ClassID:

218470

H02P27/14 - CPC Classification

Classification description:

Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation with three or more levels of voltage

Recent Application in this class:
#1
20260149385
2026-05-28

MULTIPHASE CONVERTER

#2
20260128694
2026-05-07

SAFE START OF AN AC MOTOR

#3
20260100664
2026-04-09

6-STEP/LINEAR MODULATION HYBRID CONTROL METHOD

#4
20260088743
2026-03-26

POWER CONVERTING APPARATUS, MOTOR DRIVE DEVICE, AND REFRIGERATION CYCLE-INCORPORATING DEVICE

#5
20260074642
2026-03-12

MOTOR SYSTEM CONTROL DEVICE AND STORAGE MEDIUM

#6
20250364938
2025-11-27

APPARATUS AND METHOD FOR SYNCHRONOUSLY CONTROLLING 6-PHASE MOTOR BY USING DUAL CONTROLLER

#7
20250330108
2025-10-23

MOTOR DRIVER FOR STARTING UP MOTOR HAVING ANY RESISTANCE

#8
20250286489
2025-09-11

OPEN-WINDING MOTOR DRIVE DEVICE

#9
20250260305
2025-08-14

MOTOR DRIVING APPARATUS AND AIR CONDITIONER INCLUDING THE SAME

#10
20250253795
2025-08-07

METHOD AND SYSTEM FOR FIELD CONTROL OF EXTERNALLY EXCITED SYNCHRONOUS MOTOR

#11
20250226781
2025-07-10

MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD

#12
20250192697
2025-06-12

MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD

#13
20250183763
2025-06-05

ELECTRIC MOTORS

#14
20250105768
2025-03-27

MOTOR CONTROL DEVICE AND METHOD FOR ESTIMATING POSITION OF ROTOR THEREOF

#15
20250007441
2025-01-02

REDUCTION OF ELECTROMAGNETIC INTERFERENCE USING RANDOM FINITE FREQUENCY SET PULSE-WIDTH MODULATION

#16
20240388235
2024-11-21

MOTOR CONTROL DEVICE

#17
20240322726
2024-09-26

ELECTRICAL DRIVE SYSTEM AND METHOD

#18
20240204710
2024-06-20

POWER CONVERSION DEVICE AND DRIVE DEVICE

#19
20240195321
2024-06-13

Drive system and control device for drive system

#20
20240171046
2024-05-23

Electric motors

#21
20240128916
2024-04-18

INVERTER CIRCUIT AND MOTOR MODULE

#22
20240063747
2024-02-22

MOTOR DRIVING APPARATUS, MOTOR SYSTEM, AND ELECTRIC VEHICLE

#23
20230421088
2023-12-28

DOUBLE-REFERENCE PULSE-WIDTH MODULATION FOR TORQUE MINIMIZATION OF AC MACHINES

#24
20230412087
2023-12-21

Systems and Methods for Stacked Multi-Level Power Converter Implementations with Linear Scaling

#25
20230223886
2023-07-13

Single carrier pulse width modulator for 5-level converter with capacitor voltage self-balancing, equal loss distribution, and improved output voltage spectrum

#26
20230208340
2023-06-29

METHOD FOR OPERATING AN INVERTER CONNECTED TO AN ELECTRIC MACHINE USING A CONTROL DEVICE AND ELECTRICAL CIRCUIT ASSEMBLY

#27
20230198341
2023-06-22

Electric motors having flux shields for motor poles

#28
20230075792
2023-03-09

Multi-level inverter

#29
20230038268
2023-02-09

Multi-inverter system for electric machine

#30
20220416713
2022-12-29

Motor controller including resonant controllers

#31
20220368247
2022-11-17

Model predictive pulse pattern control based on small-signal pulse pattern optimization

