| 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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| 04/18/2007 | CN2891456Y Internal feeding brushless variable speed AC motor |
| 04/18/2007 | CN1950613A System and method for variable speed operation of a screw compressor |
| 04/18/2007 | CN1949661A Method for maintaining a direct voltage at the input of a DC/AC voltage converter, recording medium for this method, and electric vehicle |
| 04/18/2007 | CN1949660A Intelligent controller for seamless embedded frequency change speed regulating system |
| 04/18/2007 | CN1949629A Electric machine based on transformer working principle and speed regulation thereof |
| 04/18/2007 | CN1311623C Inverter device |
| 04/18/2007 | CN1311622C Motor driver |
| 04/18/2007 | CN1311621C Frequency changer controller for driving motor and air-conditioner |
| 04/18/2007 | CN1311620C Method and device for controlling inductive motor regenerated energy flow and DC bus voltage in frequency modulation driving system |
| 04/17/2007 | US7205731 Control of vehicle motor |
| 04/17/2007 | CA2510649C Motor control system and method with adaptive current profile |
| 04/14/2007 | CA2550898A1 Pulse width modulation drive and method for ornaments with movable components |
| 04/12/2007 | WO2006088821A3 Safety interlock and protection circuit for permanent magnet motor drive |
| 04/12/2007 | CA2780097A1 Top drive drilling system and other applications using a low speed direct drive ac motor |
| 04/11/2007 | EP1772547A2 Method of controlling motor-driven washing machine and control system for the same |
| 04/11/2007 | EP1772546A2 Method of controlling motor-driven washing machine and control system for the same |
| 04/11/2007 | EP1772545A2 Method of controlling motor-driven washing machine and control system for the same |
| 04/11/2007 | CN2888742Y DC/AC inverter for AC motor and pump using the same |
| 04/11/2007 | CN1945964A Square-wave permanent magnet multiple frequency speed regulating synchronous cage motor |
| 04/11/2007 | CN1945963A DC bus powered crane power system |
| 04/11/2007 | CN1945939A Double mechanical port motor and its driving control system |
| 04/11/2007 | CN1310421C Apparatus and method for controlling inverter for driving a three-phase motor |
| 04/11/2007 | CN1310420C 电梯的控制装置 The elevator control apparatus |
| 04/11/2007 | CN1310416C Control device for permanent magnet type synchronous motor |
| 04/10/2007 | US7202628 Frequency converter, motor, motor drive system and maintenance method for motor drive system |
| 04/07/2007 | CA2558791A1 Process for maintaining continuous voltage at the entry to an ac- dc voltage converter, data medium for this process and electric vehicle |
| 04/05/2007 | US20070077467 Fuel cell system and method of correcting fuel cell current |
| 04/05/2007 | US20070075674 Motor control apparatus, motor control circuit, and method thereof |
| 04/04/2007 | CN2886916Y Power-saving device for single AC motor |
| 04/04/2007 | CN2886913Y Primary power supply for stationary transducer of motor testing station |
| 04/04/2007 | CN2886911Y Variable-frequency speed regulator with harmonic suppression |
| 04/04/2007 | CN1941609A High-performance cheap AC speed-adjusting system |
| 04/04/2007 | CN1941608A Household economical electric washer with speed-adjuster driven |
| 04/04/2007 | CN1939766A Power control apparatus, electrically powered vehicle and power control method of power system |
| 04/04/2007 | CN1309159C AC voltage-stabilizing, voltage and speed regulating device |
| 04/04/2007 | CN1308596C Torque control device |
| 04/03/2007 | US7199549 Feedback parameter estimation for electric machines |
| 04/03/2007 | US7199538 Motor driving system |
| 04/03/2007 | CA2391616C Power source device for a.c. elevator |
| 03/29/2007 | US20070069683 Electric machine and method of operating the electric machine |
| 03/29/2007 | US20070069682 Control device for synchronous motor |
| 03/29/2007 | US20070069673 Power control apparatus, electrically powered vehicle and power control method of power system |
| 03/29/2007 | DE19648985B4 Verfahren zum Steuern von Vektoren bei einem Asynchronmotor und vektorgesteuerte Wechselrichtervorrichtung A method of controlling an induction motor with vectors and vector-controlled inverter device |
| 03/29/2007 | DE10302602B4 Wechselrichter für einen Wechselstrom-Generator-Motor Inverter for an AC generator-motor |
| 03/29/2007 | DE102004053772B4 Antriebsvorrichtung Driving device |
| 03/28/2007 | CN1937399A Domestic electric washing machine using variable frequency driving with embedded thermal protection |
