ClassID:

143295

F04B2203/0204 - CPC Classification

Classification description:

Motor parameters of rotating electric motors Frequency of the electric current

Recent Application in this class:
#1
20260029182
2026-01-29

CONTROL DEVICE, REFRIGERATION SYSTEM, CONTROL METHOD, AND CONTROL PROGRAM

#2
20250376979
2025-12-11

MOTOR POWER OPTIMIZATION FOR DOWNHOLE MOTORS

#3
20250180028
2025-06-05

METHOD OF CONTROLLING A PUMP AND MOTOR

#4
20250067259
2025-02-27

BOOSTER PUMP CONTROLLER AND METHOD OF USE

#5
20240159232
2024-05-16

Electrical submersible pump control

#6
20230287775
2023-09-14

AUTOMATICALLY CONTROLLING A POWER RAMP RATE OF A MOTOR OF A PUMP SYSTEM

#7
20230243351
2023-08-03

Controlling a discharge pressure from a pump

#8
20230068188
2023-03-02

Method of controlling a pump and motor

#9
20220349636
2022-11-03

System and method for operational acoustic optimization of a variable speed compressor and refrigerator

#10
20220196008
2022-06-23

METHOD FOR CORRECTING PUMP MODEL

#11
20220120270
2022-04-21

Power-saving optimization operation method and switching point determining method for water pump unit

#12
20220049692
2022-02-17

Operating method of a compressor of a refrigerating machine and compressor of a refrigerating machine

#13
20220010793
2022-01-13

Electrical submersible pump control

#14
20210340977
2021-11-04

Variable capacity compressor operation mode determination method and device, variable capacity compressor, and air conditioner

#15
20210324840
2021-10-21

Synchronization of supply flow paths

#16
20210270260
2021-09-02

Compressor cylinder switching control method and device, unit and air conditioning system

#17
20200284251
2020-09-10

Pressure safety shutoff

#18
20200088189
2020-03-19

Method of controlling a pump and motor

#19
20190024647
2019-01-24

Synchronization of supply flow paths

#20
20190017508
2019-01-17

Variable speed compressor protection system and method

#21
20180258926
2018-09-13

PUMP SYSTEM

#22
20180194200
2018-07-12

On-board fluid machine

#23
20180135607
2018-05-17

Method For Operating The Fluid Delivery System

#24
20180080443
2018-03-22

Control system and method of a VFD-based pump and pump system

#25
20180069487
2018-03-08

Power conversion circuit board, and electric compressor

#26
20180038364
2018-02-08

METHOD FOR OPERATING AN UNDULATING DIAPHRAGM PUMP AND AN UNDULATING DIAPHRAGM PUMP OPERATING SYSTEM

#27
20170234117
2017-08-17

Method of controlling a pump and motor

#28
20170051740
2017-02-23

Variable speed compressor protection system and method

#29
20160001624
2016-01-07

Compressor arrangement for compressed air supply facility

#30
20150125312
2015-05-07

Method of operating a pumping system

#31
20140286793
2014-09-25

Current limited pulse width modulation controlled motor

#32
20140196490
2014-07-17

System and method for controlling a variable speed drive of a compressor motor

#33
20140056720
2014-02-27

Pump system

#34
20140048004
2014-02-20

Method of and system for evacuating fluid in a sea vessel

#35
20140044561
2014-02-13

Controller for controlling a frequency inverter and control method

#36
20130240043
2013-09-19

Variable speed compressor protection system and method

#37
20130228345
2013-09-05

Control of the electric motors of a pump unit of a fire protection system

#38
20130216357
2013-08-22

Feed water pump control device

#39
20130156606
2013-06-20

Washing appliance and control method thereof

#40
20130098089
2013-04-25

Device and method for controlling compressor, and refrigerator including same

#41
20130045118
2013-02-21

Smart blow-down system for variable frequency drive compressor units

#42
20120235619
2012-09-20

Pump system and method for operating the same

#43
20110133575
2011-06-09

In-vehicle integrated-inverter electric compressor

#44
20110132463
2011-06-09

Synchronization of supply flow paths

#45
20110107873
2011-05-12

Method of degassing molten metal

#46
20110095659
2011-04-28

Integrated-inverter electric compressor and inverter unit thereof

#47
20110091337
2011-04-21

Integrated-inverter electric compressor

#48
20110056235
2011-03-10

LINEAR ELECTRIC COMPRESSOR AND REFRIGERANT CIRCUIT

#49
20100310382
2010-12-09

Method of controlling a pump and motor

#50
20100303648
2010-12-02

Inverter-integrated electric compressor

#51
20100247349
2010-09-30

Integrated-inverter electric compressor

#52
20100232983
2010-09-16

Inverter driven compressor operation method and compressor drive device

#53
20100181876
2010-07-22

INVERTER-INTEGRATED ELECTRIC COMPRESSOR

#54
20100143167
2010-06-10

ELECTRIC COMPRESSOR WITH INTEGRAL INVERTER

#55
20100143165
2010-06-10

ELECTRIC COMPRESSOR WITH INTEGRAL INVERTER

#56
20100074772
2010-03-25

ELECTRIC COMPRESSOR FOR AUTOMOBILE USE

#57
20100074770
2010-03-25

Integrated-inverter electric compressor

#58
20100047080
2010-02-25

Method of operating a pumping system

#59
20100014989
2010-01-21

Pump jack pump-off control method and pump jack control apparatus

#60
20100014987
2010-01-21

Control device for a power unit

#61
20090304524
2009-12-10

Method of operating a pumping system

#62
20090291002
2009-11-26

Integrated electric compressor

#63
20090090118
2009-04-09

Variable speed compressor protection system and method

#64
20080317607
2008-12-25

Smart blow-down system for variable frequency drive compressor units

#65
20080246431
2008-10-09

Apparatus and method of driving compressor

#66
20080187298
2008-08-07

VSD control

#67
20080131287
2008-06-05

Vsd Control

#68
20080112823
2008-05-15

Air compressor

#69
20080034922
2008-02-14

Method of degassing molten metal

#70
20070115707
2007-05-24

Vehicle auxiliary machine having an inverter circuit

#71
20060267540
2006-11-30

PUMP DRIVEN BY DUAL WOUND VARIABLE FREQUENCY INDUCTION MOTOR

#72
20060230781
2006-10-19

Compressor having internally mounted inverter

#73
20060198744
2006-09-07

Skipping frequencies for variable speed controls

#74
20060067834
2006-03-30

Method for mitigating rod float in rod pumped wells

#75
20060064998
2006-03-30

Inverter-integrated motor for an automotive vehicle

#76
20050223727
2005-10-13

Inverter-integrated motor for an automotive vehicle

#77
20050204766
2005-09-22

Refrigerant cycle apparatus

#78
20050163622
2005-07-28

Vacuum pump control device and vacuum device

#79
20050095140
2005-05-05

Rod saver speed control method and apparatus

#80
20050086959
2005-04-28

Method and apparatus for variable frequency controlled compressor and fan