| 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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| 10/22/2008 | CN101291133A Motor and control circuit thereof |
| 10/22/2008 | CN101290524A Fan circuit |
| 10/22/2008 | CN100428624C Electricity saving device of full automatic three-phase motor |
| 10/22/2008 | CN100428623C Power circuit control system of magnetic floation switch magnetic-resistance motor suspensition winding |
| 10/21/2008 | US7439703 Controller for synchronous machine |
| 10/21/2008 | US7439702 Application of a switched reluctance motion control system in a chiller system |
| 10/21/2008 | US7439692 Linear compressor and apparatus to control the same |
| 10/16/2008 | WO2008123400A1 Magnetic pole detection method and drive guide system |
| 10/15/2008 | EP1981165A2 Method for controlling a reluctance motor |
| 10/15/2008 | EP1981164A2 Motor control device |
| 10/15/2008 | CN101286674A Zero distributed motor |
| 10/15/2008 | CN100426637C Direct-current brushless motor |
| 10/09/2008 | WO2008005363A3 Parking control technique for permanent magnet motor drives with sinusoidal bemf |
| 10/09/2008 | US20080246429 Controller of electric motor |
| 10/09/2008 | US20080246426 Control system for multiphase rotary machines |
| 10/08/2008 | EP1978633A2 Method of setting the origin of a linear motor |
| 10/08/2008 | EP1977501A2 Virtual moving air gap for an axial flux permanent magnet motor with dual stators |
| 10/08/2008 | EP1642380B1 Method for controlling an electric motor comprising several oscillating motor components |
| 10/08/2008 | CN201130920Y Bicyclo inversion control medium voltage motor chopped wave type digital speed control system |
| 10/08/2008 | CN201130578Y Composite electrode for liquid resistance |
| 10/08/2008 | CN101283504A Electronic intermediate DC circuit |
| 10/08/2008 | CN100424991C Drive circuit for rotating resonance type motor |
| 10/08/2008 | CN100424248C Energy saving protector for idling motor of industrial sewing machine |
| 10/07/2008 | US7432622 Method for the wireless and contactless transport of energy and data, and corresponding device |
| 10/02/2008 | WO2008116995A2 Method for operating a variable reluctance motor |
| 10/02/2008 | WO2008008486A3 Signal conditioning apparatus and method for determination of permanent magnet motor rotor position |
| 10/02/2008 | US20080238350 Single phase motor driving device |
| 10/01/2008 | EP1974461A1 Apparatus and method for controlling hybrid motor |
| 10/01/2008 | EP1723026B1 Electric steering and driving system for a wheel-steering vehicle |
| 10/01/2008 | CN201127014Y Cutter hand operated tool embedded with constant speed machine |
| 09/30/2008 | US7429840 Control of an electrical reluctance machine |
| 09/30/2008 | US7429839 Linear compressor and control method thereof |
| 09/25/2008 | US20080231216 Method for control of a reluctance motor |
| 09/25/2008 | DE102007013724A1 Verfahren zur Steuerung eines Reluktanzmotors Method for controlling a reluctance motor |
| 09/24/2008 | EP1973225A1 Magnetic brake for powered window covering |
| 09/24/2008 | CN201122929Y Intelligent static-state soft phase advancer |
| 09/24/2008 | CN201122928Y Star-delta automatic switching energy-saving distributor of oil well motor |
| 09/24/2008 | CN101273520A AC synchronous motor initial magnetic pole position estimation device and its method |
| 09/24/2008 | CN101272124A Timing method and device for AC asynchronous motor |
| 09/23/2008 | US7428439 Wireless foot control system with optical transmitter and transceiver |
| 09/23/2008 | US7427842 Series motor and method of controlling the same |
| 09/17/2008 | EP1969712A1 Method and circuit for regulating the speed of a commutator series-wound motor |
| 09/17/2008 | CN201118516Y Remote speed adjustable control circuit |
| 09/17/2008 | CN201118515Y Multi-shift control adjustable three phase asynchronous electromotor for oil drawer |
| 09/17/2008 | CN201118514Y Economic operation controller for electromotor |
| 09/17/2008 | CN201118513Y Efficiency optimization control system for three-phase inductance electromotor |
| 09/17/2008 | CN201118509Y Energy-saving consumption reduction dual-speed belt transport machine |
| 09/17/2008 | CN201118434Y Dual PWM mixed cutting wave control circuit |
| 09/17/2008 | CN101267185A Serial excitation electromotor control device and its rotation speed control method |
| 09/17/2008 | CN101267183A Linear induction motor drive system |
| 09/16/2008 | US7425783 Linear motor |
