| 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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| 03/26/2008 | CN201041996Y Bridge crane electromotor controller |
| 03/26/2008 | CN101151796A High-phase order generator |
| 03/26/2008 | CN101150283A Method and circuit for dual PWM mixed cut wave control switch part |
| 03/26/2008 | CN100377216C Sensor for magnetic disc driving advice based on rotary vibrating speed |
| 03/25/2008 | US7348754 Motion control using electromagnetic forces |
| 03/19/2008 | EP1900091A1 Electric motor |
| 03/19/2008 | EP1532724A4 Pmbdcm and two-phase srm motor |
| 03/19/2008 | CN201039076Y Serial speed adjusting device for simulator control unit |
| 03/19/2008 | CN201039073Y Electronic adjuster for power consumption and loadless low-rotation speed car generator |
| 03/19/2008 | CN101145756A A vertical installation line motor cut-off braking protection device and method |
| 03/19/2008 | CN100376078C High performance variable frequency speed regulation electric machine |
| 03/13/2008 | US20080061721 Method and apparatus for safe torque limiting |
| 03/13/2008 | DE112006000930T5 Steuerschaltung mit reduzierter Last für einen Bypass-Schalter Control circuit with reduced load for a bypass switch |
| 03/12/2008 | CN100375384C Control of an electrical relunctance machine |
| 03/06/2008 | WO2008026642A1 Power supply device for permanent magnet field type linear motor and pwm inverter for permanent magnet field type motor |
| 03/06/2008 | WO2008026639A1 Method for controlling reluctance motor |
| 03/06/2008 | WO2008026541A1 Reluctance motor and its control method |
| 03/06/2008 | DE102006040738A1 Five phase electrical machine e.g. asynchronous machine, controlling method for motor vehicle, involves controlling supply circuit using control circuit, and operating electrical machine with star point connection e.g. star point cable |
| 03/05/2008 | EP1894293A1 Method and apparatus for quiet variable motor speed control |
| 03/05/2008 | EP1894292A1 Sensorless measurement of the rotation frequency of a rotor of an asynchronous machine |
| 02/28/2008 | WO2008023688A1 Ac load driver and switching control method |
| 02/28/2008 | DE10157257B4 Toroidal gewickelter Asynchronmotorgenerator mit wählbarer Polzahl Toroidal wound Asynchronmotorgenerator with selectable number of poles |
| 02/27/2008 | EP1891729A1 Method for position and/or speed control of a linear drive |
| 02/27/2008 | CN201029224Y Full digitized machine set cascade speed control device |
| 02/27/2008 | CN101133547A Control device |
| 02/27/2008 | CN100372227C Electronic speed regulation method for mouse cage asynchronous motor |
| 02/26/2008 | US7335001 Apparatus and method for controlling operation of a reciprocating compressor |
| 02/21/2008 | WO2008019754A2 Method for determining the dirtiness of an electrically driven cutting tool, and hair cutting device |
| 02/21/2008 | US20080042606 Feedback control method and apparatus for electric motor |
| 02/20/2008 | EP1889356A2 Method for controlling a reluctance motor |
| 02/20/2008 | CN101127499A An electromotor precursor circuit |
| 02/19/2008 | US7332885 Ride-through method and system for HVAC&R chillers |
| 02/14/2008 | US20080036404 Elecrtric motor controller for a domestic appliance |
| 02/14/2008 | DE102007000404A1 Steuervorrichtung für Bereichschaltmechanismus A control device for the range shift mechanism |
| 02/13/2008 | EP1886394A2 Apparatus and method for increasing efficiency of electric motors |
| 02/13/2008 | CN100369376C Three-phase asynchronous motor actiyator and its speed regulation method, air conditioner using the same |
| 02/07/2008 | US20080030082 Reciprocating motor |
| 02/06/2008 | CN201018449Y Electric motor regulation control circuit |
| 02/06/2008 | CN201018448Y Three-phase power-saving device for sewing machine |
| 02/06/2008 | CN100367662C Two-purpose miniature submersible pump electric motor of single or three phases |
| 02/06/2008 | CN100367657C System and method for determining the resonant frequency of an oscillating appliance, in particular a power toothbrush |
| 02/05/2008 | US7327105 Mesh connected electrical rotating machine with span changing |
| 01/31/2008 | US20080024081 Controlling device for range switch mechanism |
| 01/31/2008 | CA2813526A1 Variable-flux motor drive system |
| 01/30/2008 | EP1882302A1 Variable speed drive for a chiller system with a switched reluctance motor |
| 01/29/2008 | US7323834 Synchronous motor control system |
| 01/24/2008 | WO2008010213A2 Variable voltage supply system |
| 01/24/2008 | US20080019678 Coil Load Driving Circuit and Optical Disc Device |
| 01/24/2008 | CA2657661A1 Variable voltage supply system |
| 01/17/2008 | WO2005100769A3 Method and system for controlling a free-piston energy converter |
| 01/16/2008 | EP1774644B1 Drive circuit for a synchronous electric motor |
