| 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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| 11/13/2008 | WO2008136094A1 Electric drive system and hybrid drive system | 
| 11/13/2008 | US20080278109 System and Method for Controlling Input Line Harmonics in a Motor Drive | 
| 11/13/2008 | DE112006001604T5 Stromwandlungssteuervorrichtung, Stromwandlungssteuerverfahren und Stromwandlungssteuerprogramm Power conversion controller and power conversion control method and power conversion control program | 
| 11/13/2008 | DE102008019569A1 Wechselrichtertopologie für einen Elektromotor Inverter topology for an electric motor | 
| 11/12/2008 | EP1990910A1 Motor drive device, hybrid vehicle using the same, and electric power conversion device stop/control method | 
| 11/12/2008 | CN201150047Y AC frequency conversion energy-saving control cabinet for excavator | 
| 11/12/2008 | CN201150046Y Control module of industry high-efficiency variable-frequency control system display unit | 
| 11/12/2008 | CN201150045Y All digital speed-regulating control cabinet for rotary drill | 
| 11/12/2008 | CN201147849Y Variable frequency speed adjusting automatic lathe | 
| 11/12/2008 | CN201147848Y Variable frequency multi-speed automatic lathe | 
| 11/12/2008 | CN101304234A Power converters | 
| 11/12/2008 | CN101304233A Coiling type asynchronous motor rotor voltage/frequency synchronous tracking timing control system | 
| 11/12/2008 | CN100433540C AC motor control method and control device | 
| 11/12/2008 | CN100433539C Motor control apparatus and electric appliance using the same | 
| 11/12/2008 | CN100433536C Voltage space vector-based modulation method | 
| 11/11/2008 | US7449854 PWM signal generation apparatus and method thereof and motor control apparatus and method thereof | 
| 11/11/2008 | CA2630939A1 Power converters | 
| 11/06/2008 | WO2008097749A3 Variable speed drive with integral bypass contactor | 
| 11/06/2008 | US20080272732 Method and system for motor control with delay compensation | 
| 11/06/2008 | US20080272731 Method and system for resolver alignment in electric motor system | 
| 11/05/2008 | CN201146481Y Medium-voltage motor slip-control digital intelligence speed-regulating device without speed sensor | 
| 11/05/2008 | CN201146450Y Combined frequency convertor for mining | 
| 11/05/2008 | CN201144849Y Intelligent energy-saving axial flow fan | 
| 11/05/2008 | CN101299591A Method and system for motor control with delay compensation | 
| 11/05/2008 | CN101299590A Anti-windup control for a current regulator of a pulse width modulation inverter | 
| 11/05/2008 | CN100431257C Method and device for the sensor reduced regulation of a permanent magnet excited synchronous machine | 
| 11/05/2008 | CN100430308C Elevator control device | 
| 10/30/2008 | WO2008129904A1 Controller for motor | 
| 10/30/2008 | WO2008129658A1 Electric motor control apparatus | 
| 10/30/2008 | WO2008129623A1 Power supply regenerative converter | 
| 10/30/2008 | US20080265832 Motor driving system and motor driving method | 
| 10/30/2008 | US20080265831 Motor control apparatus | 
| 10/30/2008 | US20080265829 Inverter apparatus and a semiconductor device used for the same | 
| 10/30/2008 | US20080265809 Field weakening control apparatus for permanent magnet motor and electric power steering using same | 
| 10/30/2008 | US20080265808 Motor Drive Voltage-Boost Control | 
| 10/29/2008 | EP1985476A1 Electromagnetic suspension device | 
| 10/29/2008 | EP1984202A1 Electric motor drive apparatus and vehicle including the same | 
| 10/29/2008 | CN201142668Y Electricity-saving control device of frequency convertor | 
| 10/29/2008 | CN201142660Y Motor control device | 
| 10/29/2008 | CN201142659Y Double-H bridge structure of permanent-magnet motor frequency conversion controller | 
| 10/29/2008 | CN201142658Y Motor drive device of washing and drying machine | 
| 10/29/2008 | CN201142657Y Soymilk grinder control circuit with electric motor soft-start function | 
| 10/29/2008 | CN201142027Y Variable-frequency control device of shot-peening machine dust-removal fan | 
| 10/29/2008 | CN201140389Y Frequency conversion electric tool | 
| 10/29/2008 | CN101297471A 电动机驱动系统 The motor drive system | 
| 10/29/2008 | CN101295960A Method and system for operating a motor to avoid selected pulse ratio values | 
| 10/29/2008 | CN101295959A Digital sinusoidal voltage variable-frequency control electricity economizer | 
| 10/29/2008 | CN101295958A Inverter topology for an electric motor | 
| 10/29/2008 | CN101295957A Hybrid motor boost system and methods | 
| 10/29/2008 | CN101295937A Inverter apparatus and a semiconductor device used for the same | 
