| 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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| 02/11/2003 | US6517329 Switching means supplies alternating current to both first and second coils to supply aeration air into septic tank, and temporarily supplies, in response to control signal from timer, current to only one coil to supply reverse cleaning air |
| 02/06/2003 | US20030026702 Stroke control apparatus of reciprocating compressor and method thereof |
| 02/06/2003 | US20030026701 Apparatus and method for controlling operation of reciprocating motor compressor |
| 02/06/2003 | US20030025475 Apparatus for controlling rotation speed of motor |
| 02/04/2003 | US6515444 Method for controlling a current-regulated motor |
| 01/29/2003 | EP1279218A2 Reluctance motor and a method for controlling a reluctance motor |
| 01/29/2003 | CN1393639A Linear compressor driving controlling method and linear compressor driving controlling method for vehicle |
| 01/23/2003 | WO2003007468A1 Variable speed controller for air moving applications using an acinduction motor |
| 01/23/2003 | WO2003007465A1 Method and apparatus for maintaining force of a variable reluctance motor |
| 01/23/2003 | US20030015987 Apparatus and method for controlling rotation speed of synchronous reluctance motor |
| 01/23/2003 | US20030014860 Electrically operated chucking apparatus |
| 01/22/2003 | EP1278299A2 Braking control method and device for an electronically commutated electric motor |
| 01/22/2003 | CN1393011A Scanning device comprising magnetically guide linear motor |
| 01/22/2003 | CN1392665A Control strategy of switch magnetic resistance driving system |
| 01/22/2003 | CN1392664A Motor speed controller |
| 01/21/2003 | US6509710 Method and system for driving switched reluctance motors (SRM) |
| 01/16/2003 | WO2003005555A1 Rotational speed control for a universal motor having a reduced fluctuation of current |
| 01/16/2003 | US20030011341 Method and apparatus for maintaining force of a variable reluctance motor |
| 01/15/2003 | EP1276222A2 Method for driving a vibrator conveyor |
| 01/14/2003 | CA2134682C Motor driven step switch |
| 01/09/2003 | US20030006722 Control apparatus for vibration type actuator |
| 01/09/2003 | US20030005714 Drive unit for variable displacement electric compressor |
| 01/08/2003 | CN1390381A Device and method for controlling supply of current and static capacitance to compressor |
| 01/08/2003 | CN1390380A Device and method for controlling supply of current and static capacitance to compressor |
| 01/08/2003 | CN1389978A Excitation of switch magnetic resistance motor |
| 01/01/2003 | CN1388639A Method for controlling operation of switch reluctance motor |
| 12/31/2002 | US6499447 Process for operating an electromagnetic actuator |
| 12/26/2002 | US20020195984 XYZ-axes table |
| 12/24/2002 | US6498447 Apparatus and method for controlling an electric machine |
| 12/19/2002 | US20020190684 Control strategy for switched reluctance drive systems |
| 12/19/2002 | US20020190671 Drive system for a set of machines |
| 12/18/2002 | EP1267480A2 A control strategy for switched reluctance drive systems |
| 12/17/2002 | US6495996 Linear motor control with triac and phase locked loop |
| 12/17/2002 | US6495985 Operation of a switched reluctance machine from dual supply voltages |
| 12/12/2002 | WO2002099308A2 Variable electromagnetic damping apparatus |
| 12/12/2002 | US20020186491 Supply variance compensation method for switched voltage mode voice coil motor driver circuit |
| 12/12/2002 | US20020185990 Excitation of switched reluctance motors |
| 12/12/2002 | US20020185989 Electric motor control having DC-DC converter and method of using same |
| 12/11/2002 | EP1265349A1 Controling of a switched reluctance motor |
| 12/11/2002 | EP1264393A1 Apparatus for continuously variable speed electric motor applications |
| 12/11/2002 | CN1384595A AC motor controller |
| 12/11/2002 | CN1096141C Speed controlling method for switch reluctance motor |
| 12/05/2002 | US20020181142 Magnetic disc storage apparatus |
| 12/05/2002 | US20020181141 Magnetic disk storage apparatus |
| 12/05/2002 | US20020180398 Driving equipment for synchronous motors |
| 12/05/2002 | US20020180387 Control apparatus for vibration type actuator |
| 12/05/2002 | DE10207511A1 Vorrichtung und Verfahren zur Steuerung des Betriebs eines Linearmotorverdichters Apparatus and method for controlling operation of a linear motor compressor |
| 12/04/2002 | EP1263124A2 Vector control method and system for a synchronous motor |
| 11/28/2002 | WO2002095927A1 Dual sided self-oscillation circuit for driving an oscillatory actuator |
| 11/28/2002 | WO2002095923A1 Linear compressor drive device |
| 11/28/2002 | US20020175652 Method for controlling operating of switched reluctance motor (SRM) |
