| Patents for H02P 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage (13,284) |
|---|
| 11/17/1988 | WO1988009087A1 Temperature compensative revolution speed control for an induction motor |
| 11/17/1988 | EP0290890A1 Method and apparatus to determine the field angle of an induction machine digitally |
| 11/15/1988 | US4785225 Control apparatus for an induction motor |
| 11/03/1988 | WO1988008477A1 Process for regulating the speed of rotation of an electric motor |
| 11/02/1988 | EP0289373A1 Pulse width modulation converter |
| 11/02/1988 | EP0139006B1 System for controlling synchronous motor |
| 10/27/1988 | DE3710899C1 Process for producing the torque-controlled variable of an asynchronous machine supplied power via a pulse rectifier |
| 10/25/1988 | US4780658 Control system for induction motor |
| 10/25/1988 | US4779708 Control device for an elevator |
| 10/19/1988 | CN88101891A Electric power converter |
| 10/19/1988 | CN85109746A Lift control apparatus |
| 10/18/1988 | US4779183 Method and apparatus for selectively controlling an operation mode of a PWM inverter between an asychronous mode and a synchronous mode modulation |
| 10/18/1988 | US4779034 Forced commutation for variable speed motor |
| 10/11/1988 | US4777581 Modulation method and apparatus for static power frequency changers |
| 10/11/1988 | US4777420 Induction motor control apparatus and method |
| 10/06/1988 | WO1988007784A1 Pulse width modulation converter |
| 10/04/1988 | US4774899 Speed setting device for an electric sewing machine |
| 09/28/1988 | EP0283954A2 Compressor drive system and air conditioner using the same |
| 09/28/1988 | EP0283952A2 PWM inverter controller |
| 09/28/1988 | EP0283945A2 Power supply device for electric tools |
| 09/27/1988 | US4774448 Reversible variable-speed 2-phase electric motor |
| 09/27/1988 | US4773508 Elevator control apparatus |
| 09/22/1988 | WO1988007287A1 Improved control method of an ac induction motor and device therefor |
| 09/20/1988 | US4772833 Feedback control system for producing pulse width modulation control signal |
| 09/20/1988 | US4772830 Method and apparatus for controlling torque of a servomotor |
| 09/13/1988 | US4771224 Digital pulse generator for controlled thyristor switches and motor drive embodying the same |
| 09/13/1988 | US4771223 Motor speed control system |
| 09/07/1988 | CN88100824A Controlling apparatus for alternating current elevator |
| 09/07/1988 | CN87100946A Gating speed regulation method and apparatus thereof |
| 08/31/1988 | EP0280146A1 Method and apparatus for asynchronous motor's speed regulation using strobe control |
| 08/31/1988 | CN88100823A Motor controlling system |
| 08/30/1988 | US4767976 Control system for PWM inverter |
| 08/30/1988 | US4767975 Controller for induction motors |
| 08/24/1988 | EP0279428A2 Electric motor control system |
| 08/24/1988 | EP0279415A1 Induction motor control apparatus |
| 08/24/1988 | EP0278987A1 Motor control apparatus. |
| 08/23/1988 | US4766360 Induction generator/motor system |
| 08/23/1988 | US4765267 Sewing machine drive device |
| 08/17/1988 | EP0278369A2 Control apparatus for cascaded converter circuit |
| 08/09/1988 | US4763060 AC motor drive method and system using a pulse width modulated inverter |
| 08/09/1988 | US4763059 Method and apparatus for induction motor drive |
| 08/09/1988 | US4763058 Method and apparatus for determining the flux angle of rotating field machine or for position-oriented operation of the machine |
| 08/09/1988 | US4763056 Power supply systems for reluctance motors |
| 08/02/1988 | US4761602 Compound short-circuit induction machine and method of its control |
| 08/02/1988 | US4761591 RPM regulation of an electromotor |
| 07/27/1988 | CN88100365A Controlling apparatus of elevator |
| 07/26/1988 | US4760321 AC motor drive apparatus |
| 07/19/1988 | US4758938 PWM inverter controller for starting and driving an AC motor |
