| 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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| 07/25/2007 | CN101005264A Intelligent fan rotating speed control method |
| 07/24/2007 | US7248016 Motor controller and steering device |
| 07/19/2007 | WO2007081153A1 Apparatus and method for controlling hybrid motor |
| 07/19/2007 | WO2007080022A1 Method and circuit for regulating the speed of a commutator series-wound motor |
| 07/19/2007 | DE102006002295A1 Programmable manual hair dryer has microprocessor to determine constant functional conditions corresponding to electrical and mechanical discrepancies involved in signaling information on display, when dryer is turned ON |
| 07/18/2007 | EP1808958A2 Drive circuits |
| 07/18/2007 | CN1327608C Discontinuous power supply full-automatic controlling method and apparatus for motor of beam-pumping unit |
| 07/18/2007 | CN101001065A Driving plan of parallel multi-section contactless switch speed regulating machine |
| 07/17/2007 | US7245092 Alignment stage apparatus, exposure apparatus, and semiconductor device manufacturing method |
| 07/17/2007 | CA2271792C Voltage clamp snubbers for three level converter |
| 07/12/2007 | US20070160354 Motor control circuit |
| 07/12/2007 | US20070159128 Linear motor, a linear compressor, a method of controlling a linear compressor, a cooling system, and a linear compressor controlling a system |
| 07/12/2007 | US20070159124 Electric Motor with Adjustable Timing |
| 07/12/2007 | US20070159123 Single-sensor based commutation of multi-phase motor |
| 07/12/2007 | US20070159122 Universal motor speed controller |
| 07/12/2007 | DE102005063069A1 Air purification device for use with e.g. carbon filter, has high voltage production device electrically connected in parallel to input of fan motor, where number of revolutions of fan motor is adjustable using changeable input voltage |
| 07/11/2007 | EP1806836A1 Universal motor speed controller |
| 07/11/2007 | CN2922274Y Electric motor intelligent non-contact transformation control device |
| 07/11/2007 | CN1326316C Electronically-commutated motor |
| 07/11/2007 | CN1326315C Output torque depulsation control method for switch reluctance servo motor |
| 07/10/2007 | US7243058 Method and circuit for operating a voice coil actuator of a mass data storage device |
| 07/10/2007 | US7242857 Motor control circuit |
| 07/05/2007 | WO2007074081A1 An electric motor |
| 07/05/2007 | US20070152512 Linear motor controller improvements |
| 07/05/2007 | DE102005062864A1 Verfahren und Schaltungsanordnung zur Drehzahlregelung eines Kommutator-Reihenschlussmotors Method and circuit for speed control of a commutator series-wound motor |
| 07/04/2007 | EP1804373A1 Rotary electric machine system |
| 07/04/2007 | CN2919686Y Intelligent energy-saving controller of three-phase asynchronous motor |
| 07/04/2007 | CN1993878A Drive circuit for a synchronous electric motor |
| 07/04/2007 | CN1992503A Apparatus and method for varying speed of hybrid induction motor |
| 07/04/2007 | CN1324804C 马达装置及其控制方法 Motor apparatus and control method |
| 07/04/2007 | CN1323787C Electrical devices including a switched reluctance motor |
| 06/28/2007 | WO2007072365A1 Adaptive drive system using current values for a personal care appliance |
| 06/28/2007 | US20070145928 Electronic commutator circuits |
| 06/27/2007 | CN1989691A Device for driving an electromagnet, particularly for operating pumps |
| 06/27/2007 | CN1989690A Method and apparatus for instability detection and correction in a domestic combined heat and power unit |
| 06/27/2007 | CN1988367A Motor controlling circuit and method |
| 06/26/2007 | US7235936 Linear vibration motor |
| 06/21/2007 | DE102005059477A1 Starting commutation determining method for e.g. synchronous and reluctance servo motor, involves determining angle corresponding to maximum of rotor torsion, and selecting determined angle as starting commutation angle |
| 06/20/2007 | CN1983796A Electric wind motor and electric dust collector using the same |
| 06/20/2007 | CN1983793A Semiconductor device and motor having the same and motor driver |
| 06/20/2007 | CN1983777A Electric reciprocating moving unit |
| 06/20/2007 | CN1322668C Method and apparatus for maintaining force of a variable reluctance motor |
| 06/19/2007 | US7233873 Rotor position detection in an electrical machine |
| 06/19/2007 | US7233121 Fan speed control circuit |
| 06/14/2007 | DE102005059178A1 Power supply for e.g. power tool, has voltage source for supplying direct voltage to micro controller, and internal port-protection diodes that are used as rectifier elements and are arranged at input and/or output of controller |
| 06/13/2007 | EP1796258A1 Electrical motor and method for its excitation |
| 06/13/2007 | CN2912111Y Automatic controller of keeping stator power factor as one |
| 06/13/2007 | CN1980049A Power circuit control system of magnetic floation switch magnetic-resistance motor suspensition winding |
