| Patents for H02P 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage (13,284) |
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| 03/31/1993 | EP0454697B1 Device for controlling antiductors |
| 03/31/1993 | CN1070382A Controlling apparatus for elevator |
| 03/30/1993 | US5198742 Method of preventing the stalling of an asynchronous machine |
| 03/23/1993 | US5196769 Motor control device |
| 03/18/1993 | WO1993005557A1 Motor controller |
| 03/18/1993 | DE4130532A1 Squirrel cage induction motor speed control method - having triac-controlled AC supply with suppression of regular periods of waveform and phase gate control of half-waves |
| 03/17/1993 | EP0218729B1 Method of controlling a three-phase induction motor |
| 03/14/1993 | WO1993006652A1 Minimization of gto gate driver losses when antiparallel diode conduct |
| 03/14/1993 | CA2096243A1 Minimization of gto gate driver losses when antiparallel diode conduct |
| 02/17/1993 | CN1019908C Safety apparatus for elevator |
| 02/16/1993 | US5187419 Electric motor control apparatus and method |
| 02/10/1993 | EP0313671B1 Temperature compensative revolution speed control for an induction motor |
| 02/10/1993 | EP0278987B1 Motor control apparatus |
| 02/03/1993 | EP0525999A2 Synchronous rectification method for reducing power dissipation in motor drivers in PWM mode |
| 02/02/1993 | US5184056 Method of regulating the torque response of a multiphase electronically commutated electric motor |
| 01/28/1993 | DE4224555A1 Output voltage error compensation device for PWM inverter - discriminates polarity of output currents for control of modulator and timer of short-circuit current protection |
| 01/27/1993 | EP0355115B1 Process for regulating the speed of rotation of an electric motor |
| 01/27/1993 | EP0233948B1 Method of controlling a three-phase induction motor |
| 01/26/1993 | US5182508 Reconfigurable AC induction motor drive for battery-powered vehicle |
| 01/07/1993 | EP0521467A2 Drive control apparatus for air conditioner |
| 01/07/1993 | DE4119902A1 Drive unit for washing machines etc. - has three=phase asynchronous motor with at least 2 slots per pole and phase |
| 01/07/1993 | DE4119901A1 Induction motor rotary speed control - uses coil reversal according to working programme and loading momentum to align motor currents |
| 01/06/1993 | CN1067632A Apparatus for operating elevators when electricity is ceased |
| 01/05/1993 | US5177678 Inverter apparatus for preventing an overincrease of output frequency |
| 12/30/1992 | EP0207152B1 Solid phase diffusion assay |
| 12/29/1992 | US5175483 Method and an apparatus for computing moment of inertia in a motor speed controller, and a speed control method and apparatus for a motor |
| 12/29/1992 | US5175479 Moving body position control apparatus and signal reproducing apparatus |
| 12/23/1992 | EP0246326B1 Method and apparatus for controlling torque of a servo motor |
| 12/22/1992 | US5173848 Motor controller with bi-modal turnoff circuits |
| 12/16/1992 | EP0518244A2 Electric current measurement apparatus for a solid state motor controller |
| 12/08/1992 | US5170317 Multilayer capacitor |
| 12/02/1992 | EP0515469A1 Method and apparatus for controlling an ac induction motor by indirect measurement of the air-gap voltage. |
| 12/02/1992 | EP0324806B1 Switch arrangement for controlling motors |
| 12/02/1992 | CN1066754A Inverter arrangement and ac motor driving system |
| 12/02/1992 | CN1019289B Controlling apparatus of elevator |
| 12/01/1992 | US5168204 Automatic motor torque and flux controller for battery-powered vehicle drive |
| 11/24/1992 | US5166593 Closed-loop torque feedback for a universal field-oriented controller |
| 11/19/1992 | EP0513994A2 An actuator and a valve actuator system |
| 11/12/1992 | WO1992020142A1 Process for operating permanently excited single-phase alternating current machines |
| 11/11/1992 | EP0512531A2 Inverter arrangement and AC motor driving system |
| 11/11/1992 | EP0512372A2 Electric motor control apparatus and method |
| 11/11/1992 | CN1066041A Motor driven door device |
| 11/10/1992 | US5162727 Method and apparatus of determining the stator flux estimate of an electric machine |
| 11/10/1992 | US5162717 Loom operating apparatus and method |
| 11/03/1992 | US5161073 Low power disk drive spindle motor controller |
| 11/03/1992 | US5160878 Induction motor controller providing temperature compensation |
| 10/28/1992 | EP0510723A1 Control system for a multiphase synchronous machine |
| 10/27/1992 | US5159657 Method and apparatus for controlling single or polyphase a.c. power controllers |
| 10/27/1992 | US5159542 Selectable hysteresis controller for pulse width modulated inverter |