| 01/16/2008 | CN100362737C Rotor angle estimation for permanent magnet synchronous motor drive |
| 01/15/2008 | US7318580 Vehicle for materials handling and other industrial uses |
| 01/10/2008 | US20080007190 Motor control apparatus and on-vehicle motor drive system |
| 01/09/2008 | EP1875985A1 Synchronous motor for driving a machining tool |
| 01/09/2008 | CN101103520A Transistor matrix switched reluctance variable speed motor drive |
| 01/09/2008 | CN101103519A Method for regulating the current supply of a coil of a reluctance motor and electric circuit arrangement for said method |
| 01/09/2008 | CN101103518A Method for controlling a wound rotor synchronous motor |
| 01/03/2008 | DE10197212B4 Motorsteuerungssystem An engine control system |
| 01/02/2008 | EP1873902A2 Coarse voltage regulation of a permanent magnet generator |
| 01/02/2008 | EP1872470A1 Heat treatment of metal work pieces |
| 01/02/2008 | EP1282938B1 Motor energisation control circuit |
| 01/02/2008 | CN100359796C Control system of electric machine for dynamic changing wavecurve of electric machine energized current |
| 01/01/2008 | US7315098 Linear oscillator and electrically driven toothbrush |
| 12/27/2007 | US20070296363 Rectifier and System for Controlling the Speed of an Electric Motor |
| 12/27/2007 | US20070296362 Prevention of concurrent pwm or psm commutations of power signals driving a voice coil motor (vcm) to reduce s/n ratio degradation of low level signal lines of a r/w head |
| 12/27/2007 | US20070296358 Power Output Apparatus and Vehicle Equipped Therewith |
| 12/27/2007 | DE102006028937A1 Verfahren zum Betreiben einer Pumpe mit einer elektronisch kommutierenden elektrischen Maschine A method for operating a pump with an electronically commutated electrical machine |
| 12/26/2007 | EP1869754A1 Converting mechanical vibrational energy into electrical energy |
| 12/26/2007 | CN101094990A A linear motor, a linear compressor, a method of controlling a linear compressor, a cooling system, and a linear compressor controlling a system |
| 12/26/2007 | CN101093974A Energy saving control box for pumping unit in oil field, and energy saving control method |
| 12/26/2007 | CN100358236C Digital intelligent control system of adopting low voltage converter to realize medium-voltage motor speed regulation |
| 12/20/2007 | US20070290638 Wireless encoder |
| 12/20/2007 | US20070289476 Contactless Energy Supply for Moving Consumers |
| 12/19/2007 | CN200994115Y Motor energy-saving control device |
| 12/19/2007 | CN101090252A Electric saving method for AC motor and corresponding AC motor electric saver |
| 12/19/2007 | CN100356680C Motor driver and its driving control system |
| 12/18/2007 | US7309969 Apparatus and method for starting an electric motor |
| 12/13/2007 | WO2007142730A1 2-phase switched reluctance device and associated control topologies |
| 12/13/2007 | CA2652961A1 2-phase switched reluctance device and associated control topologies |
| 12/12/2007 | EP1864370A1 Linear motor and method for operation of a linear motor |
| 12/12/2007 | EP1602170A4 Excitation circuit and control method for flux switching motor |
| 12/12/2007 | EP1516409B1 High phase order elctrical rotating machine with distributed windings |
| 12/11/2007 | US7307397 Driving unit |
| 12/11/2007 | CA2507407C Linear motor |
| 12/06/2007 | US20070279614 Linear Motor and Exposure Apparatus Having the Same |
| 12/06/2007 | US20070278983 Control of Electrical Machines |
| 12/05/2007 | EP1863164A1 Enhancement of the efficiency of energy recovery during spindle motor step-up phase for parking the R/W head of a disk storage device upon external supply failure |
| 12/05/2007 | CN200987142Y Gyro machine biphase permanent-magnetic electric machine controller |
| 12/05/2007 | CN200987129Y High-reliability multi-power energy-saving electric machine for oilfield |
| 12/05/2007 | CN101083421A Multi-rated brushless D. C. motor of dual-voltage operation mode |
| 11/29/2007 | US20070273323 Drive Circuit for a Synchronous Electric Motor |
| 11/29/2007 | US20070273322 Method, apparatus, and system for drive control, power conversion, and start-up control in an srm or pmbdcm drive system |
| 11/29/2007 | US20070273311 Electric Household Food Preparation Appliance Which Is Designed To Be On Standby And Reactive |
| 11/29/2007 | US20070272904 Vehicle for materials handling and other insdustrial uses |
| 11/28/2007 | EP1860768A2 Power supply device for a rotary current asynchronous motor of a drive with quadratic torque curve |
| 11/28/2007 | EP1860767A2 Semiconductor device for motor driving and motor having the same, motor driving apparatus and air conditioner |
| 11/28/2007 | EP1860757A1 Electric machine with part winding circuit |
| 11/28/2007 | EP1860017A2 Motor for electric power steering apparatus |
| 11/28/2007 | CN200983570Y Magnetic gearing of permanent magnet brushless electromotor |