| 09/11/2008 | DE102007011146A1 Three phase current drive, particularly asynchronous motor or synchronous motor, has winding system, which has three stator coils connected with neutral point and three connecting terminals for connecting winding system with frequency |
| 09/10/2008 | EP1966883A1 An electric motor |
| 09/10/2008 | EP1965725A1 Adaptive drive system using current values for a personal care appliance |
| 09/10/2008 | CN201113902Y Device for wwitching alternating-current wire winding type asynchronous motor speed governing mode |
| 09/10/2008 | CN201113901Y Asynchronous motor dedicated automatic electricity saver circuit |
| 09/10/2008 | CN201113900Y Circuit for enhancing electric motor power factor |
| 09/10/2008 | CN201113899Y Constant-current energy-saving phase advancer |
| 09/10/2008 | CN201113898Y Electric motor intelligent electricity saver |
| 09/10/2008 | CN201113897Y Induction machine control device |
| 09/10/2008 | CN201113895Y Oil pumping machine double-power automatic switchover energy-saving electrical distribution box |
| 09/10/2008 | CN100417813C Linear compressor and control method thereof |
| 09/09/2008 | US7423406 Power control of an induction machine |
| 09/04/2008 | US20080211448 Synchronous machines |
| 09/04/2008 | US20080211447 Motion Control Using Electromagnetic Forces |
| 09/04/2008 | US20080211437 Power supply system for driving electric rotating machine |
| 09/04/2008 | DE10027586B4 Steuervorrichtung für gepulste Erregung Control apparatus for pulsed excitation |
| 09/03/2008 | EP1965490A2 Apparatus and method for driving synchronous motor |
| 09/03/2008 | CN201111325Y Control circuit used for electric hammer motor |
| 09/03/2008 | CN101257278A Automatic gear shifting system of paper chipper |
| 09/03/2008 | CN100417010C Motor control apparatus |
| 09/03/2008 | CN100417004C Motor controlling equipment and washer and dryer using the same |
| 09/03/2008 | CN100417001C Equipment and method for controlling rotating speed of synchronous magnetic motor |
| 09/02/2008 | CA2555434C Comminutng apparatus with three-phase synchronous motor and integrated epicyclic gear stage |
| 08/28/2008 | US20080203949 Controlling torsional shaft oscillation |
| 08/27/2008 | EP1961109A2 Control and protection methodologies for a motor control module |
| 08/21/2008 | US20080197816 Synchronous rectification device and synchronous electric machine implementing the device |
| 08/21/2008 | US20080197793 Control of an electrical machine |
| 08/20/2008 | EP1959560A2 Control of an electrical machine |
| 08/20/2008 | EP1959559A2 Phase detection method, phase detecting apparatus, synchronous-motor control method, and synchronous motor controller |
| 08/20/2008 | EP1959558A2 System and method for efficient wide dynamic range coil drive |
| 08/20/2008 | EP1959540A2 Reluctance motor |
| 08/20/2008 | CN101247105A Capacity-expanding main circuit of railway train AC traction electric motor |
| 08/20/2008 | CN101247099A Control of an electrical machine |
| 08/14/2008 | WO2008096479A1 Linear motor, linear motor type gripper, and actuator |
| 08/14/2008 | WO2008096090A1 Asynchronous motor control |
| 08/14/2008 | US20080191658 Method for Feeding an Operating Motor of a Rolling Shutter and a Device for a Driven Rolling Shutter |
| 08/14/2008 | US20080191652 Heat Treatment of Metal Work Pieces |
| 08/14/2008 | US20080190680 Vehicle Drive System And Electronic Circuit Device Used For The Same |
| 08/14/2008 | DE112006002603T5 Selektiv konfigurierbarer Elektromotor Selectively configurable electric motor |
| 08/13/2008 | EP1395763B1 Variable electromagnetic damping apparatus |
| 08/13/2008 | CN100411284C Space vector PWM modulator for permanent magnet motor drive |
| 08/12/2008 | US7412339 Method and apparatus for identifying an operational phase of a motor phase winding and controlling energization of the phase winding |
| 08/07/2008 | WO2008093872A1 Switched reluctance motor control apparatus |
| 08/07/2008 | DE112006002501T5 Ermittlungsvorrichtung und -verfahren für Anfangspolposition für einen synchronen Wechselstrommotor Detection apparatus and method for Anfangspolposition for a synchronous AC motor |
| 08/07/2008 | DE102007005449A1 Stator winding current switching device for e.g. generator-electric motor-combination, has coil switching units, where time duration of additional impulse-like voltages is smaller than time duration of impulse-like voltages of working cycle |
| 08/06/2008 | EP1952527A2 Method and apparatus for quiet fan speed control |
| 08/06/2008 | EP1952526A2 Driving an inductive load |
| 08/06/2008 | CN101238277A Torque ripple suppressor of engine |
| 08/06/2008 | CN101237957A Method and device for the technique of cold microforging any freely formed 3D surfaces |