| 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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| 05/30/2012 | CN202261163U Multi-module variable frequency AC (alternate current) auxiliary system for locomotive |
| 05/30/2012 | CN202261162U Claw-pole motor driving system and fan driving system applying same |
| 05/30/2012 | CN202261161U Low-voltage frequency conversion control system for high-power alternating-current rolling mill |
| 05/30/2012 | CN202261160U Inverter air-conditioner compressor drive circuit |
| 05/30/2012 | CN202261159U Safe dragging system of high voltage elevator |
| 05/30/2012 | CN202261158U Intelligent frequency conversion speed adjusting device of high voltage motor |
| 05/30/2012 | CN202261157U Automatic energy saver of air compressor |
| 05/30/2012 | CN202261135U Permanent magnet synchronous traction motor four-quadrant operation speed regulator for storage battery electric locomotive |
| 05/30/2012 | CN202260450U Thermal-electric plant boiler high-pressure fan online power frequency/frequency conversion operation switch device |
| 05/30/2012 | CN1911705B Power supply device for vehicle and method of controlling the same |
| 05/30/2012 | CN102484448A 可变线圈配置系统、装置以及方法 Variable coil configuration system, apparatus and method |
| 05/30/2012 | CN102484438A Anomaly detection device for a permanent magnet synchronous electric motor |
| 05/30/2012 | CN102481859A Electric Motor Drive System For An Electric Vehicle |
| 05/30/2012 | CN102480266A Variable frequency speed regulation safety control device for mining industry |
| 05/30/2012 | CN102480265A Novel alternating-current motor variable-frequency speed control system |
| 05/30/2012 | CN102480264A Multiprocessor controlled induction motor four-quadrant variable frequency speed regulation system |
| 05/30/2012 | CN102480259A 电动机控制装置、空气调节机 The motor control device, an air conditioner |
| 05/30/2012 | CN102480148A Battery power system |
| 05/30/2012 | CN101895253B Refrigeration control method realized by sinusoidal pulse width modulation |
| 05/30/2012 | CN101883706B Electrically driven power steering device |
| 05/30/2012 | CN101834552B Permanent magnet synchronous traction system of trunk high-speed vehicle |
| 05/30/2012 | CN101755383B Motor control device, drive device, and hybrid drive device |
| 05/30/2012 | CN101741299B Method for regulating speed of brushless direct current motor supplied with power by four-switch three-phase inverter |
| 05/30/2012 | CN101711453B A control system without position sensors for a synchronous electric motor |
| 05/30/2012 | CN101682279B Ac motor drive controller |
| 05/30/2012 | CN101592922B Device and method for supporting energy-saving operation and showing power-saving effect of energy-saving operation |
| 05/30/2012 | CN101572407B Apparatus for reducing leak current of elevator |
| 05/30/2012 | CN101379692B Electric motor drive apparatus, hybrid vehicle with the same and stop control method of electric power converting device |
| 05/29/2012 | US8188702 Rotating electrical machine control system and vehicle drive system |
| 05/29/2012 | US8188701 Power regenerative converter |
| 05/29/2012 | US8188694 Parallel power inverter motor drive system |
| 05/29/2012 | US8188693 DC bus boost method and system for regenerative brake |
| 05/24/2012 | WO2012068409A2 Ultra high efficiency transmission with grid-tied energy storage capability for a wind turbine or a fuel cell or a battery powered electric vehicle |
| 05/24/2012 | WO2012066939A1 Power control device and power control system |
| 05/24/2012 | WO2012066914A1 Power conversion apparatus |
| 05/24/2012 | WO2012066800A1 Electric current detection device and motor control device |
| 05/24/2012 | WO2012065806A1 Variable-speed drive provided with a supercapacitor module |
| 05/24/2012 | WO2011098485A3 Method for reducing the starting current of a polyphase machine operated by block commutation |
| 05/24/2012 | US20120126728 Integrated electric machine and silicon carbide power converter assembly and method of making same |
| 05/24/2012 | DE112010001309T5 Antriebssteuerungsvorrichtung für einen Elektromotor A drive control apparatus for an electric motor |
| 05/24/2012 | DE112010000468T5 Steuerungsvorrichtung für eineElektromotorantriebsvorrichtung Control device for an electric motor drive means |
| 05/24/2012 | DE112010000463T5 Steuerungsvorrichtung für eine Elektromotorantriebsvorrichtung Control device for an electric motor drive means |
| 05/24/2012 | DE112010000462T5 Stromquellenwechselrichter-vorrichtung Current source inverter device |
| 05/23/2012 | EP2456066A2 Low-inductance, high-efficiency induction machine |
| 05/23/2012 | EP2456065A2 High power-density, high back emf permanent magnet machine |
| 05/23/2012 | CN202231672U Full-automatic variable-frequency speed regulation device for high-pressure rotor |
| 05/23/2012 | CN202231671U Energy-saving control device for beam-pumping unit |
| 05/23/2012 | CN202231670U Special-purpose frequency converter for rotary cutting |
| 05/23/2012 | CN202231669U Reliable frequency converter |
