ClassID:

218422

H02P25/026 - CPC Classification

Classification description:

Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor; Synchronous motors controlled by supply frequency thereby detecting the rotor position

Recent Application in this class:
#1
20260058586
2026-02-26

ROTOR POSITION ESTIMATION USING VARIABLE HIGH-FREQUENCY VOLTAGE INJECTION

#2
20250226783
2025-07-10

MOTOR CONTROL DEVICE, MOTOR CONTROL METHOD, HYBRID SYSTEM, BOOST CONVERTER SYSTEM, AND ELECTRIC POWER STEERING SYSTEM

#3
20250219519
2025-07-03

ROTATION ANGLE CALCULATION SYSTEM, ROTATION ANGLE CALCULATION METHOD, AND STORAGE MEDIUM

#4
20250158549
2025-05-15

Motor drive system and corresponding method

#5
20250141378
2025-05-01

Determining an Initial Angular Position of a Rotor of a Salient-Pole Permanent Magnet Electrical Machine

#6
20240413773
2024-12-12

CONTROL OF A ROTATING ELECTRIC MACHINE

#7
20240322721
2024-09-26

METHOD FOR DETERMINING AN INITIAL POSITION OF A ROTOR OF A BRUSHLESS MOTOR AND BRUSHLESS MOTOR

#8
20240291417
2024-08-29

INVERTER CONTROL DEVICE AND INVERTER CONTROL METHOD

#9
20240243687
2024-07-18

DRIVE APPARATUS

#10
20230327587
2023-10-12

Method of determining a position of a rotor of a brushless permanent magnet motor

#11
20230109908
2023-04-13

Magnetic pole position detection device

#12
20230065597
2023-03-02

Resynchronization of brushless DC motors

#13
20220413051
2022-12-29

System and method for computing direct quadrature zero resultant drive vector using rotor position

#14
20220311363
2022-09-29

Motor controller, motor control method and computer program product for vehicle assist control

#15
20220200493
2022-06-23

Sensorless control of a motor by variable frequency signal injection

#16
20220158580
2022-05-19

Apparatus and method for inverter control

#17
20210408948
2021-12-30

Method for determining phase currents of a rotating multiphase electrical machine fed by means of a PWM-controlled inverter

#18
20210367546
2021-11-25

POLARITY DETECTION FOR POWER CONVERSION

#19
20210091693
2021-03-25

Thyristor starter

#20
20200400232
2020-12-24

Shift range control apparatus

#21
20200373863
2020-11-26

SLOTLESS SYNCHRONOUS PERMANENT MAGNET MOTOR

#22
20200076255
2020-03-05

Self-commissioning of a bearingless-motor drive

#23
20190207545
2019-07-04

Method for controlling a synchronous machine and control device for a synchronous machine

#24
20190115859
2019-04-18

Motor control device and motor system

#25
20190068094
2019-02-28

Motor driving circuit, motor driving method, and motor utilizing the same

#26
20190052214
2019-02-14

Motor control system

#27
20190052198
2019-02-14

Control device and method for brushless motor

#28
20190028045
2019-01-24

MOTOR DRIVE CONTROL DEVICE AND MOTOR DRIVE CONTROL METHOD

#29
20180316297
2018-11-01

Motor driving apparatus, vacuum cleaner, and hand dryer

#30
20180257511
2018-09-13

Method and apparatus to dissipate recovered energy from a mechanical load within a connected motor during braking

#31
20180091080
2018-03-29

Motor control device

#32
20170346429
2017-11-30

CONTROLLER-INTEGRATED ROTATING ELECTRICAL MACHINE

#33
20170310266
2017-10-26

Method and device for controlling polyphase synchronous rotary electrical machine, and corresponding reversible electrical machine for motor vehicle

#34
20170149367
2017-05-25

Electromagnetic machine system having current injection for inductive excitation of windings

#35
20160118919
2016-04-28

System and method for asynchronous permanent magnet motor operation

#36
20150333679
2015-11-19

Wound field synchronous machine with resonant field exciter

#37
20150229248
2015-08-13

Electrical controller for machines

#38
20150188470
2015-07-02

System and method for monitoring a rapid de-excitation system for synchronous machines

#39
20150097372
2015-04-09

Three phase flux switching generator in a three stage wound field synchronous machine

#40
20140340015
2014-11-20

Brushless motor, external AC voltage source, and electric power steering device

#41
20140232317
2014-08-21

System and method for controlling a synchronous motor

#42
20140197767
2014-07-17

Surface motor direct-drive sucker-rod screw pump device

#43
20140062375
2014-03-06

Control apparatus for three-phase rotary machine

#44
20140042953
2014-02-13

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

#45
20130314021
2013-11-28

Rotary electric machine driving system

#46
20130293171
2013-11-07

Measurement circuit

#47
20130193903
2013-08-01

Synchronous machine with switching element in the excitation circuit

#48
20130169196
2013-07-04

Brushless motor speed control system

#49
20130134918
2013-05-30

Controller for improving control and operation of AC motors

#50
20120313462
2012-12-13

Stator for an EC-motor and EC-motor with such a stator

#51
20100098563
2010-04-22

Surface motor direct-drive sucker-rod screw pump device