| 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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| 06/22/1995 | WO1995016986A2 Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape drive |
| 06/21/1995 | EP0658266A1 Process and device for controlling with pulsed signals. |
| 06/21/1995 | CN1103941A Device for electrically controlling wind supply in apparatus for hot gas heating |
| 06/13/1995 | US5424625 Repulsion motor |
| 06/13/1995 | US5424624 Driver circuit for electric actuator |
| 06/08/1995 | DE4427639A1 Electric vacuum cleaner with variable suction |
| 06/06/1995 | US5422557 Method and apparatus for controlling the speed of a single phase induction motor using frequency variation |
| 06/06/1995 | US5422525 Switched reluctance machine having unbalance forces compensation coils |
| 05/31/1995 | EP0655175A1 Process for operating permanently excited single-phase alternating current machines |
| 05/17/1995 | EP0653832A2 Method and device for controlling speed of a washing machine motor |
| 05/16/1995 | US5416392 Real-time vision system and control algorithm for a spherical motor |
| 05/11/1995 | DE4416342C1 Electronics for commutator motors |
| 05/11/1995 | DE4337614A1 Differential-pressure control for a pump system |
| 05/10/1995 | EP0652632A2 Power supply for vibrating compressors |
| 05/02/1995 | US5412303 Method and apparatus providing minimal power consumption, indication of savings and fault detection |
| 04/26/1995 | EP0649577A1 Fault-tolerant reluctance motor. |
| 04/26/1995 | EP0539401B1 Process and circuit for the sensor-less detection of the angle of rotation in a synchronous machine without a damper and preferably excited by a permanent magnet and powered via a converter |
| 04/26/1995 | EP0536113B1 Motor or position transducer |
| 04/25/1995 | US5410240 Method and device for open-loop control of single-phase or multiphase A.C. power controllers |
| 04/25/1995 | US5410236 Device to regulate the speed of an electric motor and its method of operation |
| 04/25/1995 | US5410235 Method and apparatus for sensing the rotor position of a switched reluctance motor |
| 04/19/1995 | EP0362399B1 Motor output change-over control unit |
| 04/18/1995 | US5408401 For converting direct current power into alternating current |
| 04/13/1995 | WO1995010135A1 Electric motor with torque detecting means |
| 04/11/1995 | US5406184 High-speed plural-phase reluctance type motor including a plurality of semiconductor switching elements each repectively connected to one of a plurality of armature coils for quickly reducing or building up exciting current |
| 04/04/1995 | US5404088 Circuit for increasing motor output to compensate for increased load |
| 03/28/1995 | US5402049 System and method for controlling a variable reluctance spherical motor |
| 03/23/1995 | WO1995008214A1 Pulse width modulating motor controller |
| 03/22/1995 | EP0419656B1 Speed controller |
| 03/21/1995 | US5399959 Circuit arrangement for contactless switchover of operation parameters of an electrically driven tool |
| 03/21/1995 | US5399948 Governor circuit for universal series (or compound) motor |
| 03/21/1995 | CA1334864C Method and system for controlling a machine tool such as a turning machine |
| 03/09/1995 | WO1995006941A1 Voice coil motor control circuit and method |
| 03/09/1995 | DE4330386A1 Switched reluctance motor |
| 03/08/1995 | EP0641501A1 Variable reluctance drive system. |
| 02/22/1995 | EP0308517B1 Vaccum cleaner |
| 02/16/1995 | DE4327033A1 Drive and control device for at least one commutator motor |
| 02/15/1995 | EP0638981A1 Motor current status sensor |
| 02/13/1995 | CA2129499A1 Motor current status sensor |
| 02/08/1995 | EP0507835B1 A method and an arrangement for starting an electrical machine having varying reluctance |
| 01/26/1995 | WO1995002922A1 Reluctance motor |
| 01/26/1995 | WO1995002920A1 Efficient control system for electric motors |
| 01/26/1995 | DE4324306A1 Method and circuit arrangement for operating a convertor motor which is excited by a rotating field |
| 01/26/1995 | CA2166862A1 Efficient control system for electric motors |
| 01/25/1995 | EP0635931A2 Control of an inductive load |
| 01/24/1995 | US5384524 Voice coil motor control circuit and method for servo system control in a computer mass storage device |
| 01/12/1995 | DE4322223A1 Regulating device (control device) for a compressor motor of a refrigerator and/or freezer |
| 01/05/1995 | DE4421976A1 Rotation speed control device for an alternating-current motor |
