| 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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| 11/09/2011 | CN101534029B Polyphase induction motor with large capacity and high torque density | 
| 11/09/2011 | CN101395032B Driving control device for electricity driving vehicle | 
| 11/08/2011 | US8054032 Discontinuous pulse width modulation for double-ended inverter system | 
| 11/08/2011 | US8054031 Converter device, rotating electrical machine control device, and drive device | 
| 11/08/2011 | US8052571 Control device and control method for hybrid vehicle | 
| 11/08/2011 | CA2629827C Motor driving system and motor driving method | 
| 11/03/2011 | WO2011135695A1 Power conversion device | 
| 11/03/2011 | WO2011135694A1 Power conversion device | 
| 11/03/2011 | WO2010122651A9 Power conversion device | 
| 11/03/2011 | US20110266992 Power Conversion Device | 
| 11/03/2011 | DE102010028497A1 Betriebsverfahren und Stromversorgungseinrichtung für eine fremderregte bürstenlose Synchronmaschine Methods of operation and power supply device for a separately excited brushless synchronous machine | 
| 11/03/2011 | DE102010028495A1 Betriebsverfahren und Stromversorgungseinrichtung für eine mit Drehstrom fremderregte bürstenlose Synchronmaschine Methods of operation and power supply device for a separately excited with three-phase brushless synchronous machine | 
| 11/02/2011 | CN202026275U Novel power supply circuit for motor control system | 
| 11/02/2011 | CN202026274U Variable-frequency speed regulator for welding-strip processing | 
| 11/02/2011 | CN101454514B Work vehicle | 
| 10/27/2011 | WO2011133937A2 Apparatus for selecting speed of electrically commutated motor for use in hvac system | 
| 10/27/2011 | WO2011133234A2 Blower motor for hvac systems | 
| 10/27/2011 | WO2011132269A1 Control device for motor drive system and vehicle having same | 
| 10/27/2011 | WO2010060585A3 Converter | 
| 10/27/2011 | US20110260662 Motor driving apparatus having function of dynamically switching converter operation mode of ac/dc converter | 
| 10/26/2011 | EP2380272A1 Control system for ac motor | 
| 10/26/2011 | CN202019308U Special frequency converters for roll cutting machine | 
| 10/26/2011 | CN202019307U Special frequency converter for splint cutting machine | 
| 10/26/2011 | CN202019290U Constant-current source circuit for remote operation box of frequency converter | 
| 10/26/2011 | CN202019228U Double power supply device of high voltage frequency converter controller | 
| 10/26/2011 | CN101817473B Frequency conversion system of rotor of alternating current mine hoist | 
| 10/26/2011 | CN101507100B AC motor vector control apparatus | 
| 10/25/2011 | US8044633 Drive device of electric motor | 
| 10/25/2011 | US8044632 Power conversion device | 
| 10/25/2011 | US8044631 Power conversion systems and methods for controlling harmonic distortion | 
| 10/25/2011 | US8044620 Driving apparatus for multi-phase AC synchronous motor | 
| 10/20/2011 | WO2011129423A1 Rotor phase/velocity estimation device for alternating-current motor | 
| 10/20/2011 | WO2011128770A2 Electric machine, control device for controlling said electric machine, electric propulsion system comprising said electric machine and said control device, and method for controlling said electric machine | 
| 10/20/2011 | WO2011128219A2 Control device | 
| 10/20/2011 | US20110254477 Blower motor for hvac systems | 
| 10/19/2011 | CN202014223U Constant tension adhesive plaster coiling control device of calender | 
| 10/19/2011 | CN202014222U Energy-saving frequency conversion compensation control cabinet | 
| 10/19/2011 | CN202014221U Power-down processing circuit of frequency conversion dragging system controlled by PLC | 
| 10/19/2011 | CN202012334U Stepless speed regulating AC servo motor driving system | 
| 10/19/2011 | CN102224673A Electric energy storage integrated within or proximate to electrically driven flight control actuators | 
| 10/19/2011 | CN102224304A Rotation control device for work machinery, control program and work machinery | 
| 10/19/2011 | CN102223139A Method for realizing direct torque control by single current sensor | 
| 10/19/2011 | CN102223138A Motor synchronous modulation method and control system thereof | 
| 10/19/2011 | CN102223137A Method and arrangement in connection with electric device system | 
| 10/19/2011 | CN102223136A Non-energy-storing motor-driven system for complementary power supply of wind power generation and electrical network | 
| 10/19/2011 | CN102223135A Electricity-saving system of oil pumping unit | 
| 10/19/2011 | CN102223132A Method for controlling multi-stator arc motor for large telescope | 
| 10/19/2011 | CN101420197B Control device for driving a brushless DC motor | 
| 10/18/2011 | US8040101 Alternating current motor drive circuit and electric vehicle drive circuit | 
