| Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487) |
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| 07/02/1998 | WO1998028838A1 Power electronic unit for a synchronous motor |
| 07/01/1998 | CN1038971C 变速系统 Transmission system |
| 06/30/1998 | US5773938 Apparatus for controlling speed of a rotary motor |
| 06/17/1998 | EP0848492A1 Method for diagnosing abnormality of circuit member of inverter driving controller for driving and controlling motor |
| 06/17/1998 | EP0847547A2 A control unit having a disturbance predictor, a system controlled by such a control unit, an electrical actuator controlled by such a control unit, and a throttle device provided with such an actuator |
| 06/10/1998 | EP0846951A2 Motor speed control device |
| 06/09/1998 | US5764024 Pulse width modulator (PWM) system with low cost dead time distortion correction |
| 06/09/1998 | US5764007 Micro-processor based motor control integrated circuit including a boost regulated DC-to-DC converter |
| 06/03/1998 | EP0845854A1 Mechanical vibration detector and vibration damping controller |
| 06/02/1998 | US5761376 System and method of motor control |
| 06/02/1998 | US5760567 Induced voltage reduction method and an induced voltage reduction apparatus for an induction motor |
| 06/02/1998 | US5760566 Control device for stopping the operation of a single-phase asynchronous motor with a capacitor |
| 06/02/1998 | US5760359 Motor control apparatus equipped with a controller for controlling rotational position of motor |
| 05/28/1998 | DE19750915A1 Control device for washing machine has electromagnetic programming unit |
| 05/14/1998 | DE19742423A1 Microcomputer for controlling electric motor |
| 05/13/1998 | EP0639888B1 Method of detecting and regulating load on servomotor |
| 05/13/1998 | CN1038378C Single-phase induction motor, its control method and use in refrigerator |
| 05/07/1998 | WO1998019389A1 Rotating machine integrated with controller, and inverter |
| 05/06/1998 | EP0840437A1 Control circuit for two speed motors |
| 05/06/1998 | EP0840435A2 Motor control circuit |
| 04/28/1998 | US5744929 Stepping motor drive control device for an electronic apparatus |
| 04/28/1998 | US5744928 Digital locked loop |
| 04/28/1998 | CA2047322C Waveform generator for inverter control |
| 04/22/1998 | CN1038172C Motor speed control apparatus |
| 04/14/1998 | US5739663 Phase energization controller and method for controlling switched reluctance machines using simple angular position sensors with improved angle interpolation |
| 04/08/1998 | EP0834984A2 Method for reducing acoustic and vibration energy radiated from rotating machines |
| 04/07/1998 | US5737483 Motor speed control apparatus for motors |
| 04/07/1998 | US5736827 Motor driven step switch |
| 04/01/1998 | EP0833436A2 AC motor control for a high speed deep well pump |
| 04/01/1998 | EP0833435A1 Control device for asynchronous motor driving a blind or a roller shutter |
| 04/01/1998 | EP0833434A1 Synchronous motor synchronising method and device |
| 04/01/1998 | EP0833138A1 Device for determining a resistive torque of a rotating equipment, control system for an electrical motor and parameter regulation for an associated centrifuge |
| 04/01/1998 | EP0627135B1 Controlling device for electric motors |
| 04/01/1998 | CN1177758A Control and operation method for rotary machine |
| 03/31/1998 | US5734249 Method and apparatus for direct torque control of a three-phase machine |
| 03/24/1998 | US5731682 Control unit and control method for motors |
| 03/24/1998 | US5731681 Motor control system for centrifugal machine |
| 03/18/1998 | EP0716782B1 Variable speed motor controller |
| 03/17/1998 | US5729118 Variable speed induction generator-motor with controllable excitation frequency |
| 03/12/1998 | DE19635981A1 Direct speed control method for electrical drives |
| 03/10/1998 | US5726550 Motor control system for centrifuge |
| 03/10/1998 | US5726545 Current controlling method for servo motor |
| 03/05/1998 | DE19634923A1 Regulating non-linear engineering process e.g. DC machine field weakening or multi-axle robot movement behaviour |
| 03/04/1998 | EP0827268A1 A system and method for increasing the efficiency of alternating current induction motors |
| 03/04/1998 | EP0827265A1 Apparatus for determination of control constant |
| 03/04/1998 | CN1175119A System and method for increasing efficiency of alternating current induction motors |
| 03/03/1998 | US5723968 Variable speed system |
| 03/03/1998 | US5723966 System and method for increasing the efficiency of alternating current induction motors |
| 03/03/1998 | US5723918 Bi-directional actuator using a random direction AC motor |
| 02/25/1998 | EP0824969A2 Control system for laboratory centrifuge |
