ClassID:

218448

H02P25/20 - 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 circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays for pole-changing

Recent Application in this class:
#1
20250364935
2025-11-27

VARIABLE POLE SYSTEM FOR ELECTRIC MOTORS

#2
20240405709
2024-12-05

DYNAMICALLY CONFIGURABLE HARDWARE SYSTEM FOR MOTOR SYSTEM AND METHOD FOR OPERATING SAME

#3
20240258944
2024-08-01

Dynamically configurable hardware system for motor system and method for operating same

#4
20230402950
2023-12-14

METHOD FOR ADJUSTING AN OPERATIONAL PERFORMANCE OF AN ELECTRIC MACHINE, DATA PROCESSING DEVICE, COMPUTER PROGRAM, COMPUTER-READABLE STORAGE MEDIUM, AND ELECTRIC DRIVE SYSTEM

#5
20230179134
2023-06-08

Pole switching in multi-phase machines

#6
20210336574
2021-10-28

Method and system for brushless wound field synchronous machines

#7
20210067079
2021-03-04

Motor control apparatus

#8
20200382039
2020-12-03

Control device for pole-number switching electric motor

#9
20200244201
2020-07-30

Controller for AC rotary machine

#10
20200204099
2020-06-25

Multi-phase motor/generator system with harmonic injection

#11
20200144952
2020-05-07

Dynamically reconfigurable motors and generators and systems with efficiency optimization

#12
20200136546
2020-04-30

Motor device

#13
20200127591
2020-04-23

Control apparatus for pole-changing rotating electric machine

#14
20200067442
2020-02-27

Electronic pole changing-based induction motor control system and control method thereof

#15
20200052638
2020-02-13

Rotary electric machine and rotary electric machine system

#16
20190363660
2019-11-28

Multi-phase motor system and control method

#17
20190334420
2019-10-31

Pole-number-changing rotary electric machine and driving method of pole-number-changing rotary electric machine

#18
20190165661
2019-05-30

Line start two-speed brushless motor

#19
20190165630
2019-05-30

Electric machine, activation unit and method for operating an electric machine

#20
20190068107
2019-02-28

Motor/generator system and fault tolerant control method

#21
20190068103
2019-02-28

Motor system and control method

#22
20180287541
2018-10-04

High-low-voltage conversion star multi-phase variable-frequency drive system

#23
20180054149
2018-02-22

Synchronous motor having component identical to that of another kind of synchronous motor and method of manufacturing synchronous motors

#24
20180034401
2018-02-01

Dynamically reconfigurable motors and generators and systems with efficiency optimization

#25
20170366129
2017-12-21

Pole-number-changing rotary electric machine and driving method for pole-number-changing rotary electric machine

#26
20170343082
2017-11-30

Drive train and method for operating a drive train

#27
20160301348
2016-10-13

Dynamically reconfigurable motors and generators and systems

#28
20160276889
2016-09-22

Multiphase induction motor with flux weakening

#29
20160090960
2016-03-31

Multiphase induction motor with configurable windings

#30
20160090959
2016-03-31

Nine phase induction motor starter/alternator

#31
20120268053
2012-10-25

Alternating current machine with increased torque above and below rated speed for hybrid/electric propulsion systems

#32
20120206083
2012-08-16

Winding switching apparatus and winding switching system

#33
20120043921
2012-02-23

Control of pole-change induction motors

#34
20110248565
2011-10-13

Method and apparatus for dynamic load sharing

#35
20110109258
2011-05-12

2 speed 2/4-pole PSC/PSC motor with independent main windings and shared auxiliary winding

#36
20110012545
2011-01-20

Method for controlling a multiphase electric motor operating in star-connected mode

#37
20100237815
2010-09-23

Apparatus for switching windings of AC three-phase motor

#38
20100133826
2010-06-03

Method and apparatus for generating power in a wind turbine

#39
20100123427
2010-05-20

PSC motor with 4/6 pole common windings

#40
20100019714
2010-01-28

Alternating current machine with increased torque above and below rated speed for hybrid electric propulsion systems

#41
20090121688
2009-05-14

Pole count changing generator

#42
20080150494
2008-06-26

Pole shifting generator

#43
20080001580
2008-01-03

Coarse voltage regulation of a permanent magnet generator (PMG)

#44
20070290647
2007-12-20

Motor controller

#45
20070138985
2007-06-21

Method and system for selectively operating an electric motor

#46
20060273766
2006-12-07

Permanent-magnet generator with high-power output

#47
20060181238
2006-08-17

Variable speed motor

#48
20060108957
2006-05-25

Motor controller

#49
19034375
2025-11-25

Variable pole system for electric motors

#50
18671788
2025-01-28

Variable pole system for electric motors