| 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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| 09/03/1997 | CN1158675A Motor speed controller |
| 09/02/1997 | US5663626 Applied-voltage fuzzy control process for induction motors and device for performing it |
| 08/27/1997 | EP0791240A1 Economical wide range speed control system |
| 08/26/1997 | US5661379 Electric motor |
| 08/21/1997 | WO1997030510A1 Direct torque control inverter arrangement |
| 08/19/1997 | US5659233 Controller for controlling motor transferring power between a plurality of power sources |
| 08/12/1997 | US5656913 Microcomputer for driving induction motor |
| 08/12/1997 | US5656908 Negative coefficient filter for use with AC motors |
| 07/24/1997 | DE19617048C1 Control method for power regulator of electric motor drives |
| 07/22/1997 | US5650886 Disk drive spindle motor start up using an additional motor winding upon startup failure |
| 07/22/1997 | US5650697 Motor unit, motor drive unit, fan unit and method of controlling the motor drive unit |
| 07/17/1997 | WO1997025770A1 Ac motor with reactor connected to power source |
| 07/09/1997 | EP0689733B1 A method for determining a stator flux estimate for an asynchronous machine |
| 07/08/1997 | US5646499 Inverter control apparatus |
| 07/08/1997 | US5646492 Electric motor controller having independent responses to instructions and external disturbances |
| 07/03/1997 | DE19610573C1 Torsion optimisation system for regulated electrical drive |
| 06/25/1997 | EP0780962A2 Electronically commuted motor |
| 06/24/1997 | US5642461 Economical wide range speed control system |
| 06/24/1997 | US5642044 Encoder system |
| 06/19/1997 | DE19650907A1 Electronically commutated motor |
| 06/10/1997 | US5638307 Apparatus having source power control unit responsive to voltage fluctuation |
| 06/10/1997 | US5637975 Power factor corrector for A.C. induction motors |
| 05/21/1997 | EP0774829A2 Circuit with a digital controller for operating a synchronous motor |
| 05/21/1997 | EP0774828A1 Phase energisation controller and method for controlling switched reluctance machines using simple angular position sensors with improved angle interpolation |
| 05/21/1997 | CN1150353A Motor control apparatus equipped with control means for controlling rotational position of motor |
| 05/21/1997 | CN1150352A Speed controlling method for rotary motor and apparatus thereof |
| 05/20/1997 | US5631813 Regenerative AC/DC/AC power converter for a plurality of motors |
| 05/20/1997 | US5631530 Key element for the control of electromotors, especially for cranes and other hoisting equipment |
| 05/13/1997 | US5629590 Rotational drive control device for variable speed drive motor |
| 05/06/1997 | US5627697 Circuit arrangement for motor speed control |
| 05/06/1997 | US5627447 Method and apparatus for detecting current delay angle from motor terminal voltage |
| 05/02/1997 | EP0770757A2 Method of actuating awnings or the like by an electric motor |
| 04/30/1997 | CN1034783C Method for controlling of operation of compressor |
| 04/23/1997 | EP0769851A2 Digital locked loop |
| 04/22/1997 | US5623189 Automatic control of torque or force at moving loads |
| 04/17/1997 | DE19642396A1 DC commutator motor with simplified control of output torque e.g. for motor vehicle steering control |
| 04/15/1997 | US5621295 Device for driving using an electric motor comprising means for measuring the displacement of the driven body |
| 04/08/1997 | US5619114 Signal averager for use with motor controller |
| 04/01/1997 | US5616999 Torque detecting apparatus for reducing torque ripple in an AC motor |
| 03/25/1997 | US5614803 Inverter control apparatus |
| 03/13/1997 | WO1997009776A1 Control device for electrical engines |
| 03/06/1997 | DE19634186A1 Thyristor bridge for energy feedback to AC network e.g. for photovoltaic equipment |
| 03/05/1997 | CN1144416A Motor rotational speed control apparatus |
| 03/04/1997 | US5608301 Motor control system for centrifugal machine |
| 02/27/1997 | WO1997007590A1 Mechanical vibration detector and vibration damping controller |
| 02/26/1997 | EP0759224A1 Method for controlling the power to be transferred via a mains inverter |
| 02/20/1997 | WO1997006362A1 Electrical actuator with a refined cascade control unit |
| 02/20/1997 | CA2201719A1 Electrical actuator with a refined cascade control unit |
| 01/29/1997 | EP0594731B1 Electric machine system |
