| 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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| 10/05/2005 | EP1583214A2 Apparatus for operating a positioning system |
| 10/05/2005 | EP1580878B1 Power supply circuit for a three-phase induction motor |
| 10/05/2005 | EP1099043B1 Method for controlling an electromagnetic valve drive mechanism for a gas exchange valve in an internal combustion piston engine |
| 10/05/2005 | CN1678230A Variable speed leaf blower |
| 10/04/2005 | US6952086 Linear position sensing system and coil switching methods for closed-loop control of large linear induction motor systems |
| 09/29/2005 | WO2005089283A2 Coil switching circuit for linear electric generator |
| 09/29/2005 | US20050211920 Positioning device and method of initializing a positioning device |
| 09/29/2005 | DE10361200B3 Refrigerating system, has switching device acting on condenser circuit to vary effective capacitance of circuit based on temperature or other correlated parameter in vaporizer, and varying operating characteristics of motor |
| 09/29/2005 | CA2537109A1 Coil switching circuit for linear electric generator |
| 09/28/2005 | EP1580878A1 Power supply circuit for a three-phase induction motor |
| 09/28/2005 | EP0748235B1 Reciprocating pump arrangement |
| 09/27/2005 | US6949845 Planar motor |
| 09/22/2005 | WO2005088827A1 Motor and drive control system thereof |
| 09/22/2005 | WO2004073140A8 Excitation circuit and control method for flux switching motor |
| 09/22/2005 | US20050205362 Tubular linear synchronous motor control for elevator doors |
| 09/22/2005 | DE10000235B4 Vorrichtung zum Messen einer Rotorunwucht An apparatus for measuring a rotor unbalance |
| 09/21/2005 | EP1576719A1 Power conversion apparatus |
| 09/21/2005 | CN1219975C Stroke control mechanism and method for reciprocating compressor |
| 09/20/2005 | CA2409469C Voltage-controlled starting relay for induction motor |
| 09/15/2005 | US20050200224 Apparatus and Method for Increasing Efficiency of Electric Motors |
| 09/15/2005 | US20050200213 Motor and drive control system thereof |
| 09/15/2005 | DE102004037122A1 Vorrichtung und Verfahren zur Steuerung des Betriebs eines Kompressors Apparatus and method for controlling the operation of a compressor |
| 09/14/2005 | EP1573892A1 Induction motor supply control device |
| 09/14/2005 | EP1516409A4 High phase order elctrical rotating machine with distributed windings |
| 09/13/2005 | US6943517 Single phase motor driving circuit and single phase motor driving method |
| 09/13/2005 | US6943514 Motor control circuit for supplying a controllable driving current |
| 09/13/2005 | US6943510 Excitation circuit and control method for flux switching motor |
| 09/13/2005 | US6943508 Tubular linear synchronous motor control for elevator doors |
| 09/13/2005 | US6942469 Solenoid cassette pump with servo controlled volume detection |
| 09/08/2005 | US20050194856 Controlled reluctance AC induction motor |
| 09/08/2005 | US20050194802 Electrically operated chucking apparatus |
| 09/07/2005 | EP1570566A1 Gas turbine engine starter generator with multiple windings on each exciter stator pole |
| 09/07/2005 | CN1218468C Method for determining rotor position in switch reluctance motor and rotor position detector thereof |
| 09/07/2005 | CN1218466C Method for controlling operation of switch reluctance motor |
| 09/06/2005 | US6940685 Voltage-mode drive for driving complex impedance loads |
| 09/06/2005 | US6940250 Synchronous motor control device and method of correcting deviation in rotational position of synchronous motor |
| 09/06/2005 | US6940249 Inverter device |
| 09/06/2005 | US6940242 Motor control system for dynamically changing motor energization current waveform profiles |
| 09/01/2005 | US20050190005 Method and apparatus for generating pulse-width modulated waveform |
| 09/01/2005 | US20050189902 Direct control of an induction motor |
| 09/01/2005 | US20050189893 Method for determining the effective resistance of a DC motor and open loop voltage mode controlling of a DC motor |
| 09/01/2005 | US20050189824 Reciprocating motor |
| 09/01/2005 | DE102004004350B3 Verfahren zur Verringerung der Drehzahl eines Antriebsstranges in einer Windenergieanlage sowie Windenergieanlage mit mindestens zwei Nenndrehzahlen A method for reducing the speed of a drive train in a wind turbine and wind power plant with at least two nominal speeds |
| 08/31/2005 | EP1567769A1 A control system for the movement of a piston |
| 08/31/2005 | CN1663110A Brushless motor control utilizing independent phase parameters |
| 08/31/2005 | CN1663108A System and method for determining the resonant frequency of an oscillating appliance, in particular a power toothbrush |
| 08/31/2005 | CN1663099A Electric motor windings |
| 08/31/2005 | CN1217479C Appts for controlling synchronous motor |
| 08/25/2005 | WO2004025822A9 Control of an electrical reluctance machine |
| 08/25/2005 | US20050184689 Adaptive electric motors and generators providing improved performance and efficiency |
| 08/25/2005 | US20050184687 Apparatus and method for controlling operation of compressor |
| 08/24/2005 | CN1659777A Control system of electric machine for dynamic changing wavecurve of electric machine energized current |