| 10/29/2008 | CN101295935A Optimizing PWM modulation method capable of restraining harmonic wave | 
| 10/29/2008 | CN101295933A Frequency conversion power source based on digital signal processor controlling | 
| 10/29/2008 | CN101294556A Solenoid pump | 
| 10/28/2008 | US7443643 Inverter device for automobile | 
| 10/28/2008 | US7443130 Motor driving control device | 
| 10/28/2008 | US7443127 Apparatus and method for motor control using table | 
| 10/28/2008 | US7443126 Controller for synchronous machine | 
| 10/23/2008 | WO2008126630A1 Motor control device, control method, and control program | 
| 10/23/2008 | WO2008126545A1 Fan motor controller and fan motor control method | 
| 10/23/2008 | WO2008126531A1 Controller and control method of hybrid vehicle | 
| 10/23/2008 | WO2008092154A8 System and method to extend synchronous operation of an active converter in a variable speed drive | 
| 10/23/2008 | US20080258673 Method and system for pulse position scheduling in electric drives | 
| 10/23/2008 | US20080258662 Power conversion system and power conversion control method | 
| 10/22/2008 | EP1981733A1 Power source apparatus for vehicle, vehicle and method of controlling power source apparatus | 
| 10/22/2008 | EP1649592B1 Motor drive apparatus capable of accurately estimating demagnetization of permanent magnet motor | 
| 10/22/2008 | EP1649588B1 Voltage conversion device and computer-readable recording medium having program recorded thereon for computer to control voltage conversion by voltage conversion device | 
| 10/22/2008 | CN201138792Y Synchronous speed regulating motor and control apparatus thereof | 
| 10/22/2008 | CN101291132A Method and system for pulse position scheduling for electric drive | 
| 10/22/2008 | CN101290524A Fan circuit | 
| 10/22/2008 | CN101289798A Washing dryer | 
| 10/21/2008 | US7439703 Controller for synchronous machine | 
| 10/21/2008 | US7439702 Application of a switched reluctance motion control system in a chiller system | 
| 10/16/2008 | WO2008123368A1 Hybrid construction machine controlling method, and hybrid construction machine | 
| 10/16/2008 | US20080255796 Method and device for measuring rotation speed of rotating equipment | 
| 10/16/2008 | US20080253750 Protect-control device capable of limiting current for reducing noise resultling from switchover of motor | 
| 10/16/2008 | US20080252250 Motor Control Device | 
| 10/16/2008 | US20080252243 Ad conversion control circuit and related arts | 
| 10/15/2008 | EP1981166A1 Motor controller | 
| 10/15/2008 | CN201134785Y PWM motor controller | 
| 10/15/2008 | CN201134784Y Frequency-changing speed-regulating apparatus of rotor based on active filtering technique | 
| 10/15/2008 | CN201134783Y Mining flame-proof type intermediate voltage frequency-changing speed-regulating apparatus | 
| 10/15/2008 | CN201134782Y Speed regulating system of generator | 
| 10/15/2008 | CN201134781Y Gap controller for three phase AC motor | 
| 10/15/2008 | CN201133508Y Frequency conversion type intelligent type valve actuating unit | 
| 10/15/2008 | CN101288222A Motor drive system control device and electric vehicle using the same | 
| 10/15/2008 | CN101287951A Refrigerator compressor operating method and refrigerator | 
| 10/15/2008 | CN101286727A 电动机控制装置 A motor control unit | 
| 10/15/2008 | CN101286726A Driving device for electric machine and control method for driving motor | 
| 10/15/2008 | CN101286724A Direct torque control method for permanent magnetic synchronous electric machine | 
| 10/15/2008 | CN101286686A Brushless motor | 
| 10/15/2008 | CN101285601A Fume-collecting hood adjustable type frequency conversion intelligent fume exhauster | 
| 10/15/2008 | CN100426657C Fully digital dual-feedback speed-adjusting device of high-voltage motor | 
| 10/15/2008 | CN100426648C Method for driving induction motor | 
| 10/15/2008 | CN100426175C Mixed maximum power point-tracing control method of photovoltaic water-raising system | 
| 10/14/2008 | US7436144 Inverter apparatus | 
| 10/14/2008 | US7436142 Method for maintaining a direct voltage at the input of a DC/AC voltage converter, recording medium for this method, and electric vehicle | 
| 10/09/2008 | WO2008120580A1 Motor control device, and magnetic pole position estimation precision confirming method | 
| 10/09/2008 | WO2008120540A1 Drive controller and drive control method of motor | 
| 10/09/2008 | WO2008063580A3 Transient condition detection for an electric power generation system | 
| 10/09/2008 | WO2008005363A3 Parking control technique for permanent magnet motor drives with sinusoidal bemf |