| 01/28/1997 | US5598077 Control apparatus and a control method for a servomotor |
| 01/08/1997 | EP0752754A1 Method for controlling velocity of rotary motor and apparatus therefor |
| 01/02/1997 | EP0751613A1 Current controlling method for servo motor |
| 01/02/1997 | EP0751610A1 Motor control system for centrifugal machine |
| 12/31/1996 | US5589754 Method for determining a stator flux estimate for an asynchronous machine |
| 12/27/1996 | WO1996042133A1 Energy transfer system of an electric machine having magnetic bearings |
| 12/18/1996 | EP0749201A1 Shielded contacting device |
| 12/18/1996 | EP0547243B1 Method and apparatus for controlling and driving induction motor |
| 12/17/1996 | US5585990 Electronic motor protection apparatus |
| 12/17/1996 | US5585708 Four quadrant motor controller minimizing distortion index |
| 12/10/1996 | US5583412 Apparatus and method for controlling the deceleration of an electric motor |
| 11/27/1996 | EP0744822A2 Motor rotational speed control apparatus |
| 11/21/1996 | WO1996037039A1 Apparatus for determination of control constant |
| 11/19/1996 | US5576606 Asynchronous motor power supply control system |
| 11/13/1996 | EP0741929A1 One switch multi-phase modulator |
| 11/12/1996 | US5574352 Frequency control method for inverter and apparatus therefor |
| 11/12/1996 | US5574351 Method and apparatus for control of stepper motors |
| 11/07/1996 | DE19516355A1 Feed device for frequency converter with reversible energy flux direction e.g. for electric machine control |
| 11/06/1996 | CN1135038A Encoder unit for providing to servo motor control unit position data which is adjusted to account for processing |
| 11/05/1996 | US5572099 Motor speed control with current limit |
| 10/30/1996 | EP0597118B1 Control method for synchronous motor |
| 10/29/1996 | US5570260 Overvoltage protection circuit |
| 10/29/1996 | US5570257 Phase sequence wiring protection apparatus |
| 10/29/1996 | CA2094552C Method for determining motor speed |
| 10/23/1996 | EP0739086A1 Method and device for driving synchronous motors |
| 10/22/1996 | CA2052588C Method and apparatus for controlling the speed of a motor |
| 10/16/1996 | CN1133510A Controller for transducer |
| 10/10/1996 | DE19540106A1 Correcting servomotor control system for processing time delay |
| 10/09/1996 | CN1132961A Single-phase induction motor and refrigerator using single-phase induction motor |
| 10/01/1996 | US5561358 Variable speed pumping-up generator |
| 10/01/1996 | US5561356 Shredder motor circuit with power factor correction |
| 09/24/1996 | US5559408 Device for measuring acceleration |
| 09/05/1996 | DE19507302A1 Oscillation damping of position- and speed-controlled machine tool |
| 09/04/1996 | CN1032724C Energy saving control apparatus and control method for induction motor |
| 09/04/1996 | CN1032711C 压缩机 Compressor |
| 08/27/1996 | US5550880 Motor current signal processor using analog substraction of an estimated largest sine wave component |
| 08/27/1996 | US5550451 Microcomputer with built-in motor control circuit |
| 08/21/1996 | EP0727059A1 Drive and x-ray device comprising such a drive |
| 08/21/1996 | CN1129371A Variable speed system |
| 08/20/1996 | US5548679 Digital PLL system |
| 08/20/1996 | US5548455 Motor control apparatus using speed and phase control in a first loop and phase control in a second loop series with the first loop |
| 08/20/1996 | US5547296 Method of controlling a printhead carriage velocity of a serial printer |
| 08/13/1996 | US5545957 Motor speed controller for suppressing shaft torsion vibration |
| 08/06/1996 | US5543697 Circuit and method for controlling the speed of a motor |
| 07/23/1996 | US5539295 Device for indicating the state of a single-phase asynchronous motor |
| 07/18/1996 | DE19500847A1 AC field excited inverter motor operating method for three=phase slip-ring rotor machine |
| 07/10/1996 | CN1126389A Variable speed generator-motor apparatus capable of improving accuracy of power system |
| 07/03/1996 | EP0720269A1 Stop control device for single-phase asynchronous motor with capacitor |
| 07/03/1996 | EP0720268A1 Stop control device for single-phase asynchronous motor with capacitor |
| 07/02/1996 | US5533166 Method for calculating speed estimated value in speed control system |
| 06/26/1996 | EP0718962A1 Method and device for lowering induced voltage of induction motor |