ClassID:

216923

H02J3/1842 - CPC Classification

Classification description:

Circuit arrangements for ac mains or ac distribution networks; Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters

Sub-classes:
Recent Application in this class:
#1
20260121414
2026-04-30

POWER CONTROL SYSTEM FOR POWER NETWORK

#2
20260100588
2026-04-09

Grid-Forming Microinverter and Method Based on Bidirectional Flyback Converters

#3
20260031623
2026-01-29

UTILIZATION OF DISTRIBUTED GENERATOR INVERTERS AS STATCOM

#4
20250347587
2025-11-13

USER-INSTALLABLE PART INSTALLATION DETECTION TECHNIQUES

#5
20250210991
2025-06-26

CONTROL METHOD, INVERTER, AND PHOTOVOLTAIC SYSTEM

#6
20250070685
2025-02-27

SYSTEM AND METHOD FOR UNBALANCED CURRENT ADJUSTMENT FROM CAPACITY ENHANCEMENT AND SPLIT-PHASE OUTPUT OF DISTRIBUTION TRANSFORMER

#7
20240388091
2024-11-21

System and method for controlling an active harmonic filter in an inverter-based resource

#8
20240380208
2024-11-14

Power compensation control method and apparatus for high-power multi-functional efficient charging system

#9
20240305102
2024-09-12

Control Method for a Grid Following Voltage Source Converter without Phase Locked Loop

#10
20240264621
2024-08-08

USE OF DISTRIBUTED GENERATOR (DG) INVERTERS AS STATCOMS FOR DECREASING LINE LOSSES

#11
20240255377
2024-08-01

USER-INSTALLABLE PART INSTALLATION DETECTION TECHNIQUES

#12
20240106235
2024-03-28

HIGH ANTI-INTERFERENCE MICROSYSTEM BASED ON SYSTEM IN PACKAGE (SIP) FOR POWER GRID

#13
20230358455
2023-11-09

POWER CONTROL SYSTEM AND HEAT PUMP SYSTEM

#14
20230251163
2023-08-10

User-installable part installation detection techniques

#15
20230216301
2023-07-06

Power flow control system for a distribution grid having a grid forming capability

#16
20230147308
2023-05-11

POWER QUALITY COMPENSATION SYSTEM, A POWER ELECTRONIC CONTROLLER AND CONTROL METHOD OF THE SAME

#17
20230109775
2023-04-13

Grid Forming Over Distribution Grid with Renewable Sources and Loads

#18
20220360077
2022-11-10

Systems and methods for paralleling 3-wire and 4-wire 3-phase active harmonic filters

#19
20220294223
2022-09-15

Power quality compensation system and control method with bus voltage and current peak control

#20
20220200282
2022-06-23

Device for active electrical compensation

#21
20220190600
2022-06-16

Method and system for locally controlling power delivery along a distribution feeder of an electricity grid

#22
20220166222
2022-05-26

Utilization of distributed generator inverters as STATCOM

#23
20210408792
2021-12-30

Magnetically controllable inductor in a series circuit

#24
20210407731
2021-12-30

Magnetically controllable choke coil having central connection

#25
20210344275
2021-11-04

Transformer converter with center tap inductance

#26
20210273452
2021-09-02

Damping oscillations using active filters

#27
20210265931
2021-08-26

Wind turbine assembly

#28
20210159703
2021-05-27

Flexible reactive power compensation

#29
20210159697
2021-05-27

Active filter for resonance reduction

#30
20210098989
2021-04-01

System and method for stabilizing an alternating voltage grid

#31
20210083480
2021-03-18

Reactive power control method, device and system

#32
20210083477
2021-03-18

Method and system for locally controlling power delivery along a distribution feeder of an electricity grid

#33
20200313540
2020-10-01

Active power filter-based modular multilevel converter

#34
20200259331
2020-08-13

Power electronics conditioning system with half-winding generator setup

#35
20200244070
2020-07-30

Method for black-starting an electrical grid

#36
20200203953
2020-06-25

Hybrid control device for static synchronous compensator (STATCOM)