| 03/28/2007 | CN1937370A Electromechanical integrated machine tool chuck directly constituted of external rotor rotating electric machine |
| 03/28/2007 | CN1936757A Mixed maximum power point-tracing control method of photovoltaic water-raising system |
| 03/28/2007 | CN1307783C Motor control system |
| 03/28/2007 | CN1307779C Conversion device and its idle time compensation method |
| 03/28/2007 | CN1307768C Method and apparatus for detecting a failed thyristor |
| 03/27/2007 | US7197390 Electric vehicle with adaptive cruise control system |
| 03/27/2007 | US7196491 System and method for stall detection of a motor |
| 03/27/2007 | US7196490 Variable speed motor |
| 03/22/2007 | WO2006123843A3 Voltage control of upconverter in a motored vehicle drive |
| 03/22/2007 | US20070063667 Driving device of motor |
| 03/22/2007 | US20070063666 Driving device of motor |
| 03/22/2007 | US20070063665 Method and apparatus for monitoring motor status using induced motor voltage |
| 03/22/2007 | DE102005045122A1 Steuervorrichtung für eine dreiphasige Drehstrommaschine und Verfahren zum Betreiben der Steuervorrichtung A control apparatus for a three-phase machine and method for operating the control device |
| 03/22/2007 | DE10011295B4 Verfahren und Vorrichtung zum selektiven Löschen parasitärer Gleichgrößen im Spannungsstellbereich von Drehfeldmaschinen ohne Drehgeber Method and apparatus for selective deletion of parasitic dc components in the voltage operating range of induction machines without encoder |
| 03/21/2007 | CN2882115Y Speed regulating controller of passive non-loss soft switch chopper motor |
| 03/21/2007 | CN2881743Y Intelligent control system of large roof fan |
| 03/21/2007 | CN1934781A Motor controller |
| 03/21/2007 | CN1306695C Motor driving device |
| 03/21/2007 | CN1306694C Motor driving apparatus for use in a dishwasher |
| 03/21/2007 | CN1306686C Motor driver |
| 03/21/2007 | CN1306166C Driving devices of linear compressors |
| 03/15/2007 | US20070058404 Voltage conversion device |
| 03/15/2007 | DE102005043576A1 Verfahren zum Betrieb einer elektrischen Maschine Method for operating an electrical machine |
| 03/15/2007 | DE102005041825A1 Regelvorrichtung für eine dreiphasige Drehstrommaschine Control apparatus for a three-phase machine |
| 03/14/2007 | CN2879532Y Motor electricity-saving protector |
| 03/14/2007 | CN2879531Y Motor automatic speed-regulating, measuring control device |
| 03/14/2007 | CN1930071A Elevator control device |
| 03/14/2007 | CN1929281A Abnormity determining device for electric vehicle |
| 03/14/2007 | CN1927686A Elevator control device |
| 03/13/2007 | US7190599 Method for determining output currents of frequency converter |
| 03/13/2007 | US7190130 Electric motor pole position sensing method, pole position sensing apparatus, and electric motor control apparatus using the same |
| 03/13/2007 | US7188702 Electric power steering apparatus |
| 03/08/2007 | US20070055425 Electric power steering system |
| 03/08/2007 | US20070052384 Inverter circuit free from power-source-voltage fluctuation |
| 03/08/2007 | DE10394312T5 Umrichtervorrichtung Power converter |
| 03/07/2007 | CN2877141Y Frequency change speed regulator for slag tap belt conveyer |
| 03/07/2007 | CN2877140Y AC power current voltage phase comparing circuit |
| 03/07/2007 | CN1926758A Motor and motor drive system |
| 03/07/2007 | CN1925315A Method and device for realizing real-time control of motor rotation speed |
| 03/07/2007 | CN1925314A Voltage type variable-frequency control system using pulse width modulation synchronous switching |
| 03/07/2007 | CN1925313A Pulse width modulation frequency changing driving system for economical AC motor |
| 03/07/2007 | CN1925312A 电机速度控制电路 Motor speed control circuit |
| 03/07/2007 | CN1923113A 电真空吸尘器 Electric vacuum cleaners |
| 03/07/2007 | CN1303755C Transducer of active lowpass filter of taking feedback |
| 03/07/2007 | CN1303754C Phase controller of AC motor for air conditionning appts. and phase control method |
| 03/07/2007 | CN1303752C Controller for AC motor |
| 03/06/2007 | US7187154 Motor drive apparatus and electric power steering apparatus |
| 03/06/2007 | US7187147 Motor drive |
| 03/01/2007 | WO2006104930A3 System and method for optimizing motor performance by varying flux |
| 03/01/2007 | US20070046249 Motor control device |
| 02/28/2007 | EP1756926A1 Method for error handling in a converter circuit for wiring of three voltage levels |
| 02/28/2007 | CN2874924Y AC variable frequency driving circuit for electric tread mill |
| 02/28/2007 | CN2874923Y Power saving device |
| 02/28/2007 | CN2874922Y Variable frequency fume exhaust fan |