| 08/24/2005 | CN1657777A Apparatus and method for controlling operation of compressor |
| 08/24/2005 | CN1216449C Control system for linear vibration electric motor |
| 08/18/2005 | WO2005076462A1 Electrically driven vehicle |
| 08/18/2005 | WO2005076459A1 Control of electrical machines |
| 08/18/2005 | WO2005076454A1 Control of electrical machines |
| 08/18/2005 | DE19843106B4 System zur Drehzahlsteuerung von Wechselstrom-Motoren System for speed control of AC motors |
| 08/17/2005 | EP1564882A2 Direct control of an induction motor |
| 08/17/2005 | CN1655441A Method and apparatus for switching an AC machine between a drive and a power supply |
| 08/17/2005 | CN1215642C Tri-phase induction motor driving system and driving method thereof |
| 08/16/2005 | US6930464 Driving circuit for improving starting of hybrid induction motor and method thereof |
| 08/16/2005 | US6930459 Method for reducing the influence of a DC current component in the load current of an asynchronous motor |
| 08/16/2005 | US6930433 Brushless electro-mechanical device |
| 08/11/2005 | WO2005074120A1 Method for reducing the rotational speed of a drivetrain in a wind energy plant and wind energy plant with at least two nominal speeds |
| 08/11/2005 | US20050174084 Motor control apparatus for controlling motor to drive output shaft with positioning accuracy unaffected by backlash in rotation transmission system |
| 08/11/2005 | US20050173992 Auto calibration of attraction-only type actuator commutations |
| 08/11/2005 | DE102004003191A1 Elektrohandwerkzeug mit Speichermöglichkeit Electric hand tool with storage capability |
| 08/10/2005 | CN1214514C Method and apparatus for switching AC machine between driver and power pupply |
| 08/10/2005 | CN1214512C Motor speed controller |
| 08/09/2005 | US6927551 Motor control apparatus and motor control method |
| 08/04/2005 | WO2005071265A1 A linear motor, a linear compressor, a method of controlling a linear compressor, a cooling system, and a linear compressor controlling a system |
| 08/04/2005 | WO2005070625A1 Electric hand-held power tool having a memory function |
| 08/04/2005 | US20050168862 Hard disk drive calibration method and apparatus |
| 08/04/2005 | DE102004002570A1 Error-tolerant control system for multiphase reluctance motor for power steering in road vehicle has circuits determining position of four- pole rotor inside six-pole stator and has two inverters |
| 08/03/2005 | EP1559911A2 Linear compressor and control method thereof |
| 08/03/2005 | CN1649248A Inverter controlling apparatus for driving a motor and an air conditioner using same |
| 08/02/2005 | US6924618 Inverter controller for driving motor, and air conditioner |
| 07/28/2005 | WO2005069476A1 Electric power converting apparatus |
| 07/28/2005 | WO2005046041A3 Method for operating a synchronous machine |
| 07/28/2005 | US20050162120 Method for operation of a converter circuit for a washing machine or a washer/drier, converter circuit, and washing appliance or washer/drier |
| 07/27/2005 | EP1557935A1 Inverter controlling apparatus for driving a motor and an air conditioner using same |
| 07/26/2005 | US6922036 Method and apparatus for reducing noise and vibration in switched reluctance motor drives |
| 07/21/2005 | WO2005048443A3 Brushless repulsion motor speed control system |
| 07/21/2005 | US20050156555 Method for detecting angular difference and apparatus for controlling synchronous motor |
| 07/21/2005 | US20050156550 Failure monitor for motor drive control system |
| 07/21/2005 | US20050156473 Polyphase linear motor and its drive method, and stage device, exposure system, and device manufacturing method using the polyphase linear motor |
| 07/20/2005 | EP1555748A2 Method for detecting angular difference and apparatus for controlling synchronous motor |
| 07/20/2005 | CN1641981A Method for detecting angular difference and apparatus for controlling synchronous motor |
| 07/19/2005 | US6919700 Adaptive control of motor stator current waveform profiles |
| 07/19/2005 | US6918300 System and method for determining the resonant frequency and/or amplitude of an oscillating appliance such as a power toothbrush |
| 07/14/2005 | WO2005064251A1 Air-separation apparatus, integrated air-separation and metal-production apparatus and method of starting one such air-separation apparatus |
| 07/14/2005 | WO2005001903A3 Pulse drive of resonant mems devices |
| 07/14/2005 | US20050154545 Method and apparatus for identifying an operational phase of a motor phase winding and controlling energization of the phase winding |
| 07/14/2005 | US20050152794 Linear compressor and control method thereof |
| 07/14/2005 | US20050151501 Rotor position detection of an electrical machine |
| 07/14/2005 | US20050151492 Motor control apparatus for adjusting target rotation speed of motor in accordance with current condition of motor load |
| 07/14/2005 | US20050151491 Control apparatus for selectively driving plural stator windings of synchronous motor |
| 07/14/2005 | DE10357312A1 Device for operating an adjustable system such as an awning in two directions feeds current commands in parametrized form to control unit through supply voltage connections |
| 07/14/2005 | DE102004045068A1 Steuervorrichtung für elektrische Stellglieder A control device for electric actuators |