#37
20200150707
2020-05-14

Use of distributed generator (DG) inverters as STATCOMs for decreasing line losses

#38
20200142437
2020-05-07

Power-source power factor control system, phase modifying apparatus, and active filter apparatus

#39
20200076193
2020-03-05

Relating to reactive power support in wind power plants

#40
20200007024
2020-01-02

Active power filter with adjustable neutral current limit

#41
20190393701
2019-12-26

Frequency converter and method in connection with a frequency converter

#42
20190363538
2019-11-28

Arrangement for reactive power compensation

#43
20190296551
2019-09-26

Reactive power control device and reactive power control method

#44
20190280482
2019-09-12

UTILITY INTERACTIVE INVERTER WITH VAR DISPATCH CAPABILITIES

#45
20190245353
2019-08-08

Utilization of distributed generator inverters as STATCOM

#46
20190219029
2019-07-18

Controlling a wind turbine during over-voltage ride through

#47
20190214821
2019-07-11

System and method for optimizing reactive power generation of a wind farm

#48
20190131790
2019-05-02

Active filter for resonance reduction

#49
20190103747
2019-04-04

System and method for controlling cluster-based wind farms

#50
20190081477
2019-03-14

ACTIVE FILTER, CONTROL METHOD THEREOF, AND POWER MANAGEMENT SYSTEM COMPRISING ACTIVE FILTER

#51
20190052084
2019-02-14

Gas turbine electrical power system and control strategy for limiting reverse power shutdown

#52
20180375326
2018-12-27

Power electronic voltage tranforming apparatus with single-phase power electronic transformers

#53
20180323618
2018-11-08

Electrical power systems having reactive power and harmonic support components

#54
20180309293
2018-10-25

Power factor correction device and method for operating a power factor correction device

#55
20180212533
2018-07-26

Multilevel converter with reduced AC fault handling rating

#56
20180205228
2018-07-19

Reactive power compensator and method of controlling the same

#57
20180159328
2018-06-07

Reactive power compensation apparatus and control method thereof

#58
20180152118
2018-05-31

Unfolding bridge, inverter having reactive-power capability, and polarity reversing method

#59
20180145510
2018-05-24

Electrical arrangement comprising sub-modules

#60
20180115160
2018-04-26

Peer-to-peer: AC power grid compensation architecture

#61
20180083447
2018-03-22

Power compensation apparatus and method of controlling the same

#62
20180054065
2018-02-22

Cascaded photovoltaic grid-connected inverter, control method and control device for the same

#63
20180006461
2018-01-04

Gas tube-switched flexible alternating current transmission system

#64
20170256944
2017-09-07

Power control circuit and method for stabilizing a power supply

#65
20170255217
2017-09-07

Fuel cell power plant with real and reactive power modes

#66
20170108888
2017-04-20

Converter for symmetrical reactive power compensation, and a method for controlling same

#67
20170040887
2017-02-09

DC/AC converter apparatus comprising means for controlling the reactive power and power conversion and generation system comprising such DC/AC converter apparatus

#68
20170025859
2017-01-26

Control of reactive power in a wind power plant

#69
20170025858
2017-01-26

Reconfiguration of the reactive power loop of a wind power plant

#70
20170012427
2017-01-12

Hybrid winch with controlled release and torque impulse generation control for anchor handling offshore

#71
20160285273
2016-09-29

Method and apparatus for compensating non-active currents in electrical power networks

#72
20160268940
2016-09-15

System and method for improved reactive power speed-of-response for a wind farm

#73
20160233787
2016-08-11

Power conversion device and method of controlling the same

#74
20160197482
2016-07-07

Utilization of distributed generator inverters as STATCOM

#75
20160164294
2016-06-09

Systems and methods for reactive power compensation

#76
20160149413
2016-05-26

Distributed power source system with storage battery

#77
20160141978
2016-05-19

Control apparatus for photovoltaic inverter

#78
20160134114
2016-05-12

Compensating electrical harmonics on the electrical grid

#79
20160006356
2016-01-07

Wireless power transfer systems using load feedback

#80
20150316906
2015-11-05

Active front-end rectifier filter delay compensation method based on model predictive control

