter and power factor correction

#150
20130155734
2013-06-20

Method and system for islanding detection and protection

#151
20130135908
2013-05-30

Converter system and method for the operation of such a converter

#152
20130088803
2013-04-11

POWER SUPPLY APPARATUS

#153
20130058139
2013-03-07

Energy generation system and anti islanding protecting method thereof

#154
20120294428
2012-11-22

Power converter, X-ray CT apparatus, and X-ray imaging apparatus

#155
20120248864
2012-10-04

System and Method for Operating Inverters

#156
20120218791
2012-08-30

Methods, systems, and software for controlling a power converter during low (zero)-voltage ride-through conditions

#157
20120217918
2012-08-30

INVERTER

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20120181961
2012-07-19

Power converting apparatus for electric vehicle

#159
20120163048
2012-06-28

Inverter, power generation system and method of operating a power generation system

#160
20120147637
2012-06-14

Methods, Systems, and Software for Controlling a Power Converter During Low (Zero)-Voltage Ride-Through Conditions

#161
20120050931
2012-03-01

Methods and apparatus to clamp overvoltages for alternating current systems

#162
20120038391
2012-02-16

Transistor module and transistor driving module

#163
20110317315
2011-12-29

Driving device for semiconductor element

#164
20110316466
2011-12-29

Motor drive apparatus and method, and electric power steering system using the same

#165
20110249475
2011-10-13

Grid-connected inverter

#166
20110211290
2011-09-01

Solar power inverters, including solar power inverters having surge protective devices, and associated methods

#167
20110157752
2011-06-30

OVERCURRENT DETECTION CIRCUIT, INVERTER, COMPRESSOR, AND AIR-CONDITIONING MACHINE, AND ADJUSTING METHOD FOR ADJUSTING OVERCURRENT DETECTION CIRCUIT

#168
20090262477
2009-10-22

Short-circuit current limiter

#169
20090168470
2009-07-02

Fault-sensing and protecting apparatus for soft start circuit of inverter and method for the same

#170
20090103336
2009-04-23

Control apparatus

#171
20080304298
2008-12-11

System interconnection inverter including overvoltage and negative voltage protection

#172
20070206395
2007-09-06

Class E amplifier with inductive clamp

#173
20070201172
2007-08-30

Inverter with time counting function

#174
20070179719
2007-08-02

Circuit arrangement for the overload protection of a controllable switching event

#175
20070103163
2007-05-10

Inverter system

#176
20070103094
2007-05-10

Anomaly detection in inverter system

#177
20060261830
2006-11-23

Inverter thermal protection

#178
20060256590
2006-11-16

Over-voltage protection circuit for power converter

#179
20060158911
2006-07-20

Class E amplifier with inductive clamp

#180
20060087790
2006-04-27

Protective device for vehicle electronic apparatus

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17313510
2021-10-26

Apparatus and method for producing negative sequence current

#182
16219915
2019-08-13

Power conditioner and power system

#183
15608500
2018-03-06

Method and device for supressing common-mode voltage of inverter alternating current cable relative to ground

#184
14491046
2018-10-16

Surge protection circuit for a half-bridge power converter

#185
14490946
2016-12-13

Gate drive integrated circuit with input line overvoltage protection for a half-bridge power converter

#186
14183403
2015-09-01

Islanding detection in power converters