| Patents for H02P 6 - Arrangements for controlling synchronous motors or other dynamo-electric motors with electronic commutators in dependence on the rotor position; Electronic commutators therefor (19,185) |
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| 12/11/1990 | US4977356 Driver circuit for D.C. motor |
| 11/28/1990 | EP0399146A1 Control system for switched reluctance motor operating as a power generator |
| 11/28/1990 | CN1010645B Control apparatus for brush-less motor |
| 11/15/1990 | WO1990013941A1 Reluctance-type electric motor |
| 11/14/1990 | EP0397514A2 Bridge inverters and the control thereof |
| 11/14/1990 | EP0396859A2 Control system for low speed switched reluctance motor |
| 11/14/1990 | EP0396858A2 Control system for high speed switched reluctance motor |
| 11/13/1990 | US4970445 Brushless motor drive device |
| 11/09/1990 | CA2016016A1 Control system for switched reluctance motor operating as a power generator |
| 11/09/1990 | CA2016015A1 Control system for high speed switched reluctance motor |
| 11/09/1990 | CA2016006A1 Control system for low speed switched reluctance motor |
| 10/31/1990 | DE3914082A1 Electronically-commutated electric motor - has currents in stator windings overlapped during commutation process |
| 10/30/1990 | US4967122 Digital synchronizing circuit for brushless DC motor |
| 10/18/1990 | WO1990012278A1 Process for the detection without a sensor of the angle of rotation in undamped synchronous machines, preferably excited by permanent magnets |
| 10/16/1990 | US4963808 Motor control apparatus |
| 10/16/1990 | US4963801 Motor driving circuit for selectivity driving different motor types |
| 10/11/1990 | DE3915356A1 Electric motor with reduced vibration for acoustically sensitive area - has asymmetric air gap for generating magnetic side thrust on output shaft to minimise effect of pulsed torque variation |
| 10/03/1990 | EP0390036A1 Motor-driving circuit and wire-bonding apparatus |
| 10/03/1990 | EP0390014A1 Power module for the electronic control of a D.C. motor |
| 09/30/1990 | CA2013275A1 Direct-current motor electronic control power unit |
| 09/26/1990 | EP0245415B1 Supply current limiter for a direct current electric motor |
| 09/25/1990 | US4959596 Switched reluctance motor drive system and laundering apparatus employing same |
| 09/25/1990 | US4958948 System for driving a brushless motor |
| 09/20/1990 | WO1990010973A1 Starting a brushless dc motor |
| 09/20/1990 | WO1990007220A3 Electrically switched synchronous motor drive |
| 09/19/1990 | EP0388139A2 Speed controller and instrument having the same |
| 09/19/1990 | EP0387358A1 Dc motor |
| 09/11/1990 | US4955790 Current limiting circuit for fuel pump motor |
| 08/29/1990 | EP0176599B1 Device for driving a sewing machine |
| 08/28/1990 | US4952860 Motor control system |
| 08/28/1990 | US4952853 Method and apparatus for sensing direct current of one polarity in a conductor and electronically commutated motor control responsive to sensed motor current |
| 08/22/1990 | EP0382887A1 Stepper motor motion sensor |
| 08/22/1990 | CN2060634U Fan umbrella by means of solar energy |
| 08/21/1990 | US4950968 DC motor driving apparatus with function for compensating for drive voltage change |
| 08/16/1990 | EP0382166A1 Speed control apparatus for movable equipment |
| 08/08/1990 | EP0381597A2 Digital robot control having pulse width modulator operable with reduced noise |
| 08/07/1990 | US4947091 Device for preventing a coil of a brushless motor from burning |
| 08/01/1990 | EP0221939B1 Control circuit for a brushless electric motor |
| 07/24/1990 | US4943747 Brushless unequal poles controlled electric motor |
| 07/18/1990 | EP0377835A2 Device for detecting the rotor position and rotation speed of an electric motor |
| 07/18/1990 | EP0377771A1 Torque control method for multiphase electronically commutated electric motors, especially for synchronous motors |
| 07/17/1990 | US4942344 Control system for brushless motors |
| 07/10/1990 | US4940912 Brushless electric motor with self starting asymmetry |
| 07/10/1990 | CA1271545A1 Control system for an electronically commutated motor, electronically commutated motor system, laundry apparatus and methods for controlling same |
| 06/28/1990 | WO1990007220A2 Electrically switched synchronous motor drive |
| 06/27/1990 | EP0374805A2 Electronically commutated synchronous driving motor |