#81
20150236510
2015-08-20

Meter/voltage regulator with volt-ampere reactive control positioned at customer site

#82
20150162847
2015-06-11

Static synchronous compensator and voltage control method

#83
20150112496
2015-04-23

Methods and systems for integrated Volt/VAr control in electric network

#84
20150102689
2015-04-16

Active filter for resonance reduction

#85
20150102674
2015-04-16

Renewable energy site reactive power control

#86
20150015216
2015-01-15

Three-phase power conversion with power factor correction operational day and night

#87
20140368043
2014-12-18

Systems and methods for grid interactive UPS

#88
20140368042
2014-12-18

Systems and methods for multi-use multi-mode ups

#89
20140268957
2014-09-18

Single phase power system controller and method therefor

#90
20140185338
2014-07-03

Balancing power grid parameters using distributed energy control

#91
20140152012
2014-06-05

Systems and methods for utilizing an active compensator to augment a diode rectifier

#92
20140132229
2014-05-15

Static synchronous compensator systems and related methods

#93
20140062086
2014-03-06

Reactive power regulation

#94
20130229837
2013-09-05

Inverter and active power filter system utlizing an auxiliary capacitor module

#95
20130207620
2013-08-15

Adaptive controller for STATCOM to enhance voltage stability

#96
20130207393
2013-08-15

Wind farm harmonic predictor and method for predicting harmonics

#97
20130188406
2013-07-25

Reactive energy compensator comprising N parallel inverters, N capacitor banks, and means for connecting the banks through passive electrical components

#98
20130176757
2013-07-11

Reactive energy compensator and associated method for balancing half-bus voltages

#99
20130176751
2013-07-11

Method and apparatus for controlling a frequency converter

#100
20130175878
2013-07-11

System and method for reducing harmonic distortion

#101
20130148393
2013-06-13

Methods and systems for controlling a power converter

#102
20130138260
2013-05-30

Systems and methods for switch-controlled VAR sources coupled to a power grid

#103
20130107598
2013-05-02

System and method for Var injection at a distributed power generation source

#104
20130106196
2013-05-02

Master-slave architecture for controlling operation of photovoltaic power plants

#105
20130026841
2013-01-31

Voltage source converter and a method for fault handling thereof

#106
20120236616
2012-09-20

Inverter capable of providing reactive power

#107
20120229086
2012-09-13

CHARGING APPARATUS OF MOBILE VEHICLE

#108
20120205981
2012-08-16

Utilization of distributed generator inverters as STATCOM

#109
20120187924
2012-07-26

Method for regulation of power converters and arrangement for carrying out the method

#110
20120139488
2012-06-07

System and method for providing reactive power using electric car battery

#111
20120112825
2012-05-10

MODULES FOR AN ACTIVE MAINS FILTER AND ACTIVE MAINS FILTER

#112
20120112714
2012-05-10

Reactive power compensation in electrical power system

#113
20120086412
2012-04-12

Arrangement For Exchanging Power

#114
20120080420
2012-04-05

Power control circuit and method for stabilizing a power supply

#115
20120069612
2012-03-22

Arrangement for exchanging power

#116
20120049807
2012-03-01

Method of load leveling in an energy-generating installation

#117
20120049636
2012-03-01

System and method for distribution of inverter VAR support

#118
20120038156
2012-02-16

ELECTRICAL ENERGY GENERATING INSTALLATION DRIVEN AT VARIABLE ROTATIONAL SPEEDS, WITH A CONSTANT OUTPUT FREQUENCY, ESPECIALLY A WIND POWER INSTALLATION

#119
20120016530
2012-01-19

METHOD AND SYSTEM FOR MANAGING POWER QUALITY AND EFFICIENCY

#120
20110316492
2011-12-29

Control device reactive power compensator and method

#121
20110305050
2011-12-15

Methods for minimizing double-frequency ripple power in single-phase power conditioners

