| Patents for H02P 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage (13,284) |
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| 08/06/2008 | EP1953477A1 Refrigerator compressor operating method and refrigerator |
| 08/06/2008 | CN201095574Y Winch frequency conversion driving system for vessel |
| 08/06/2008 | CN101237216A Method for improving frequency converter frequency via 7-section space vector calculation |
| 08/06/2008 | CN101237215A Car air-conditioner frequency conversion control system and its method |
| 08/06/2008 | CN101237205A Magnetic control stepless regulating transmission |
| 08/06/2008 | CN101237194A Three-phase electric power converter, and control device and control method of three-phase alternating current motor |
| 08/06/2008 | CN100409563C Motor intelligent power-saving protector |
| 08/06/2008 | CN100409530C Converter protector |
| 08/06/2008 | CN100408749C Inverter of washing machine and inverter of washing machine/dryer |
| 08/05/2008 | US7408323 Frequency converter, motor, motor drive system and maintenance method for motor drive system |
| 08/05/2008 | US7408321 Control arrangement for an induction motor compressor having at least three windings, a torque-augmentation circuit, a starting capacitor and a resistive element |
| 08/05/2008 | US7408320 Apparatus for power control by phase gating and a method for harmonic reduction |
| 07/31/2008 | WO2008092154A2 System and method to extend synchronous operation of an active converter in a variable speed drive |
| 07/31/2008 | WO2008090924A1 Vehicle and its control method |
| 07/31/2008 | WO2008090776A1 Electric leak detecting circuit and electric leak detecting method |
| 07/31/2008 | WO2008090254A1 Method and apparatus for controlling a motor |
| 07/31/2008 | US20080180056 Phase current detection method, inverter control method, motor control method and apparatus for carrying out these methods |
| 07/31/2008 | US20080180055 Systems and methods for improved motor drive power factor control |
| 07/31/2008 | US20080179122 Electric motor control system, series hybrid vehicle, electric motor control apparatus, and electric motor control method |
| 07/30/2008 | EP1950882A2 Method and device for operating a rotating current machine controllable through pulse width modulation with multiple phase coils |
| 07/30/2008 | EP1950878A1 Motor drive system |
| 07/30/2008 | EP1949348A1 Method for controlling a roller-blind actuator |
| 07/30/2008 | CN101233677A Inverter device |
| 07/30/2008 | CN101232270A Frequency conversion control method of alternating current frequency converter |
| 07/30/2008 | CN101232269A Motor drive system for railway vehicle |
| 07/30/2008 | CN101232254A Power transformer |
| 07/29/2008 | US7405534 Apparatus and method for controlling velocity of motor |
| 07/29/2008 | US7405528 Global closed loop control system with DV/DT control and EMI/switching loss reduction |
| 07/24/2008 | WO2008087956A1 Power conversion control device and its ac motor start method |
| 07/24/2008 | US20080174262 Method of powering a single-phase electric motor and a power supply system for implementing such a method |
| 07/24/2008 | US20080174258 System and method to extend synchronous operation of an active converter in a variable speed drive |
| 07/24/2008 | DE19511838B4 Betriebsbefehlsvorrichtung für einen Wechselrichter Operation command device for an inverter |
| 07/23/2008 | EP1946437A1 Apparatus and method for driving 2-phase srm motor |
| 07/23/2008 | CN201090479Y Fan operating control circuit |
| 07/23/2008 | CN101227168A Apparatus and method for detecting input current of inverter |
| 07/23/2008 | CN101227167A Motor drive apparatus |
| 07/23/2008 | CN101227166A Induction motor controller |
| 07/23/2008 | CN101227164A Direct current compressor drive circuit |
| 07/23/2008 | CN101227155A Simple five power level variable frequency speed regulator apparatus |
| 07/23/2008 | CN101227154A Simple seven power level variable frequency speed regulator apparatus |
| 07/23/2008 | CN100404402C Elevator control device and elevator system |
| 07/22/2008 | US7403404 Power inverter system and method of correcting supply voltage of the same |
| 07/22/2008 | US7402977 Apparatus and method for controlling operation of reciprocating motor compressor |
| 07/17/2008 | WO2008085101A1 Method for obtaining a predetermined position of an antenna |
| 07/17/2008 | WO2008084775A1 Inverter compressor operation method and compressor drive device |
| 07/17/2008 | WO2007077372A3 Method for controlling a polyphase voltage inverter |
