| Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487) |
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| 01/31/2012 | US8106621 Control device for induction motor |
| 01/31/2012 | US8106619 Position sensorless controller for permanent magnet motor |
| 01/31/2012 | US8106615 Pump jack pump-off control method and pump jack control apparatus |
| 01/26/2012 | WO2012010087A1 Current-control method for use in high voltage inverter |
| 01/26/2012 | US20120019174 Drive System, Method for Operating a Drive System, and Use |
| 01/24/2012 | US8102140 Method and apparatus for estimating induction motor electrical parameters |
| 01/19/2012 | WO2012007396A2 Method and device for determining a momentary torque of an electronically switched electric machine and for regulating the average torque |
| 01/19/2012 | DE102011106925A1 Steuervorrichtung eines sensorlosen Asynchronmotors mit einer Funktion zur Korrektur einer Schlupfrate des Motors Control device of a sensorless induction motor with a function for correcting a slip rate of the engine |
| 01/18/2012 | CN202121502U Servo driver |
| 01/18/2012 | CN102324889A Speed regulation circuit for alternating current motor |
| 01/12/2012 | US20120007538 Robot |
| 01/12/2012 | DE102011107587A1 Parametriergerät für einen Rohrmotor Parametrization for a tubular motor |
| 01/11/2012 | EP2404376A1 Method and device for the angle sensor-free position detection of the rotor shaft of a permanently excited synchronous machine based on current signals and voltage signals |
| 01/11/2012 | CN102315818A Inverter for electric vehicle |
| 01/11/2012 | CN102315817A Motor control system for detecting fault of current sensor and control method |
| 01/11/2012 | CN101168352B Multiple motor wheel edge separated driving electric vehicle propulsion control system and method |
| 01/11/2012 | CN101101039B Resistive torsional mode damping system and method |
| 01/05/2012 | US20120001586 Power Conversion Device |
| 01/05/2012 | US20120001577 Torque motor driving device for wire cut electrical discharge machines |
| 01/05/2012 | DE102008004039B4 Halbleiterschonende Ansteuerung eines Antriebssystems mit einem Pulsstromrichter und einem nachgeschalteten Asynchronmotor Semiconductor Careful control of a drive system with a pulse converter and a downstream asynchronous motor |
| 01/04/2012 | EP2216221B1 Electromechanical step-less hybrid numerically controlled variator |
| 01/04/2012 | CN202103622U Energy-saving system of oil pumping machine |
| 12/29/2011 | WO2011160880A1 Method for determining the torque of an electric motor |
| 12/28/2011 | EP2400658A2 Method for drive-controlling electric machinery |
| 12/28/2011 | CN102301582A 阀控制装置 Valve control means |
| 12/27/2011 | US8084984 System and method for monitoring and controlling stator winding temperature in a de-energized AC motor |
| 12/22/2011 | US20110309781 Motor Control Device And Motor Drive System |
| 12/22/2011 | CA2802448A1 System and method of speed detection in an ac induction machine |
| 12/21/2011 | EP2050186B1 Drive and method |
| 12/21/2011 | CN102292909A 能量转换器 Energy converters |
| 12/21/2011 | CN101924515B 抽油机悬停调速技术 Hover pumping speed control technology |
| 12/20/2011 | US8080955 Driving method and related driving device for a motor |
| 12/14/2011 | CN1983795B 车辆用操舵装置 Motor vehicle steering system |
| 12/14/2011 | CN101714847B 一种空调室外电机控制方法 An air conditioner outdoor motor control method |
| 12/14/2011 | CN101388641B 运行旋转式电机的方法 Operating the rotary electric machine method |
| 12/07/2011 | EP2392070A2 System and method for determining stator winding resistance in an ac motor using motor drives |
| 12/07/2011 | EP2391483A1 Electric boring tool |
| 12/07/2011 | CN202068374U 智能电机节电器 Intelligent Motor Saver |
| 12/06/2011 | US8069685 Capacity modulation compressor and air conditioning system having the same |
| 12/01/2011 | US20110291599 High-speed self-cascaded electric machine |
| 11/30/2011 | CN202059359U 基于fpga的凸极同步电动机定子磁链观测器 Fpga based salient pole synchronous motor stator flux observer |
| 11/30/2011 | CN101253676B 制动电路和电设备 Brake circuits and electrical equipment |
| 11/24/2011 | WO2010086729A3 System and method for determining stator winding resistance in an ac motor using motor drives |
| 11/24/2011 | US20110285342 Methods and systems for induction motor control |
| 11/24/2011 | US20110285333 Motor drive unit |
| 11/23/2011 | CN202050383U Energy-inhibiting power saver |
| 11/23/2011 | CN1998130B Phase angle control for synchronous machine control |
| 11/23/2011 | CN102248900A Methods and system for motor torque control for vehicles when current sensor is not operating properly |
| 11/17/2011 | US20110279075 Method and module for controling rotation of a motorized spindle |