#122
20110264299
2011-10-27

METHOD AND SYSTEM FOR MANAGING POWER QUALITY AND EFFICIENCY

#123
20110255307
2011-10-20

Apparatus and method for controling power quality of power generation system

#124
20110227422
2011-09-22

DC capacitor balancing

#125
20110118887
2011-05-19

System stabilizing device

#126
20110109280
2011-05-12

Automatic self-adjusting voltage controller

#127
20110088748
2011-04-21

Grid-interactive photovoltaic generation system with power quality control and energy saving

#128
20110074367
2011-03-31

Static compensator and method for controlling thereof

#129
20110032735
2011-02-10

Universal three phase controllers for power converters

#130
20100292852
2010-11-18

Wind mill power flow control with dump load and power converter

#131
20100238690
2010-09-23

Methods for minimizing double-frequency ripple power in single-phase power conditioners

#132
20100225287
2010-09-09

Voltage regulator with inductor banks

#133
20100171472
2010-07-08

STATCOM system for providing reactive and/or active power to a power network

#134
20100067271
2010-03-18

Reactive power compensation in solar power system

#135
20100001588
2010-01-07

Multi-function three-phase active power filter

#136
20090309421
2009-12-17

Power compensator and method for providing a black start with that compensator

#137
20090303764
2009-12-10

Universal three phase controllers for power converters

#138
20090243398
2009-10-01

Systems and methods for reducing distortion in a power source using an active harmonics filter

#139
20090115254
2009-05-07

Systems and methods for voltage SAG compensation

#140
20090097283
2009-04-16

Methods for minimizing double-frequency ripple power in single-phase power conditioners

#141
20090024255
2009-01-22

Utility interactive inverter with VAR dispatch capabilities

#142
20090021964
2009-01-22

Modularized active power filter

#143
20080315685
2008-12-25

Energy converter system with reactive-power-management

#144
20080252143
2008-10-16

Method and device for injecting reactive current during a mains supply voltage dip

#145
20080232143
2008-09-25

Method of designing a static synchronous compensator based on passivity-based control

#146
20080219035
2008-09-11

Active power filter

#147
20080174183
2008-07-24

Active filter

#148
20080088183
2008-04-17

Integrated closed loop control method and apparatus for combined uninterruptible power supply and generator system

#149
20070296381
2007-12-27

Method of operating a converter circuit

#150
20070216373
2007-09-20

Universal three phase controllers for power converters

#151
20070076452
2007-04-05

Voltage regulator with inductor banks

#152
20070076451
2007-04-05

Active power conditioner for AC load characteristics

#153
20060202636
2006-09-14

Power conversion and voltage sag correction with regenerative loads

#154
20060044850
2006-03-02

Active type harmonic suppression apparatus

#155
20060043941
2006-03-02

Reactive power compensator

#156
20050253564
2005-11-17

Active power filter apparatus with reduced va rating for neutral current suppression

#157
20050212494
2005-09-29

Reactive power compensator device

#158
20050200337
2005-09-15

Power converter circuit and associated triggering method for generators with dynamically variable power output

#159
20050117374
2005-06-02

Wide bandwidth AC-DC power converter

#160
20050116691
2005-06-02

Equipment and method for exchanging power, in shunt connection, with an electric power network, and use of such equipment

#161
20050083627
2005-04-21

Hybrid parallel active power filter for electrified railway system

#162
20050040655
2005-02-24

Continuous reactive power support for wind turbine generators

#163
20050015182
2005-01-20

Hybrid power flow controller and method

#164
20050012395
2005-01-20

Integrated closed loop control method and apparatus for combined uninterruptible power supply and generator system

#165
18666783
2024-12-03

Inverter system with reactive power support and control method thereof

#166
18631881
2025-10-14

System and method for creation and operation of a microgrid from a preexisting electric grid

#167
16403870
2020-09-29

Method for reactive power oscillation damping for a wind turbine system with integrated reactive power compensation device

#168
16403751
2020-03-03

System and method for reactive power control of wind turbines in a wind farm supported with auxiliary reactive power compensation

#169
16390547
2020-08-11

System and method for reactive power control of a wind turbine by varying switching frequency of rotor side converter

#170
15425270
2018-06-19

Hybrid STATCOM with wide compensation range and low DC-link voltage