| 01/04/1995 | EP0632572A1 Controller for energization of reluctance motor |
| 12/28/1994 | EP0631373A2 Method and apparatus for controlling hybrid excitation type permanent magnet synchronous motor |
| 12/27/1994 | US5376851 Variable reluctance motor with full and short pitch windings |
| 12/21/1994 | EP0629319A1 Apparatus for correcting hysteresis synchronous motor hunting |
| 12/13/1994 | US5373206 Position detection of rotors for switched reluctance motor |
| 12/08/1994 | WO1994028618A1 Electric motor drive |
| 11/24/1994 | WO1994027360A1 Method for controlling current for synchronous motor |
| 11/15/1994 | US5365155 Rotational speed control and use of same to control the rotational speed of an electric hand tool motor |
| 11/09/1994 | EP0623991A1 Dimming device for a load |
| 11/09/1994 | CN1094872A Device for controlling the variation of the power and/or the speed of a load |
| 11/08/1994 | US5361707 Multiple feeder system of feeder sections for feeding ground coils of superconductive magnetically levitated railway |
| 11/06/1994 | CA2122648A1 Power and/or speed control device |
| 11/03/1994 | DE4314290A1 Reluctance machine |
| 11/03/1994 | DE4314211A1 Method for controlling the switching-off process (turning-off process, disconnection process) in the strands of a reluctance motor |
| 11/02/1994 | EP0587818B1 Fan installation |
| 10/27/1994 | DE4312987A1 Method and circuit for monitoring asynchronous motors which are operated from a single-phase alternating-current mains system |
| 10/26/1994 | EP0455632B1 Linear motor propulsion system |
| 10/25/1994 | US5359273 Load-control circuit for a mains-powered asynchronous single-phase capacitor motor |
| 10/25/1994 | US5359272 Sensorless drive control and method for doubly-fed reluctance motor |
| 10/20/1994 | DE4312328A1 Switched reluctance motor |
| 10/20/1994 | DE4312162A1 Hand power tool with sensor guidance |
| 10/18/1994 | US5355749 Control apparatus and control method for motor drive vehicle |
| 10/13/1994 | WO1994023490A1 Repulsion motor |
| 10/12/1994 | CN1093507A Method and apparatus for controlling single phase induction motor |
| 10/11/1994 | US5355069 Reluctance type motor |
| 10/06/1994 | DE4310772A1 Reluctance motor as a servo drive |
| 09/28/1994 | EP0617505A1 Electric motor speed control unit |
| 09/28/1994 | CN1092915A Single phase AC motor speed control system |
| 09/27/1994 | US5350990 Circuit arrangement for commutating a reluctance motor |
| 09/22/1994 | DE4308836A1 Method for operating a three-phase motor using a converter with a variable frequency and voltage |
| 09/21/1994 | EP0616418A1 Circuit and method for driving variable reluctance motor |
| 09/14/1994 | EP0444203B1 Three-phase reluctance motor |
| 09/08/1994 | DE4406546A1 Treiberschaltung eines schaltbaren Reluktanzmotors Driver circuit of a switchable reluctance motor |
| 09/08/1994 | DE4307096A1 Method for driving an AC-supplied single-phase induction motor |
| 09/07/1994 | EP0318484B1 System for using synchronous secondaries of a linear motor to biaxially draw plastic films |
| 09/06/1994 | US5345160 Variable frequency control system for single phase induction motors |
| 09/01/1994 | WO1994019864A1 Doubly ac-excited variable-speed reluctance motor |
| 09/01/1994 | WO1994019855A1 Field weakening for a doubly salient motor with stator permanent magnets |
| 09/01/1994 | CA2154491A1 Field weakening for a doubly salient motor with stator permanent magnets |
| 08/25/1994 | DE4305477A1 Rotation speed control circuit |
| 08/23/1994 | US5341076 High-speed reluctance type motor |
| 08/23/1994 | US5339504 Tool turret with reduced switching times |
| 08/16/1994 | US5339012 Method and circuit arrangement for sensor-less detection of the rotational angle of a damper-less synchronous machine, preferably excited by a permanent magnet, and supplied by a rectifier |
| 08/04/1994 | WO1994017586A1 Single-phase induction motor safety controller |
| 08/03/1994 | EP0608979A2 Switching circuit |
| 08/02/1994 | US5334922 Asynchronous motor speed control method and device |
| 08/02/1994 | US5333474 Washing machine |
| 07/28/1994 | DE4327162C1 Mains reactive power compensation for inverter-fed sync machine |
| 07/28/1994 | DE4306345C1 Sinusoidal current set-point modification for direct AC-AC converter |
| 07/26/1994 | CA2010146C Switched reluctance motor drive system and laundering apparatus employing same |
| 07/26/1994 | CA1331045C Method for controllably positioning a solenoid plunge |
| 07/13/1994 | EP0605788A2 Single phase AC motor speed control system |