| 11/17/2011 | DE102010020521A1 Verfahren zum Vorhersagen eines zukünftig von einer elektrischen Maschine darstellbaren Drehmoments Method for predicting a future representable by an electric motor torque |
| 11/16/2011 | EP2387147A2 Motor controlling apparatus and method of the same |
| 11/16/2011 | EP2387146A2 Motor controlling apparatus and controlling method of the same |
| 11/16/2011 | CN202042856U Power line solar electric bird scaring device |
| 11/16/2011 | CN102244493A Stretch motor system possessing Internet control system |
| 11/16/2011 | CN101355339B Motor controller |
| 11/16/2011 | CN101154913B Methods and system for motor drive information capture |
| 11/10/2011 | DE102010020123A1 Converter arrangement for vehicle, has memory arranged at brake resistor and combined with evaluation electronics of converter, and communication channel arranged between evaluation electronics of converter and brake resistor |
| 11/09/2011 | CN202034939U Direct torque control device for novel asynchronous motor based on fuzzy control |
| 11/09/2011 | CN102239631A System and method for monitoring power damping compliance of a power generation unit |
| 11/09/2011 | CN102237845A Method for controlling motor |
| 11/09/2011 | CN102237844A Speed regulating method for air conditioner motor |
| 11/09/2011 | CN101764568B Electro-active movable vehicle, power system and power management method |
| 11/09/2011 | CN101238536B Safety switching unit for controlling a safety device into a safe state |
| 11/08/2011 | US8054033 Brushless, three phase motor drive |
| 11/03/2011 | WO2011135652A1 Motor control apparatus |
| 11/02/2011 | CN102232266A An asynchronous power generator for a wind turbine |
| 11/02/2011 | CN101240699B Oilfield oil pumping machine energy-saving method and startup wheel |
| 10/27/2011 | WO2010052137A3 Electric motor |
| 10/27/2011 | US20110260664 Motor controlling apparatus and controlling method of the same |
| 10/20/2011 | US20110254486 Control of a brushless motor |
| 10/20/2011 | US20110254483 Control of a brushless motor |
| 10/19/2011 | CN202012334U Stepless speed regulating AC servo motor driving system |
| 10/19/2011 | CN102223135A Electricity-saving system of oil pumping unit |
| 10/18/2011 | US8040090 Brushless motor controller and brushless motor |
| 10/13/2011 | US20110248663 Control system for ac motor |
| 10/13/2011 | US20110248656 Motor drive device |
| 10/12/2011 | CN102215021A Device and method for measuring electromotive force of fan motor |
| 10/12/2011 | CN101378239B Method and apparatus for controlling rotor position of electric machine |
| 10/06/2011 | WO2011121043A1 Rectifier based torsional mode damping system and method |
| 10/06/2011 | US20110243757 Inverter control device for ac motor and electric compressor |
| 10/06/2011 | CA2794820A1 Rectifier based torsional mode damping system and method |
| 10/05/2011 | EP2371055A2 Method and control device for controlling an electric motor |
| 10/05/2011 | CN202004719U Direct torque control system based on DSP (Digital Signal Processor) speed-free sensor |
| 10/04/2011 | US8030861 Method for controlling a deceleration process of a DC motor and controller |
| 09/29/2011 | WO2011117248A2 Avoidance of torsional excitations in converter-controlled compressor runs |
| 09/29/2011 | WO2011117183A2 Avoidance of torsional excitations in converter-controlled compressor runs |
| 09/29/2011 | WO2011117139A2 Method and device for determining output torque of an electric drive |
| 09/29/2011 | US20110234147 Controller for spindle with encoder |
| 09/29/2011 | US20110234146 Controller of spindle provided with encoder |
| 09/29/2011 | US20110234144 Motor control device and electrical equipment with motor controlled thereby |
| 09/29/2011 | US20110234132 Torque based electronic pulse width modulation control system for a switched reluctance motor |
| 09/29/2011 | DE102010012665A1 Method for controlling down speed of reluctance motor, involves driving rotor of motor in order to rotate to phase of rotor by counting down phase synchronization time for altering phase of rotor |
| 09/29/2011 | CA2793963A1 Avoidance of torsional excitations in converter-controlled compressor runs |
| 09/28/2011 | EP2368318A1 System for controlling an actuator with a direct current motor and straight recesses |
| 09/28/2011 | EP1992065B1 Device for simulating the symmetrical and asymmetrical impedance of an asynchronous machine |
| 09/28/2011 | EP1695157B1 Electric motor controller for a domestic appliance |
| 09/28/2011 | CN102204080A Method and apparatus for limiting torque in an electric drive motor |
| 09/28/2011 | CN101651442B Method and system for correcting electrical angle of motor rotor |
| 09/28/2011 | CN101222205B Motor control method and apparatus |
| 09/22/2011 | US20110227520 Brushless motor controller and method for controlling brushless motor |