Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02P - Control or regulation of electric motors, generators, or dynamo-electric converters; Controlling transformers or reactors or choke coils › H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control
Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487)
12/1988
12/29/1988WO1988010533A1 Housing structure of amplifier unit for ac spindles
12/28/1988EP0296840A2 Method and apparatus for induction motor drive
12/28/1988EP0296699A2 Computer-based control system especially for a motor
12/22/1988DE3818975A1 Method and device for controlling a lifting motor
12/21/1988EP0295850A2 Speed control for orbital shaker with reversing mode
12/13/1988US4791350 Current regulated switching regulator for gating gate turnoff devices
12/13/1988CA1246717A1 Rotorcraft load factor enhancer
12/01/1988WO1988009584A1 Alternating current motor control system with emergency control
11/1988
11/30/1988EP0292573A1 Speed controller
11/29/1988US4788479 Control mechanism for a separately excited DC drive motor and method for control of a DC drive motor
11/17/1988WO1988009087A1 Temperature compensative revolution speed control for an induction motor
11/17/1988EP0290480A1 Power circuit for switching the number of poles on the rotor of synchronous machines by using rotative diodes
11/15/1988US4784580 Airflow control system
11/09/1988EP0289626A1 Position control system
11/03/1988WO1988008640A1 Device for controlling speed of servo motor
11/03/1988WO1988008639A1 Power source regeneration circuit
11/03/1988WO1988008477A1 Process for regulating the speed of rotation of an electric motor
10/1988
10/20/1988WO1988008221A1 Circuit arrangement for operation of a brushless small single-phase motor in the d.c. network of motor vehicles
10/20/1988DE3711397A1 Schaltungsanordnung zum betreiben eines buerstenlosen kleinen einphasenmotors am gleichspannungsnetz von kraftfahrzeugen Circuitry to operate a buerstenlosen small single phase motor at the same voltage grid of motor vehicles
10/19/1988CN85109746A Lift control apparatus
10/18/1988US4779034 Forced commutation for variable speed motor
10/18/1988US4779031 Motor system
10/11/1988US4777419 Control apparatus and method for operating a switched reluctance motor
10/06/1988WO1988007347A1 Vaccum cleaner
09/1988
09/27/1988US4774448 Reversible variable-speed 2-phase electric motor
09/21/1988EP0283325A2 Reversible drives, and ventilating fans employing such drives
09/20/1988CA1242262A1 Digital servo apparatus
09/14/1988EP0281798A2 Position control for the rapid positioning with a D.C. servo-motor
09/13/1988US4771224 Digital pulse generator for controlled thyristor switches and motor drive embodying the same
09/13/1988US4771223 Motor speed control system
09/07/1988WO1988006817A1 Drive control system for electric motor
09/07/1988EP0280931A1 Digital servo system using microcomputer for controlling phase and speed of rotary body
08/1988
08/30/1988US4767975 Controller for induction motors
08/24/1988EP0278988A1 Alternating current motor control apparatus.
08/09/1988US4763060 AC motor drive method and system using a pulse width modulated inverter
08/09/1988US4763059 Method and apparatus for induction motor drive
08/03/1988EP0276625A2 Control apparatus and method for operating a switched reluctance motor
08/02/1988US4761600 Dynamic brake control
08/02/1988CA1239981A1 Drive system for a.c. voltage motors
07/1988
07/28/1988DE3800653A1 Electronic switching commutator for controlling asynchronous motors
07/14/1988WO1988005225A1 Motor controller
07/13/1988EP0274036A1 Motor control
07/06/1988EP0273052A1 Device for detecting the rotational position of rotor of motor
07/05/1988US4755730 Variable resistance output motor controller
07/05/1988US4755729 Method of controlling a control system with improved robustness to disturbances
07/05/1988US4755700 Variable speed AC motor
06/1988
06/16/1988WO1988004493A1 Speed controller
06/15/1988EP0270689A1 Three-phase ac motor controller
06/14/1988US4751451 Fan motor control system
06/14/1988US4751442 Servomotor drive control system
06/08/1988EP0270072A2 Speed control device
06/07/1988US4749932 Apparatus for controlling an A-C powered elevator
05/1988
05/19/1988WO1988003678A1 Position control system
05/17/1988US4745347 Low cost instant reversing circuit
05/10/1988US4743828 Electric drive system
05/04/1988EP0265867A2 Apparatus for controlling power converters
05/04/1988CN87107172A Controller of electric power convertor
04/1988
04/27/1988EP0264728A1 Method and apparatus for operating vacuum cleaner
04/27/1988CN87106108A Electromechanical actuator
04/19/1988US4739237 PLL motor controller
04/19/1988US4739230 Control device for controlling motor speed without hunting
04/19/1988US4738211 Sewing machine control device
04/06/1988EP0263060A1 Electrical asynchronous machine supplied by a pulsed converter having a short-circuited rotor
03/1988
03/31/1988DE3632512A1 Single-phase induction motor connected in star
03/24/1988WO1988002195A1 Inverter
03/24/1988DE3629826A1 Circuit arrangement for rotation speed regulation of a DC motor
03/22/1988US4733149 Adaptive control system
03/22/1988US4733146 Energy recovery system for cyclic drives
03/22/1988US4733144 Electronic digitized proportional-integral controller
03/22/1988EP0203145A4 Microprocessor speed controller.
03/15/1988US4731572 Precision electronic speed controller for an alternating-current
03/15/1988US4731568 Error signal generator
03/01/1988CA1233509A1 Twelve pulse ac motor drive
02/1988
02/25/1988WO1988001450A1 Alternating current motor control apparatus
02/24/1988EP0256937A1 Control and dialog device, espcecially for a variable-speed drive
02/24/1988EP0256769A1 Electromechanical actuator
02/24/1988EP0256141A1 Method of controlling servo motor
02/23/1988US4727300 Motor control method
02/18/1988DE3643024C1 Circuit arrangement for a gradient limiter
02/09/1988US4724372 Speed control apparatus of hydraulic actuator
01/1988
01/28/1988WO1988000409A3 Power circuit for switching the number of poles on the rotor of synchronous machines by using rotative diodes
01/27/1988EP0124619B1 Controller for ac motor
01/27/1988CN87104603A Arrangement for controlling motor speed
01/26/1988US4721895 Multi-speed analog servo
01/20/1988EP0252948A1 Motor system
01/19/1988US4719995 Control apparatus for A.C. elevator
01/14/1988WO1988000409A2 Power circuit for switching the number of poles on the rotor of synchronous machines by using rotative diodes
01/07/1988EP0251763A1 Phase controller for motor
12/1987
12/30/1987WO1987007989A1 Three-phase ac motor controller
12/22/1987US4715012 Electronic tractor control
12/16/1987EP0249465A1 Motor rotation control apparatus
12/16/1987CN87104033A Variable speed controlled induction motor
12/15/1987US4713595 Control apparatus for elevator
12/09/1987EP0248595A2 Variable speed controlled induction motor
12/02/1987EP0247650A2 Motor speed control system
12/02/1987EP0247624A2 Motor speed control system
12/02/1987EP0247206A1 Speed control system
12/02/1987CN87103322A Controlling apparatus of alternating current elevator
12/01/1987US4710825 Disc recording system with speed control
12/01/1987US4710692 Self calibration of the thyristor firing angel of a motor controller using a current window to determine a final value of a reference current lag phase angle
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