| 10/18/2011 | US8040094 Voltage clamping and energy recovery circuits | 
| 10/13/2011 | US20110248664 Energy converter | 
| 10/12/2011 | EP2375558A1 Motor drive device, and compressor and refrigerator using same | 
| 10/12/2011 | EP1965083B1 Hydraulic unit and method of controlling speed of motor in hydraulic unit | 
| 10/12/2011 | CN202009362U Power supply system | 
| 10/12/2011 | CN102215027A Cascade speed control device | 
| 10/12/2011 | CN102215026A Control device based on neutral point migration technology of high-voltage transducer of DSP (Digital Signal Processor) and FPGA (Field Programmable Gate Array) | 
| 10/12/2011 | CN102215020A Electric motor driving device and vehicle equipped with the same | 
| 10/12/2011 | CN102215007A Power control circuit board | 
| 10/12/2011 | CN102213084A Stroke frequency regulating device of oil pumping machine | 
| 10/12/2011 | CN101622780B Device for controlling electric vehicle and electric vehicle equipped with the control device, and electric vehicle control method and computer readable recording medium on which program for allowing | 
| 10/11/2011 | US8035934 Shift switching device and shift switching method | 
| 10/11/2011 | US8035330 Apparatus and method for driving synchronous motor | 
| 10/06/2011 | WO2011122105A1 Control device for an electric motor drive device | 
| 10/06/2011 | WO2011122104A1 Control device for an electric motor drive device | 
| 10/06/2011 | US20110245299 Nicotinic acid compositions for treating hyperlipidemia and related methods therefor | 
| 10/06/2011 | US20110241583 Control device of motor driving apparatus | 
| 10/06/2011 | US20110241580 Motor drive system with bus voltage control | 
| 10/05/2011 | EP2372900A1 Motor control device | 
| 10/05/2011 | EP2371056A1 Electric energy storage integrated within or proximate to electrically driven flight control actuators | 
| 10/05/2011 | CN202004723U Frequency conversion speed regulation device of stringing type direct current locomotive for mines | 
| 10/05/2011 | CN202004722U Speed regulating motor for braiding machine | 
| 10/05/2011 | CN202004721U Variable-frequency energy-saving system of air cabinet | 
| 10/05/2011 | CN202004720U Alarming automatic resetting device of frequency converter of continuous casting machine | 
| 10/05/2011 | CN202004657U Novel land type variable frequency power source | 
| 10/05/2011 | CN202001348U Frequency conversion control system of fan | 
| 10/05/2011 | CN102208896A Motor driving apparatus having fault diagnostic function | 
| 10/05/2011 | CN102208895A Method and device for detecting initial position angle of electro-excitation synchronous machine rotor | 
| 10/05/2011 | CN102208879A Direct-current to three-phase alternating-current inverter system | 
| 10/05/2011 | CN102208878A DC to three-phase AC inverter system | 
| 10/05/2011 | CN101924437B Dual-mechanical port motor and drive control system thereof | 
| 10/05/2011 | CN101559726B Drive device, hybrid vehicle equipped with the drive device and control method for the drive device | 
| 10/05/2011 | CN101496277B Power change device | 
| 10/04/2011 | US8030878 Motor driving device having power failure detection function | 
| 10/04/2011 | US8030874 Power converting apparatus | 
| 09/29/2011 | WO2011117932A1 Inverter device and electric device using same | 
| 09/29/2011 | US20110234136 Power factor correction drive circuit topologies and control for switched reluctance machines | 
| 09/29/2011 | US20110234127 Current limiting device for vehicle | 
| 09/29/2011 | US20110234126 Method and apparatus to monitor an electric motor control circuit | 
| 09/29/2011 | US20110234124 Optimized power demand control system for electrical motors | 
| 09/29/2011 | CA2794178A1 Variable electrical generator | 
| 09/28/2011 | EP2369736A1 Motor drive device | 
| 09/28/2011 | CN201994913U 直接转矩控制牵引变频调速系统 Direct Torque Control traction inverter system | 
| 09/28/2011 | CN201994912U 高振强振动机械的智能变频超前控制系统 Ko advanced intelligent frequency mechanical vibration control system | 
| 09/28/2011 | CN201994911U 电动机智能节电控制器 Intelligent power-saving motor controller | 
| 09/28/2011 | CN201994910U 塑料薄膜卷取用异步电机变频控制柜 Plastic film winding asynchronous motor frequency control cabinet | 
| 09/28/2011 | CN201994899U 一种永磁同步电机的控制系统 A permanent magnet synchronous motor control system | 
| 09/28/2011 | CN201994802U 风扇用的多相外转子式变频感应马达 Fan multiphase outer rotor type motor with variable frequency induction | 
| 09/28/2011 | CN201994731U 一种车用电机驱动器 A vehicle with a motor drive | 
| 09/28/2011 | CN102204083A Method and system for actuating a variable speed electric engine for a compressor, variable capacity compressor and refrigeration system | 
| 09/28/2011 | CN102204082A Control device for permanent magnet synchronization electric motor |