| Patents for H02P 25 - Arrangements or methods for the control of ac-motors characterised by the kind of ac-motor or by structural details (7,591) |
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| 05/21/2009 | US20090128076 Rotary electric system with neutral-point powering system |
| 05/20/2009 | DE102008043296A1 Motorsteuerungsgerät Engine control device |
| 05/20/2009 | DE102007054228A1 Stator, especially of a twin-pole separately-excited synchronous machine, has structured coil systems to continue operating if a coil system fails |
| 05/20/2009 | CN101438490A Operation control device and method of compressor |
| 05/20/2009 | CN101436842A Motor drive circuit |
| 05/20/2009 | CN101436841A Motor |
| 05/19/2009 | US7535188 Motor driving apparatus, motor driving method and disk driving apparatus |
| 05/19/2009 | CA2280973C Apparatus for producing linear motion |
| 05/13/2009 | CN201238282Y Motor control detection circuit for forced-ventilation type gas water heater |
| 05/12/2009 | US7531975 Adjustable frequency PWM driver |
| 05/07/2009 | WO2009057873A2 Linear motor and reciprocating compressor employing the same |
| 05/07/2009 | WO2009057605A1 Actuator control method, actuator control system, and object detection system |
| 05/07/2009 | WO2009057442A1 Linear motor, and linear motor system |
| 05/07/2009 | WO2009026690A3 Multistage variable reluctance motor/generator |
| 05/06/2009 | EP2056445A2 Electric motor control with buck boost convertor |
| 05/06/2009 | CN201234238Y Power-saving device for asynchronous motor |
| 05/06/2009 | CN201234233Y Driving circuit for large power rear earth square wave motor |
| 05/06/2009 | CN201234175Y Wound type asynchronous motor with low speed regulating loss and speed regulating device |
| 05/06/2009 | CN201234119Y Integrated motor synthetic monitoring apparatus |
| 05/06/2009 | CN101427457A Driving control apparatus and method for linear compressor |
| 05/06/2009 | CN101425776A Fault tolerant control method for double salient pole permanent magnet motor |
| 05/05/2009 | US7528583 Brushless generator |
| 04/30/2009 | WO2009054640A2 Reciprocating compressor |
| 04/30/2009 | WO2009001285A3 System for controlling the steady-state rotation of a synchronous electric motor |
| 04/30/2009 | DE102008042589A1 Gangschaltungsvorrichtung und Gangschaltungsverfahren Gear shifting device and gear shift method |
| 04/29/2009 | EP2053736A2 Control method for positive yarn feeders |
| 04/29/2009 | EP2051837A2 Method for determining the dirtiness of an electrically driven cutting tool, and hair cutting device |
| 04/23/2009 | WO2009050664A2 Method for analysing the operation of an electromechanical actuator for the powered manoeuvre of a screen, and actuator for implementing same |
| 04/23/2009 | WO2009050400A2 Method for controlling the power supply of an electric machine with variable reluctance |
| 04/23/2009 | DE102007046513A1 Elektrische Antriebsmaschine Electric drive unit |
| 04/23/2009 | DE10105086B4 Leistungsmodul Power module |
| 04/22/2009 | EP2050095A2 On-chip compensation for a fully differential voice coil motor control |
| 04/22/2009 | CN101414803A Method and apparatus for recognizing multi-speed motor gear based on voltage mutual inductance technology |
| 04/22/2009 | CN100479985C XYZ-axes table |
| 04/21/2009 | US7521889 Method of braking induction motor and control apparatus |
| 04/21/2009 | US7521888 Electric motor controller for a domestic appliance |
| 04/21/2009 | US7521883 Motor current shaping |
| 04/16/2009 | WO2009047741A2 Commutation current generator for magnetic motors |
| 04/16/2009 | US20090097987 Driving control apparatus and method for linear compressor |
| 04/16/2009 | DE102007048161A1 Servo controller for linear motor, has compensator connected to feeder line between power device and position return device and performing signal correction of position return device |
| 04/15/2009 | CN201222718Y Intelligent double-control chopping type medium-pressure motor speed-regulating device |
| 04/15/2009 | CN101411053A AC motor driving apparatus and control method |
| 04/14/2009 | US7518331 AC rotating electric machine control method and electrical power train system |
| 04/14/2009 | US7518324 Universal motor speed controller |
| 04/09/2009 | WO2009043279A1 Motor rotor position sensor and method for measuring position of motor rotor |
| 04/09/2009 | US20090091866 Shift switching device and shift switching method |
| 04/09/2009 | DE102008042591A1 Motorsteuergerät Engine control unit |
| 04/08/2009 | EP2044684A2 Variable voltage supply system |
| 04/08/2009 | CN100477448C Inner feedback brushless alternating current machine |
| 04/02/2009 | WO2009041316A1 Linear motor system |
| 04/01/2009 | CN101401296A Apparatus and method for controlling hybrid motor |