| 06/12/1990 | US4933834 Control system with improved robustness to disturbances |
| 06/12/1990 | US4933621 Current chopping strategy for switched reluctance machines |
| 06/12/1990 | US4933620 Control system for low speed switched reluctance motor |
| 06/05/1990 | US4931713 Rectifier electric drive |
| 05/31/1990 | DE3900589A1 Arrangement for synchronization of the rotation speeds of at least two electronically commutated DC motors |
| 05/23/1990 | CN1042458A Circuit for actuating brushless direct-motor |
| 05/22/1990 | US4928043 Back EMF sampling circuit for phase locked loop motor control |
| 05/22/1990 | US4928042 Circuit arrangement for operating a multi-phase synchronous motor on a direct-voltage system |
| 05/15/1990 | US4926099 Bimodal controller for a multi-phase brushless DC motor |
| 05/09/1990 | EP0366892A2 DC brushless motor control circuit arrangement |
| 05/09/1990 | EP0171415B1 Current sense demodulator |
| 05/08/1990 | US4924161 Position and speed detecting device |
| 05/08/1990 | US4924156 For electronically regulating the speed |
| 05/03/1990 | DE3835031A1 Method for braking brushless DC motors |
| 05/01/1990 | US4922513 Rotation control circuit for a hall motor |
| 05/01/1990 | US4922169 Method and apparatus for driving a brushless motor |
| 05/01/1990 | CA1268420A1 Solid phase diffusion assay |
| 04/24/1990 | US4920306 Method for controlling the torque of a synchronous machine supplied by a frequency converter |
| 04/19/1990 | WO1990004283A1 Reluctance motor |
| 04/19/1990 | DE3934139A1 Electronic commutation control for brushless DC motor - uses RC filters connected to stator windings and voltage comparator for detecting rotor position |
| 04/19/1990 | DE3932762A1 Electronically-commutated DC machine - has auxiliary electronic power switch supplied with modulated clock pulses to control speed |
| 04/19/1990 | DE3835030A1 Method for commutating brushless DC motors |
| 04/18/1990 | CN1007649B Electric fan |
| 04/12/1990 | DE3834017A1 Method and device for rotational speed measurement |
| 04/11/1990 | EP0363169A2 System for driving a brushless motor |
| 04/11/1990 | EP0363073A2 Method and apparatus for driving a brushless motor |
| 04/04/1990 | EP0361267A2 A rotation control circuit for a hall motor |
| 04/03/1990 | US4914361 Method and apparatus for controlling the speed of moving body |
| 03/27/1990 | US4912389 Rotary position detector for stepping motor |
| 03/27/1990 | US4912379 Multi-phase brushless motor with increased starting torque and reduced torque ripple |
| 03/27/1990 | US4912378 For determining rotor position information from a brushless magnet rotor |
| 03/22/1990 | WO1990003063A1 Dc motor |
| 03/22/1990 | DE3831633A1 Arrangement for measuring torques, especially on brushless DC motors |
| 03/07/1990 | CN1040234A Textile machine with drawframes |
| 03/07/1990 | CN1040233A Textile machine with drawframes |
| 02/28/1990 | EP0355557A1 Textile machine with a drafting arrangement |
| 02/27/1990 | US4904915 Velocity control apparatus |
| 02/13/1990 | US4900993 Driving apparatus for brushless motor |
| 02/07/1990 | EP0190240B1 Collector-free direct current motor |
| 02/06/1990 | US4899093 Circuitry for electronically commutating a direct-current motor |
| 01/30/1990 | US4897583 Variable speed variable torque brushless DC motor |
| 01/25/1990 | WO1990000831A1 Motor drive system |
| 01/17/1990 | CN1006510B Controller of dc brushless motor |
| 01/10/1990 | CN1038728A Motor having electronic commutation, especially for driving fluid discharge device, particular in hair-dryer mounted such motor |
| 01/09/1990 | CA1264352A1 Motor switching control and its application to the speed variation of the control circuit |
| 01/03/1990 | EP0349447A1 Motor control circuit with a step or self-commutation mode |
| 12/28/1989 | WO1989011523A3 Rotor position sensing |
| 12/28/1989 | WO1989011148A3 Tape drive machines |
| 12/27/1989 | EP0347862A2 Brushless motor driver |
| 12/26/1989 | US4890047 Digital pulse width modulation control of brushless DC motors |
| 12/19/1989 | US4888538 System for remote transmission of angular position and force between master and slave shafts |
| 12/19/1989 | US4888533 Brushless DC motor |
| 12/19/1989 | US4888530 Two-phase gate motor |
| 12/07/1989 | DE3819064A1 Method for controlling brushless electric motors and control circuit therefor |