ClassID:

218464

H02P27/05 - 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 AC supply for both the rotor and the stator circuits, the frequency of supply to at least one circuit being variable

Recent Application in this class:
#1
20250266778
2025-08-21

ELECTRIC DRIVE SYSTEM WITH STATIC PULSED POWER TRANSFER

#2
20240364250
2024-10-31

EXTERNALLY EXCITED ELECTRIC MACHINE WITH A NATURAL BOOST VOLTAGE

#3
20240297604
2024-09-05

DEVICE FOR THE DE-EXCITATION OF AT LEAST ONE ROTOR WINDING OF A SYNCHRONOUS MOTOR, SYNCHRONOUS MOTOR, METHOD FOR OPERATING A SYNCHRONOUS MOTOR, MOTOR VEHICLE

#4
20240250632
2024-07-25

MOTOR CONTROL SYSTEM

#5
20240243680
2024-07-18

Rotor-To-Stator Reduction Factor Evaluation for Externally-Excited Synchronous Machines

#6
20230262945
2023-08-17

ELECTRICAL SWITCHING DEVICE, ELECTRICAL DRIVE LAYOUT AND MOTOR VEHICLE

#7
20220029569
2022-01-27

System for controlling a plurality of synchronous permanent magnet electronically commutated motors

#8
20210336572
2021-10-28

Methods and systems for detecting a rotor position and rotor speed of an alternating current electrical machine

#9
20210126566
2021-04-29

Low-speed high torque motor control and foam system

#10
20210021225
2021-01-21

Kinetic energy recovery system with flywheel

#11
20190113941
2019-04-18

Motor drive assembly

#12
20190020294
2019-01-17

Motor driving device, air conditioning device including same, and control method for motor driving device

#13
20180358875
2018-12-13

Charging system using wound rotor synchronous motor

#14
20180278194
2018-09-27

Electric power control method and electric power control device

#15
20180278183
2018-09-27

Control system, controller, and control method for wound induction machine

#16
20170373627
2017-12-28

Apparatus for controlling three phase rotary electric machine reducing peak value of phase current

#17
20160094176
2016-03-31

Drive system

#18
20130057195
2013-03-07

Variable speed induction motor with single external power supply and control method thereof

#19
20110267012
2011-11-03

Methods and apparatuses for elimination of torque pulsation in doubly fed induction generators using the field reconstruction method

#20
20110140433
2011-06-16

Method of controlling a variable speed wind turbine

#21
20110050150
2011-03-03

ELECTRIC MOTOR

#22
20080315584
2008-12-25

Engine start system with a regulated permanent magnet machine

#23
20070278985
2007-12-06

System and method for starting a wound rotor motor

#24
20070052244
2007-03-08

Control system for doubly fed induction generator

#25
20050189896
2005-09-01

Method for controlling doubly-fed machine

#26
18956501
2026-03-24

Electric vehicle dual use inverter

#27
13888876
2015-10-13

For cooling an avionics device with a fan utilizing a single phase AC motor