| 07/17/2008 | WO2007074267A3 Polyphase voltage converter control method |
| 07/17/2008 | US20080169783 Induction motor controller |
| 07/17/2008 | US20080169775 Control Apparatus for Electric Car |
| 07/16/2008 | CN101223686A Motor drive system |
| 07/16/2008 | CN101223685A Secondary battery control device and control method |
| 07/16/2008 | CN101222205A Motor control method and apparatus |
| 07/16/2008 | CN101222204A Phase current detection method and apparatus |
| 07/16/2008 | CN101222203A Control apparatus for electric car |
| 07/16/2008 | CN101222202A Multi-component timing method of power system especially for oil pump |
| 07/16/2008 | CN101222201A Frequency-conversion pole-changing binary timing control cabinet especially for oil pump motor |
| 07/16/2008 | CN100403648C Fan speed regulation system simultaneously possessing PWM and external control |
| 07/16/2008 | CN100403628C Reversible motor |
| 07/15/2008 | US7400110 Smart power converter |
| 07/15/2008 | US7400109 Inverter circuit and compressor |
| 07/15/2008 | CA2269001C Controller for a door operator |
| 07/10/2008 | WO2008081722A1 Load device control device and vehicle |
| 07/10/2008 | WO2008081509A1 Drive controller of electrically driven vehicle |
| 07/10/2008 | WO2007079216A3 Reference circuits for sampled-data circuits |
| 07/10/2008 | US20080166246 System for protecting bearings and seals of a refrigerant compressor |
| 07/09/2008 | EP1941610A1 Actuator for automotive climatization units |
| 07/09/2008 | CN201083194Y Air compressor frequency conversion energy-saving device |
| 07/09/2008 | CN201083124Y Mine roller drill high protection type alternating current digitization transmission system |
| 07/09/2008 | CN101218742A Polyphase inverter, control method therefor, blower, and polyphase current output system |
| 07/09/2008 | CN101217261A A high-power frequency speed control system of high pressure jet water pump of dredger |
| 07/09/2008 | CN101217260A A slip control digital intelligent speed regulation and system of motor without speed transducer |
| 07/09/2008 | CN101214644A Frequency conversion electric tool |
| 07/09/2008 | CN100401632C Motor controller and steering device |
| 07/09/2008 | CN100401631C System and method for automatic current limit control |
| 07/03/2008 | US20080157710 Beat-less controller for permanent magnet motor |
| 07/03/2008 | DE202008005843U1 Einrichtung zur Drehzahlregelung für Asynchronmotoren Means for speed control of induction motors |
| 07/02/2008 | CN201081849Y Energy-saving control device |
| 07/02/2008 | CN201080402Y Frequency modulation construction hoist |
| 07/02/2008 | CN201080140Y Digital code frequency conversion electric car |
| 07/02/2008 | CN100399697C Controller for a wound-rotor induction motor |
| 07/02/2008 | CN100399696C Delay compensation for stable current regulation when using variable-delay random PWM switching |
| 07/01/2008 | US7394214 Control unit for electric power steering apparatus |
| 06/26/2008 | WO2008075828A1 Drive control apparatus and method for refrigerator type fan motor |
| 06/26/2008 | WO2008075532A1 Inverter device and its control method |
| 06/26/2008 | US20080150470 Controller for synchronous machine |
| 06/25/2008 | CN201078842Y Alternating current machine electricity economizer |
| 06/25/2008 | CN201078508Y Frequency conversion type intelligent valve electrically operated mechanism |
| 06/25/2008 | CN201077130Y Open type glue-smelting machine |
| 06/25/2008 | CN101208857A Operating three-phase equipment by single-phase power |
| 06/25/2008 | CN101207337A Current measuring arrangement of a frequency converter |
| 06/25/2008 | CN100397780C Motor control system and method with adaptive current profile |
| 06/25/2008 | CN100397779C Method for providing energy saving service to electric motor, and refrigeration air-condition device |
| 06/25/2008 | CN100397778C Brushless motor control utilizing independent phase parameters |
| 06/25/2008 | CN100397772C Method and apparatus for encoderless operation of permanent magnet synchronous motor in an elevator |
| 06/24/2008 | US7392158 Drive unit for compressor and refrigerator |
| 06/24/2008 | US7391180 Pulse width modulation control circuit for a multimode electrical machine, and a multimode electrical machine equipped with such a control circuit |
| 06/19/2008 | WO2008072574A1 Ac motor control device |
| 06/19/2008 | US20080143288 Synchronous motor control device |
| 06/19/2008 | US20080143286 Control apparatus for electric vehicles |
| 06/19/2008 | US20080143281 Secondary Battery Control Apparatus and Secondary Battery Control Method |