| 10/15/1992 | DE4212027A1 Digital 3=phase pulse duration modulation signal generator for motor controller - uses comparison of reversible counter count values with stored reference values for each motor phase |
| 10/14/1992 | EP0360854B1 Two-state, bilateral, single-pole, double-throw, half-bridge power-switching apparatus and power supply means for such electronic power switching apparatus |
| 10/14/1992 | EP0273052B1 Device for detecting the rotational position of rotor of motor |
| 10/13/1992 | US5155675 Method of controlling an inverter |
| 10/13/1992 | US5155671 Power converter with current-type inverter |
| 10/13/1992 | US5155305 Delayed start of elevator car deceleration and creep using VVVF technology |
| 10/07/1992 | EP0507697A1 Control of electric motor with stator winding, especially for domestic appliance |
| 10/07/1992 | CN1018598B Power converter with current-type inverter |
| 10/06/1992 | US5153491 Main spindle control method |
| 10/06/1992 | US5153489 Electric current measurement apparatus for a solid state motor controller |
| 10/01/1992 | DE4110225A1 Control method for inverter with induction machine - varying torque generating demand value with ripple on DC intermediate circuit voltage |
| 09/30/1992 | EP0505591A1 Method and circuit arrangement for the regulation of a two-dimensional load vector by a digital actuator with limited commutation frequency |
| 09/29/1992 | US5151853 Cycloconverter and the method of controlling the same |
| 09/29/1992 | US5151642 Apparatus for controlling an electric motor |
| 09/22/1992 | US5150029 Method and apparatus for controlling the magnetic flux of an induction motor |
| 09/16/1992 | EP0503879A2 Synchronous motor with permanent magnets and motor system |
| 09/16/1992 | CN1064575A Ac motor drive system |
| 09/16/1992 | CN1018315B Electric power convertor with pulse restrainer |
| 09/09/1992 | EP0502226A1 Method and apparatus for simulating the currents in an inverter fed rotating field machine |
| 09/09/1992 | CN1064378A Ac motor drive system |
| 09/08/1992 | US5146148 Process and a device for changing the effective speed of a polyphase asynchronous motor and a suitable motor system for the application of the process |
| 09/08/1992 | US5146147 Ac motor drive system |
| 09/08/1992 | US5146146 Method and device for operating electric drives |
| 09/03/1992 | WO1992015148A1 Four quadrant motor controller |
| 09/02/1992 | EP0501634A2 AC motor drive system |
| 09/02/1992 | EP0500948A1 System for driving induction motor |
| 09/02/1992 | EP0500528A1 Process for correcting a detected faulty actual value of a signal with harmonic vibrations and circuit arrangement for implementing this process. |
| 09/01/1992 | US5144216 High speed flux feedback for tuning a universal field oriented controller capable of operating in direct and indirect field orientation modes |
| 08/26/1992 | EP0500431A1 Angle sensor, in particular for rotating machines at very high speed |
| 08/26/1992 | EP0500121A2 Controller for induction motor |
| 08/26/1992 | EP0314669B1 Switched capacitor induction motor drive |
| 08/19/1992 | EP0499470A2 AC motor drive system |
| 08/18/1992 | US5140248 Open loop motor control with both voltage and current regulation |
| 08/18/1992 | US5140245 Pmg-based position sensor and synchronous drive incorporating same |
| 08/12/1992 | EP0497783A1 Variable speed ac drive control. |
| 08/11/1992 | US5138242 Inverse electromotive force eliminating device for motor utilizing MOS-FET |
| 08/06/1992 | DE4102893A1 Pulse width modulated three=phase current converter for washing machine motor - has transistors clocked by fundamental frequency of output voltage in half bridges with diodes in one half |
| 08/05/1992 | CN1017766B Control arrangement for inverter current |
| 08/04/1992 | US5136216 Ac motor drive system |
| 07/23/1992 | DE4101341A1 Frequency transverter for operating polyphase induction motor - with control electronics to set operating frequency and voltage according to ideal motor speed |
| 07/21/1992 | US5132599 Velocity control apparatus |
| 07/14/1992 | US5130617 Inverter control device for driving an elevator |
| 07/07/1992 | CA1304775C Method and apparatus for the digital determination of the field angle of a rotating-field machine |
| 06/30/1992 | US5126642 Variable speed motor control |
| 06/24/1992 | EP0491201A2 Method for producing the speed reference for a crane motor |
| 06/23/1992 | US5124606 Dual rotor with continuous/positioning reverse controls |
| 06/23/1992 | CA1304122C Motor controller with optical scr's |
| 06/21/1992 | WO1992011432A1 Monitoring apparatus |
| 06/21/1992 | CA2098597A1 Monitoring apparatus |
| 06/17/1992 | EP0490670A2 Induction motor control apparatus |
| 06/17/1992 | EP0489970A1 Method and device for operating electric drives |