#32
20220271697
2022-08-25

Electric drive assembly with dynamic control of pulse width modulation switching

#33
20220231615
2022-07-21

Secondary magnetic excitation generator-motor device

#34
20220094278
2022-03-24

Operation of switching elements of a multilevel energy converter

#35
20210316624
2021-10-14

CHARGING DEVICE HAVING CONTROLLABLE DC LINK CENTER POINT VOLTAGE, AND DRIVE SYSTEM HAVING SUCH A CHARGING DEVICE

#36
20210297009
2021-09-23

Power conversion systems and methods

#37
20210288605
2021-09-16

Speed based gain correction for three level inverter midpoint control

#38
20210249966
2021-08-12

Power conversion apparatus that drives a motor by receiving a three-phase AC voltage from an AC power system

#39
20210249937
2021-08-12

Electric motors having flux barriers

#40
20210083597
2021-03-18

Three-level power conversion device, three-level power conversion device control method, and storage medium

#41
20210013821
2021-01-14

Control system and method for permanent magnet synchronous traction and transmission system

#42
20200244184
2020-07-30

CONTROL OF DELTA-CONNECTED CONVERTER

#43
20200052557
2020-02-13

Electric motor with flux barriers

#44
20200047900
2020-02-13

Motor control method, apparatus, and system

#45
20200036318
2020-01-30

Drive control device for electric motor and drive control method for same

#46
20200021229
2020-01-16

Multi-inverter system for electric machine

#47
20190372503
2019-12-05

Motor control apparatus, control method thereof, and program

#48
20190372498
2019-12-05

Motor control apparatus, control method thereof, and program

#49
20190356262
2019-11-21

Motor driving circuit and control method thereof

#50
20190348924
2019-11-14

Motor drive architecture for variable frequency alternating current loads

#51
20190334470
2019-10-31

Power supply system, transportation device, and power transmission method

#52
20190288617
2019-09-19

Configuration of a battery of a vehicle having a plurality of drive units

#53
20190288535
2019-09-19

Modulation index improvement by intelligent battery

#54
20190288526
2019-09-19

Vehicle having an energy storage element

#55
20190152514
2019-05-23

Steering control unit

#56
20190123651
2019-04-25

Power supply device

#57
20190115849
2019-04-18

Converter, electrical polyphase system and method for efficient power exchange

#58
20190009919
2019-01-10

Motor control method, apparatus, and system

#59
20180287437
2018-10-04

High frequency electric motor, control system, and method of manufacture

#60
20180269696
2018-09-20

Power system

#61
20180241326
2018-08-23

Drive system

#62
20180219493
2018-08-02

Method for operating a frequency converter and frequency converter

#63
20180183365
2018-06-28

Motor driving device and motor system

#64
20180056793
2018-03-01

Power generating systems having synchronous generator multiplex windings and multilevel inverters

#65
20180054150
2018-02-22

Three level inverter midpoint control gain correction

#66
20180048255
2018-02-15

Half-bridge switching circuit system

#67
20180034402
2018-02-01

Control device for power conversion device, compressor drive system, flywheel power generating system, and control method of power conversion device

#68
20180026569
2018-01-25

Control device for power conversion device, power conversion device, electric motor drive system using said devices, compressor drive system, and gas turbine power generation system

#69
20170369276
2017-12-28

Conveyance system having paralleled drives

#70
20170331409
2017-11-16

Mechatronic assembly controlled by a torque and direction signal separate from the power signal

#71
20170317607
2017-11-02

THREE-LEVEL T-TYPE NPC POWER CONVERTER

#72
20170302206
2017-10-19

Three-phase neutral-point-clamped power conversion device

#73
20170274926
2017-09-28

Power conversion device, control method for same, and electric power steering control device

#74
20170264226
2017-09-14

Multi-level high-speed adjustable speed drive

#75
20170170770
2017-06-15

Power conversion apparatus and air-conditioning apparatus including the power conversion apparatus