| 06/13/2007 | CN1980048A Switch magnetic-resistance motor system for driving electric bicycle |
| 06/13/2007 | CN1980047A Control device for driving motor |
| 06/13/2007 | CN1980021A Harmonic-wave inhibiting device of dc. load power-chanaging regulation |
| 06/12/2007 | US7230403 System and method for elimination of DC offset feedback in AC drives |
| 06/12/2007 | US7230358 Electrical resonance circuits for high efficiency direct current motors |
| 06/07/2007 | US20070126386 Method and apparatus for movable element position detection in an electrically commutated machine |
| 06/06/2007 | EP1792770A2 Motor driving device and automobile using the same |
| 06/06/2007 | EP1709727B1 Method for reducing the rotational speed of a drivetrain in a wind energy plant and wind energy plant with at least two nominal speeds |
| 06/06/2007 | CN2909695Y Drive system of non-contact parallel section switch variable-speed motor |
| 06/05/2007 | US7227288 Apparatus and method for increasing efficiency of electric motors |
| 06/05/2007 | US7227284 Alignment apparatus and exposure apparatus using the same |
| 06/05/2007 | CA2441249C Circuitry configuration for a regeneration valve for fuel tank ventilation in a motor vehicle |
| 05/30/2007 | EP1789236A2 Controller for hand-help electrical device for cutting hair |
| 05/30/2007 | EP1696818B1 Changing amplitude of movement by changing the drive frequency of a toothbrush brushhead |
| 05/30/2007 | EP1188221B1 Linear motor |
| 05/30/2007 | CN2907087Y Single-phase motor regulator |
| 05/30/2007 | CN2907085Y Variable speed motor driving device |
| 05/30/2007 | CN1972080A Rechargeable brushless motor capable of shift and control apparatus and method |
| 05/30/2007 | CN1319265C Linear vibration motor |
| 05/29/2007 | US7224557 Method and system of controlling asynchronous contactors for a multi-phase electric load |
| 05/29/2007 | US7224141 Position controller of motor |
| 05/29/2007 | US7224138 Method, system, and program product for feedback control of a target system utilizing imposition of a periodic modulating signal onto a command signal |
| 05/24/2007 | US20070114961 Activation of an electric motor with continuous adjustment of the commutation angle |
| 05/24/2007 | DE102005052991A1 Verfahren und Schaltungsanordnung zur Steuerung des Betriebs eines Elektromotors eines elektrischen Gerätes, insbesondere eines elektrischen Hausgerätes, sowie dabei einsetzbare Schnittstellenschaltungsanordnung Method and circuit arrangement for controlling the operation of an electric motor of an electrical appliance, in particular an electrical household appliance, which can be used here as well as interface circuitry |
| 05/23/2007 | EP1787385A1 Method for controlling a wound rotor synchronous motor |
| 05/23/2007 | CN2904476Y Independent-excited phase corrector |
| 05/23/2007 | CN1968000A Electromotor control device and electric vacuum cleaner using same |
| 05/23/2007 | CN1317821C Drive arrangement, especially for a lifting mechanism and/or a traveling drive |
| 05/22/2007 | US7221152 Method in salient-pole permanent magnet synchronous machine |
| 05/22/2007 | US7221121 Frequency converter for different mains voltages |
| 05/22/2007 | US7221116 Motor control apparatus |
| 05/18/2007 | WO2007001340A3 Hybrid gas turbine engine starter-generator |
| 05/16/2007 | CN2900007Y Hydraulic driver for working roller speed changing movement of plate rolling machien corrector |
| 05/10/2007 | WO2007052026A1 Control of switched reluctance machines |
| 05/10/2007 | WO2007051690A1 Method and circuit arrangement for controlling operation of an electric motor of an electrical appliance, particularly an electrical household appliance, and interface circuit arrangement used therein |
| 05/10/2007 | WO2006115411A3 Control circuit with reduced load for a bypass switch |
| 05/10/2007 | US20070103101 Rotating electric machine with built-in control device |
| 05/10/2007 | US20070103008 Moving magnet type linear slider |
| 05/09/2007 | EP1783891A1 Control of switched reluctance machines |
| 05/09/2007 | EP1782530A1 Method and apparatus for instability detection and correction in a domestic combined heat and power unit |
| 05/09/2007 | EP1243067B1 High performance brush motor drive in conjunction with low cost sr motor drive |
| 05/09/2007 | CN2899281Y Motor controller |
| 05/09/2007 | CN1961470A Moving magnet type linear slider |
| 05/09/2007 | CN1960163A Electricity saving device of full automatic three-phase motor |
| 05/09/2007 | CN1960162A Drive circuit of PWM motor |
| 05/03/2007 | US20070096571 Electric submersible pumps |
| 05/02/2007 | EP1780857A2 Control unit for an electrical drive motor |
| 05/02/2007 | CN1957525A Coil load driving circuit and optical disc device |
| 05/02/2007 | CN1314194C Position-of-magnetic-pole detecting device |
| 05/01/2007 | US7211974 Motor and drive control system thereof |
| 04/26/2007 | US20070090780 Series motor and method of controlling the same |
| 04/25/2007 | EP1777792A2 Control and protection methodologies for a motor control module |