| 07/19/1988 | US4758771 Apparatus for driving AC motor |
| 07/12/1988 | US4757248 Induction motor torque control system |
| 07/12/1988 | US4757240 Apparatus for controlling electric vehicle using induction motor |
| 07/06/1988 | EP0273899A1 Pulse width modulation inverter |
| 07/06/1988 | EP0273052A1 Device for detecting the rotational position of rotor of motor |
| 06/21/1988 | US4752725 Control apparatus for three-phase induction motor |
| 06/15/1988 | EP0270689A1 Three-phase ac motor controller |
| 06/14/1988 | US4751447 AC motor speed control apparatus |
| 06/08/1988 | EP0142563B1 System of controlling synchronous motor |
| 06/07/1988 | US4749933 Polyphase induction motor system and operating method |
| 05/31/1988 | US4748394 Control apparatus for escalator |
| 05/25/1988 | EP0267915A1 Modulation method and apparatus for static power frequency changers |
| 05/24/1988 | US4745991 Speed control apparatus for A.C. elevator |
| 05/18/1988 | EP0267548A2 Device for control of an inverter fed rotating field machine |
| 05/18/1988 | EP0267252A1 Frequency converter for the stabilized supply of asynchronous motors. |
| 05/18/1988 | CN87107660A Control system for induction motor driving electrically-propelled vehicle |
| 05/11/1988 | EP0266598A2 Electrical servo-control |
| 05/10/1988 | US4743828 Electric drive system |
| 05/10/1988 | US4742892 Control apparatus for elevator |
| 05/05/1988 | DE3637480A1 Electric servo drive |
| 05/05/1988 | DE3637479A1 Servodrive having an AC machine |
| 05/04/1988 | EP0265867A2 Apparatus for controlling power converters |
| 05/04/1988 | CN87107172A Controller of electric power convertor |
| 04/26/1988 | US4740881 Simultaneous recovery commutation current source inverter for AC motors drives |
| 04/26/1988 | CA1235733A1 Positioning indexing control device for inverter apparatus |
| 04/20/1988 | CN87106844A Control arrangement for induction motor |
| 04/19/1988 | US4738118 Air conditioner |
| 04/06/1988 | EP0263060A1 Electrical asynchronous machine supplied by a pulsed converter having a short-circuited rotor |
| 04/05/1988 | US4736148 AC motor control method and its control apparatus |
| 04/05/1988 | US4735517 Printer having flux regulator |
| 03/30/1988 | EP0261689A2 Speed control system for DC motor |
| 03/29/1988 | US4734633 Speed control apparatus for a synchronous motor |
| 03/24/1988 | WO1988002195A1 Inverter |
| 03/22/1988 | EP0203145A4 Microprocessor speed controller. |
| 03/15/1988 | US4731572 Precision electronic speed controller for an alternating-current |
| 03/10/1988 | DE3729932A1 Drive for a textile machine |
| 03/02/1988 | EP0257820A2 Feedback control system for producing PWM control signals |
| 03/01/1988 | US4729087 Inversion process and apparatus |
| 03/01/1988 | CA1233509A1 Twelve pulse ac motor drive |
| 02/25/1988 | WO1988001449A1 Motor control apparatus |
| 02/23/1988 | US4727468 Digital PWM control circuit |
| 02/23/1988 | US4727305 Multi-function control system for an induction motor drive |
| 02/18/1988 | DE3627294A1 Method for producing pulse-width-modulated signals for a converter, and a circuit arrangement for carrying out the method |
| 02/11/1988 | DE3626812A1 Arrangement for adjusting the rotation speed of a single-phase or multi-phase induction machine |
| 02/03/1988 | CN87105236A Induction motor control apparatus |
| 02/02/1988 | US4723201 Control apparatus for pulse width modulation inverters |
| 02/02/1988 | US4723103 Control equipment for an electro-magnetic linear motor |
| 01/27/1988 | EP0254310A2 Induction motor control apparatus |
| 01/27/1988 | EP0254290A2 Method and apparatus for controlling a PWM inverter |
| 01/27/1988 | EP0124619B1 Controller for ac motor |
| 01/26/1988 | US4722042 Method of controlling current of inverter for optimum setting of switching modes |
| 01/26/1988 | US4721897 Reactive power processing circuit for a current source GTO invertor |