| 02/24/1998 | US5721546 Encoder unit for providing to a servo motor control unit position data which is adjusted to account for processing delays |
| 02/17/1998 | US5719459 Electric motor for a steering mechanism |
| 02/10/1998 | US5717592 Method and system for engine throttle control |
| 02/07/1998 | WO1998028837A1 Motor controller |
| 02/05/1998 | WO1997045777A3 A control system with disturbance predictor and throttle device with electrical actuator |
| 02/04/1998 | EP0822315A2 Circuitry for controlling electrically powered drives for roller blinds |
| 02/03/1998 | US5714859 Servo control apparatus for a motor |
| 01/28/1998 | EP0821467A1 Control method for a dual powered induction machine and machine using this method |
| 01/28/1998 | CN1171865A Economical wide range speed control system |
| 01/28/1998 | CN1171652A Method and apparatus for direct torque control of induction machine |
| 01/27/1998 | US5712541 Method and apparatus for actuating synchronous motors |
| 01/21/1998 | EP0820142A1 Ac motor with reactor connected to power source |
| 01/20/1998 | US5710699 Power electronic interface circuits for batteries and ultracapacitors in electric vehicles and battery storage systems |
| 01/20/1998 | US5710500 Motor speed control apparatus using phase-advance based estimated disturbance signal |
| 01/20/1998 | US5710496 Drive including PID position feedback drive and control system fed by speed control unit and X-ray device comprising such a drive |
| 01/07/1998 | CN1169618A Voltage type inverter and control method thereof |
| 01/06/1998 | US5705905 Source impedance measurement for motor control |
| 12/29/1997 | EP0667009B1 Motor driven step switch |
| 12/17/1997 | EP0616417B1 Method for control of ac motor |
| 12/16/1997 | US5698960 Motor servo system |
| 12/16/1997 | CA2068155C Electric current measurement apparatus for a solid state motor controller |
| 12/10/1997 | EP0812059A1 Control process for a rotary machine, servosystem for carrying out this process and rotary machine with such a system |
| 12/10/1997 | EP0606501B1 Power regeneration system |
| 12/10/1997 | EP0577626B1 A method and a device for altering of the angular velocity of a driven rotating media carrier |
| 12/09/1997 | US5696432 Method of controlling the power of an induction motor |
| 12/06/1997 | CA2208008A1 Process for mechanical control of a rotating machine, system of control for operating the said process, rotating machine equipped with such a system |
| 12/04/1997 | WO1997045777A2 A control system with disturbance predictor and throttle device with electrical actuator |
| 12/03/1997 | CN1166722A Device for controlling speed of rotating motor |
| 12/02/1997 | US5694015 Hunting suppressor for polyphase electric motors |
| 11/26/1997 | EP0809349A1 Fully digital drive system for brushless motor with voltage/current profiles read from a digital memory |
| 11/26/1997 | EP0809095A2 Method and device for measuring the output torque of an electric motor |
| 11/26/1997 | CN1036558C high-efficiency power supply contorl appts.f or variable-speed induction motor |
| 11/19/1997 | CN1165546A Electrical actuator with a refined cascade control unit |
| 11/18/1997 | US5689163 Motor controller |
| 11/05/1997 | EP0805383A1 Apparatus for controlling speed of a rotary motor |
| 11/04/1997 | US5684373 Encoder output method and servo motor encoder |
| 11/04/1997 | US5682634 Method and device for controlling speed of a washing machine motor |
| 10/29/1997 | EP0803968A1 Motor speed controller |
| 10/28/1997 | US5682334 Motor start acceleration profile |
| 10/08/1997 | EP0800265A2 Process and apparatus for direct torque control of an induction machine |
| 10/08/1997 | EP0800264A2 Encoder output method and servo motor encoder |
| 10/08/1997 | EP0800263A1 Drive system for a brushless motor employing predefined profiles of driving currents stored in a nonvolatile memory |
| 10/02/1997 | WO1997036368A1 Frequency converter for an electromotor |
| 09/25/1997 | DE19700074A1 Bidirectional universal motor esp. for hand-held drills and screwdrivers |
| 09/25/1997 | DE19611401A1 Frequenzumrichter für einen Elektromotor Frequency for an electric motor |
| 09/24/1997 | EP0797133A1 Optimal torsional control of an electrical speed controlled drive, characterised by rotation-elastic mechanical properties, using a PI-controller |
| 09/16/1997 | US5668456 Servo motor encoder |
| 09/12/1997 | WO1997032806A1 Arrangement for regulating torques or rotation speeds of a three-phase asynchronous motor allocated to a cable drum which winds or unwinds power cable |
| 09/10/1997 | CN1158817A Speed control apparatus for compensating vibration of elevator |
| 09/09/1997 | US5666034 Method for controlling velocity of a rotary motor and an apparatus therefor |