| 05/23/2012 | CN202231668U Intelligent capacitance increase compensation device |
| 05/23/2012 | CN202231667U Energy saver of die casting machine |
| 05/23/2012 | CN202231666U Frequency conversion device capable of realizing dynamic parameter adjustment and energy-saving operation in oil production well |
| 05/23/2012 | CN202231664U Non-inductance vector frequency converter |
| 05/23/2012 | CN202231619U Novel frequency converter |
| 05/23/2012 | CN102474218A 电动机驱动装置 The motor driving device |
| 05/23/2012 | CN102474215A 电动机驱动装置的控制装置 The control means of the motor driving device |
| 05/23/2012 | CN102474209A 电动机驱动装置的功率消耗计算方法和利用功率消耗计算方法的电动机驱动装置的控制方法 Method for controlling the power consumption of the motor drive apparatus and a method for calculating the power consumption calculation method using a motor-driven |
| 05/23/2012 | CN102474208A 电动机驱动装置的控制装置 The control means of the motor driving device |
| 05/23/2012 | CN102474207A 控制装置 Control device |
| 05/23/2012 | CN102474198A 逆变器装置 The inverter device |
| 05/23/2012 | CN102474175A 用来控制电感负载的方法和装置 Method and apparatus for controlling an inductive load |
| 05/23/2012 | CN102468766A 组合变频器 Combination Drive |
| 05/23/2012 | CN101860319B Multi-target large powder inverter common-mode voltage suppressing method |
| 05/23/2012 | CN101841210B Constant frequency and constant voltage sine-wave power unit consisting of axle generator and inverter |
| 05/23/2012 | CN101833607B Multi-objective hybrid particle swam optimization design method for double-fed wind power generator |
| 05/23/2012 | CN101814896B Remote control device and method for motor of submersible pump of offshore oil well |
| 05/23/2012 | CN101682283B Sensor-less control device for permanent-magnet synchronous electric motor |
| 05/23/2012 | CN101682280B Motor driving device, motor device, and integrated circuit device |
| 05/23/2012 | CN101595632B Method and apparatus for controlling a motor |
| 05/23/2012 | CN101490946B 可变磁通电动机驱动器系统 The variable-flux motor drive system |
| 05/23/2012 | CN101467344B 逆变器装置及空调机 Inverter device and air conditioners |
| 05/23/2012 | CN101420201B Method and system for controlling pulse width modulation in a power inverter in electric drives |
| 05/23/2012 | CN101388643B Power inverter module thermal management |
| 05/23/2012 | CN101111990B Control device for variable speed alternating current motor |
| 05/22/2012 | US8183817 Apparatus for switching windings of AC three-phase motor |
| 05/22/2012 | US8183816 Method for field-oriented operation to zero speed of an encoder-less asynchronous machine |
| 05/22/2012 | US8183813 Power supply arrangement |
| 05/22/2012 | US8183805 System for controlling the steady-state rotation of a synchronous electric motor |
| 05/22/2012 | CA2667025C Vector controller for permanent-magnet synchronous electric motor |
| 05/18/2012 | WO2012064197A1 Method and device for starting motors in weak grids |
| 05/18/2012 | WO2012063541A1 Power supply status diagnostic method and device |
| 05/18/2012 | WO2012063325A1 Current control method and controller for motor |
| 05/18/2012 | WO2012063297A1 Rotation angle calculation apparatus and rotation angle calculation method |
| 05/18/2012 | WO2012062376A1 A rotating electrical machine and corresponding method |
| 05/17/2012 | US20120119691 System for a Linear Drive |
| 05/17/2012 | US20120119573 Ultra High Efficiency Transmission, with Grid Tied Energy Storage Capability, for a Wind Turbine or a Fuel Cell or Battery Powered Electric Vehicle |
| 05/16/2012 | EP2453571A1 Converter and method for driving an electric AC machine |
| 05/16/2012 | EP2452428A1 Control system for rotary machine having instrumented rolling |
| 05/16/2012 | EP2452424A1 Method and device for controlling inductive loads |
| 05/16/2012 | DE112010001465T5 Wechselstrommotor-Steuervorrichtung und Wechselstrommotor-Treibersystem AC motor controller and AC motor drive system |
| 05/16/2012 | DE102010043973A1 Method for generating noise by electromotor of motor car such as electric car, involves actuating electromotor with drive signal such that modulation in electromotor oscillations is produced to generate noise |
| 05/16/2012 | CN102460953A 具有匹配输出电压的供电 The output voltage of the power supply has to match |
| 05/16/2012 | CN102460931A 负载驱动系统的控制装置 Load control means of the drive system |
| 05/16/2012 | CN102457225A 制冷装置以及永久磁铁同步电机的控制装置 Refrigerating apparatus control device and a permanent magnet synchronous motor |
| 05/16/2012 | CN102452374A Drive arrangement |
| 05/16/2012 | CN101795007B Stator power control method of wind-power double-feed motor based on synchronization model |
| 05/16/2012 | CN101295937B Inverter apparatus and a semiconductor device used for the same |
| 05/16/2012 | CN101237194B Three-phase electric power converter, and control device and control method of three-phase alternating current motor |
| 05/16/2012 | CN101223681B Leakage detector of vehicle-mounted power supply system and method |
| 05/15/2012 | US8179084 Variable-speed-drive system for a grid blower |