| 04/01/2009 | CN101399518A Constant-current energy-saving phase advancer |
| 04/01/2009 | CN100473929C Air-separation and metal-production apparatus and method for starting the same |
| 03/31/2009 | US7511444 Motor control apparatus for controlling motor to drive output shaft with positioning accuracy unaffected by backlash in rotation transmission system |
| 03/31/2009 | US7511439 Method for starting a sensorless, electronically commutatable direct current motor |
| 03/26/2009 | US20090079368 Electronic Direct Current Intermediate Circuit |
| 03/25/2009 | EP2040372A1 Adaptive drive system using current values for a personal care appliance |
| 03/25/2009 | EP1965725B1 Adaptive drive system using current values for a personal care appliance |
| 03/25/2009 | CN101394149A Driving system for dual-phase permanent magnet asynchronous motor |
| 03/25/2009 | CN101394148A Driving system for dual-phase asynchronous motor |
| 03/25/2009 | CN100472934C Rotor position detection of an electrical machine |
| 03/25/2009 | CN100472915C Single phase induction motor with partially shared windings |
| 03/19/2009 | WO2009007671A3 A synchronous electrical machine |
| 03/18/2009 | EP2036680A2 Hand-held machine tool with a percussion mechanism having a pneumatic spring, a linear motor and control method |
| 03/18/2009 | EP2036191A2 Method, system, amd apparatus for controlling an electric motor |
| 03/18/2009 | CN201210666Y Intelligent dual feeding synchronous phase device |
| 03/18/2009 | CN101390277A Method for the predictive closed-loop control of a linear drive or of a linear compressor and linear drive or linear compressor subject to predictive closed-loop control |
| 03/18/2009 | CN101388642A Power-on buffering and dynamic urgent braking apparatus for AC servo system |
| 03/18/2009 | CN101388640A Pressure and speed regulating system for semi-digital AC stator |
| 03/18/2009 | CN101388575A Wound type asynchronous motor with low speed regulating loss and speed regulating device |
| 03/18/2009 | CN100471033C Variable speed motor |
| 03/17/2009 | US7505545 Method for recognizing step movement sequence of control rod drive mechanism of nuclear reactor |
| 03/12/2009 | WO2009030542A2 Electrical machine |
| 03/12/2009 | DE102008034667A1 Effizienter Arbeitspunkt für ein Doppelseitiges Wechselrichtersystem Efficient operating point for a double-sided inverter system |
| 03/12/2009 | DE102007025985B3 Steuereinrichtung für ein Elektrohandwerkzeug A control device for an electric hand tool |
| 03/11/2009 | EP2034604A1 Ac rotating machine controller |
| 03/11/2009 | EP1293033B1 Control and regulation of electric motors |
| 03/11/2009 | CN201207631Y Intelligence controller for AC asynchronous motor |
| 03/11/2009 | CN201207630Y Input and output torque balancing controller |
| 03/11/2009 | CN100468948C A method and system for determining rotor position in switch magnetoresistance machinery |
| 03/05/2009 | WO2009026690A2 Multistage variable reluctance motor/generator |
| 03/05/2009 | WO2009005667A3 Conduction angle control of a switched reluctance generator |
| 03/05/2009 | US20090058330 Driving a multi-phased motor |
| 03/04/2009 | EP2031751A2 Pumping driver for linear motor with constant battery power/current |
| 03/04/2009 | CN201202392Y Motor control device |
| 03/04/2009 | CN101378246A Motor control device |
| 03/04/2009 | CN101378242A Shunt chopper for side control of high-voltage motor speed-governing rotor |
| 03/03/2009 | US7499254 Low power solenoid driver circuit |
| 02/27/2009 | CA2598972A1 Starter/generator with permanent magnet generator position indicator |
| 02/26/2009 | DE102008034671A1 Double-ended inverter system controlling method for e.g. hybrid vehicle has a high voltage inverter with transistor switch leg that is clamped to positive high voltage rail if phase current is less than desired high voltage inverter current |
| 02/26/2009 | DE102008034670A1 Double-ended inverter drive system for e.g. a two-wheel drive sedan has two inverters that drive the four-phase motor, where each is coupled to its respective energy source and respective set of windings of the motor |
| 02/25/2009 | CN100464495C Three-switch type power converter |
| 02/19/2009 | US20090045768 Single switch controlled switched reluctance machine |
| 02/18/2009 | CN101369799A Motor controller |
| 02/18/2009 | CN100463352C Motor and drive control system thereof |
| 02/17/2009 | US7492117 Electromagnetic variable degrees of freedom actuator systems and methods |
| 02/12/2009 | WO2009019344A2 Supply device for a motor vehicle alternator, and alternator employing such a device |
| 02/12/2009 | US20090039824 High power-density static-field ac conduction motor |
| 02/12/2009 | US20090039816 Assembly Comprising a Three-Phase Machine and a Frequency Converter |
| 02/12/2009 | US20090039807 Motor controller |