| 11/28/2002 | US20020175649 Method for regulating an electrical machine by means of a pulse-width modulkation inverter |
| 11/28/2002 | US20020175643 Dual sided self-oscillation circuit for driving an oscillatory actuator |
| 11/28/2002 | DE10122004A1 controlling single-phase AC motors involves selecting predefined number of at least half waves of mains voltage per preselectable time interval to control revolution rate of motor |
| 11/27/2002 | CN1381946A Device and method for controlling running of compressor of linear motor |
| 11/27/2002 | CN1094815C Reciprocatory dry shaver |
| 11/26/2002 | US6486628 Energization control system of a motor |
| 11/21/2002 | WO2002061924A9 Electronically controlled changeover switch |
| 11/19/2002 | US6483689 Method for the operation of an electromagnetic servo mechanism |
| 11/14/2002 | US20020167289 Control apparatus for alternating-current motor |
| 11/13/2002 | EP1257049A2 Control apparatus for alternating-current source |
| 11/12/2002 | US6479954 Control and drive system for a single winding electromagnetic actuator employing a single multifunction operational amplifier |
| 11/07/2002 | WO2002089306A1 Mesh connected electrical rotating machine with span changing |
| 11/07/2002 | WO2002089302A1 Linear motor drive unit for a machine |
| 11/07/2002 | DE10122003A1 Pulse current rectifier for a series wound universal motor maintains a sinusoidal mains current form and can adjust motor power |
| 11/07/2002 | CA2442754A1 Linear motor drive unit for a machine |
| 11/05/2002 | US6474276 Method for controlling an electromagnetic valve drive mechanism for a gas exchange valve in an internal combustion piston engine |
| 10/29/2002 | US6472842 Self-tuning control of switched-reluctance motor drive system |
| 10/24/2002 | WO2000000966A3 Improved notch filtering as used in a disc drive servo |
| 10/24/2002 | US20020153858 Method and system of reducing turn-off loss and noise in a switched reluctance motor drive |
| 10/23/2002 | CN1375923A 多功能复合接触器 Multifunctional composite contacts |
| 10/23/2002 | CN1093333C Switching magnet-resistance driver with high power factor |
| 10/22/2002 | US6469468 SR motor controlling method and SR motor having low peak of current flowing therein |
| 10/17/2002 | US20020150477 Apparatus and method for controlling operation of linear motor compressor |
| 10/17/2002 | US20020149341 Method and system for measuring a parameter of motor operation |
| 10/17/2002 | US20020149338 Driving control device of a motor |
| 10/17/2002 | US20020149332 Electric motor control device |
| 10/16/2002 | CN1374750A 可变电压补偿 Variable voltage compensation |
| 10/16/2002 | CN1374061A Controller for rocking chain |
| 10/10/2002 | WO2002079651A1 Control device of linear compressor drive system |
| 10/10/2002 | DE10114973A1 Machine tool has spindle, permanently stimulated synchronous motor, converter controller, and device for altering supply voltage forming at least part of motor connection to converter |
| 10/08/2002 | US6462504 Energization control device for electric motors |
| 10/03/2002 | WO2002078157A1 Linear oscillator and electrically driven toothbrush |
| 10/03/2002 | WO2002078152A1 Sensorless switched reluctance electric machine with segmented stator |
| 10/03/2002 | US20020141098 Time domain voice coil motor control circuit and method |
| 10/03/2002 | US20020140263 Rocking seat control apparatus |
| 10/02/2002 | EP0916178B1 Electrical machines |
| 10/02/2002 | DE10203802A1 Elektromagnetisches Dämpfungssystem Electromagnetic damping system |
| 10/02/2002 | CN1372377A Method for controlling electromagnetic driving device |
| 10/01/2002 | US6459230 Method and system for measuring a parameter of motor operation |
| 09/26/2002 | WO2002061935A8 Power converter device for one of several motor windings on a reluctance motor |
| 09/26/2002 | WO2002054573A3 Vibration motor and apparatus using the same |
| 09/26/2002 | US20020135254 Sensorless switched reluctance electric machine with segmented stator |
| 09/25/2002 | EP1243067A1 High performance brush motor drive in conjunction with lost cost sr motor drive |
| 09/25/2002 | CN1371165A Method of reducing torque ripple of switching reluctance motor |
| 09/24/2002 | US6456033 Pole change induction motor |
| 09/24/2002 | US6456031 Rotor position estimation for switched reluctance machines |
| 09/19/2002 | WO2001076044A3 Reluctance motor and a method for controlling a reluctance motor |
| 09/19/2002 | DE10110265A1 Periodic voltage frequency determination circuit for motor e.g. for vehicle electric window, uses comparison of phase-shifted versions of AC input voltage after removal of DC component with frequency evaluation of comparator output |
| 09/18/2002 | EP0974189B1 Fan cooler |