#76
20170163115
2017-06-08

Converter, electrical polyphase system and method

#77
20170155351
2017-06-01

Power supply system, transportation device, and power transmission method

#78
20160268951
2016-09-15

Motor driving apparatus

#79
20160268950
2016-09-15

Motor driving apparatus

#80
20160141977
2016-05-19

Seven-level inverter apparatus

#81
20160072424
2016-03-10

Control device of alternating-current electric motor

#82
20150333658
2015-11-19

Multi-level power converter

#83
20150263645
2015-09-17

Pulse width modulation control for a multilevel converter

#84
20150229233
2015-08-13

Model predictive control with reference tracking

#85
20150194885
2015-07-09

Method for producing an output voltage and assembly for performing the method

#86
20150124506
2015-05-07

Modular converter with multilevel submodules

#87
20150108925
2015-04-23

Modular stacked dc architecture traction system and method of making same

#88
20150091488
2015-04-02

Method and system for driving electric machines

#89
20150042253
2015-02-12

Method for determining phase angle in phase shift transformer for medium voltage inverter

#90
20150035499
2015-02-05

Method for using an electric unit

#91
20150035285
2015-02-05

Electric unit for a pumped-storage power plant having components within and outside of an underground cavern

#92
20150002066
2015-01-01

Three-level power conversion apparatus

#93
20140292246
2014-10-02

Medium voltage inverter system

#94
20140218986
2014-08-07

Multilevel converter and a method for controlling multilevel converter including balancing cell voltages

#95
20140161646
2014-06-12

Electric drivetrain of a device, and gas compression equipment including such a drivetrain

#96
20140111123
2014-04-24

Drive unit for an electric motor

#97
20140042953
2014-02-13

Winding synchronous machine having a moving object including an inverter circuit, and method for controlling same

#98
20130293165
2013-11-07

System for coupling at least one DC source to a controllable energy store and associated operating method

#99
20130270905
2013-10-17

System for charging an energy store, and method for operating the charging system

#100
20130249287
2013-09-26

System for charging an energy store, and method for operating the charging system

#101
20130234647
2013-09-12

Method for transferring energy between at least two energy storage cells in a controllable energy store

#102
20130134911
2013-05-30

Modular stacked DC architecture traction system and method of making same

#103
20130063070
2013-03-14

Medium voltage variable frequency driving system

#104
20120163044
2012-06-28

MULTILEVEL POWER CONVERTER OR INVERTER ARRANGEMENT USING H BRIDGES

#105
20110199032
2011-08-18

Control apparatus for matrix converter

#106
20110181225
2011-07-28

Controller for a rotating electrical machine

#107
20100328848
2010-12-30

Providing modular power conversion

#108
20100253255
2010-10-07

WOUND FIELD SYNCHRONOUS MOTOR DRIVE

#109
20100253254
2010-10-07

Wound field synchronous motor drive

#110
20100188038
2010-07-29

Electric compressor control device

#111
20090196764
2009-08-06

HIGH FREQUENCY ELECTRIC-DRIVE WITH MULTI-POLE MOTOR FOR GAS PIPELINE AND STORAGE COMPRESSION APPLICATIONS

#112
20090066276
2009-03-12

Method for operating a rotating electrical machine

#113
20080272718
2008-11-06

Power electronic circuit arrangement for a rotating field machine

#114
20080218320
2008-09-11

Multilevel inverter using cascade configuration and control method thereof

#115
20060197491
2006-09-07

Low voltage, two-level, six-pulse induction motor controller driving a medium-to-high voltage, three-or-more-level AC drive inverter bridge

#116
20060091833
2006-05-04

Motor drive system and process

#117
17405311
2023-01-10

System and method for operating multi-level power converter using multiple deadtimes

#118
17389867
2022-10-25

Pulse-width modulation scheme for managing thermal loading of an inverter during stall

#119
17121768
2022-05-17

Motor controller

#120
16741387
2021-12-21

Hybrid electric variable speed drive

#121
16386037
2020-03-10

Dynamic carrier waveform modification to avoid concurrent turn-on/turn-off switching