| 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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| 08/28/1984 | US4468725 Direct AC converter for converting a balanced AC polyphase input to an output voltage |
| 08/28/1984 | CA1173495A1 Energy economizer for induction motors |
| 08/21/1984 | US4467262 Polyphase motor drive system with balanced modulation |
| 08/21/1984 | US4467261 Variable speed motor drive system |
| 08/21/1984 | US4467258 Power factor correction for variable speed drive |
| 08/14/1984 | US4465961 For an alternating current motor |
| 08/07/1984 | CA1172308A1 Method and circuit arrangment for controlling the r.p.m. of a three phase motor |
| 08/01/1984 | EP0114276A1 Starting system for chopper controlled motor-commutated thyristor inverter |
| 08/01/1984 | EP0114275A1 Voltage-controlled, inverter-motor system |
| 08/01/1984 | EP0114274A1 Control and stabilizing system for damperless synchronous motor |
| 07/31/1984 | CA1171907A1 Pulsed thyristor trigger control circuit |
| 07/25/1984 | EP0113951A1 Phase detector for three-phase power factor controller |
| 07/25/1984 | EP0113848A2 Data in- and output device for a drive control device operated by a digital computer |
| 07/25/1984 | EP0113735A1 Method and device for controlling the rotation speed of a pump driving asynchronous motor. |
| 07/24/1984 | US4461988 Apparatus for controlling an electrical vehicle drive system |
| 07/24/1984 | US4461985 Speed reducing control system for a polyphase electric motor |
| 07/24/1984 | CA1171454A1 Energy saving motor speed controller |
| 07/17/1984 | US4460861 Control system for machine commutated inverter-synchronous motor drives |
| 07/17/1984 | US4460860 Method and apparatus for increasing the maximum speed of rotation of a synchronous machine with a given excitation field strength and terminal voltage |
| 07/10/1984 | US4459534 Method for controlling induction motor and apparatus therefor |
| 07/10/1984 | US4459533 Variable slip drive system for induction motor |
| 07/10/1984 | US4459528 Phase detector for three-phase power factor controller |
| 07/05/1984 | WO1984002619A1 System for controlling synchronous motor |
| 07/03/1984 | US4458305 Multi-phase transistor/diode bridge circuit |
| 07/03/1984 | US4458194 Method and apparatus for pulse width modulation control of an AC induction motor |
| 07/03/1984 | US4458193 Method and apparatus for controlling an AC induction motor |
| 07/03/1984 | US4458192 A.C. Motor drive apparatus |
| 06/26/1984 | US4456865 High torque servo positioner using 3 phase variable frequency constant torque controller |
| 06/21/1984 | WO1984002404A1 Method and apparatus for automatically setting the demand phase lag input to an induction-motor power factor controller |
| 06/19/1984 | US4455522 Current source inverter bed induction motor drive |
| 06/07/1984 | WO1984002235A1 Ac motor control system |
| 06/07/1984 | WO1984002234A1 Servomotor control system |
| 06/05/1984 | US4452402 Electric control for yarn feeding devices |
| 05/29/1984 | US4451771 Apparatus for controlling AC motor |
| 05/29/1984 | US4451112 Method and apparatus for controlling AC motor |
| 05/23/1984 | EP0109076A2 Speed control apparatus of polyphase induction motors |
| 05/22/1984 | CA1167914A1 Static converter set buffer circuit adapter |
| 05/22/1984 | CA1167913A1 Means for limiting power dissipated in an a.c. motor |
| 05/22/1984 | CA1167912A1 Commutating capacitor charge detection circuit and method |
| 05/15/1984 | US4449088 Commutation failure correction scheme for a controlled current inverter |
| 05/10/1984 | WO1984001865A1 Controller for ac motor |
| 05/08/1984 | US4447787 Device for the field-oriented operation of a converter-fed asynchronous machine |
| 05/08/1984 | US4447786 Waveform synthesizer and motor controller |
| 05/08/1984 | US4446706 Washing machine |
| 05/08/1984 | CA1167147A1 Marine drive system |
| 05/02/1984 | EP0107629A1 An electrically driven hammer machine |
| 05/02/1984 | EP0107539A1 Control circuit for a synchronous motor with two armature windings |
| 05/02/1984 | EP0107351A2 Synchronous motor control |
| 05/01/1984 | US4446414 Terminal voltage limit regulator for a load commutated inverter |
| 04/26/1984 | WO1984001677A1 Controller for motor |
| 04/18/1984 | EP0105511A2 Control method for induction motors |
| 04/17/1984 | US4443750 Energy saving motor speed controller |
| 04/17/1984 | US4443747 Transitioning between multiple modes of inverter control in a load commutated inverter motor drive |
| 04/11/1984 | EP0105215A1 Control apparatus for AC motors |
| 04/10/1984 | US4442394 Inverter circuit for operating a speed-controllable asynchronous motor |
| 04/10/1984 | US4442393 Apparatus and method for determining the operation of an induction motor |
| 04/04/1984 | EP0104909A2 Servomotor control method and apparatus therefor |
| 04/03/1984 | US4441064 Twelve-pulse operation of a controlled current inverter motor drive |
| 04/03/1984 | CA1164933A1 Variable speed electric machine having controlled magnetic flux density |
| 04/03/1984 | CA1164932A1 Method and apparatus for controlling an ac induction motor |
| 03/28/1984 | EP0103821A2 Motor generator operating according to the reluctance principle |
| 03/20/1984 | US4438376 Variable slip controller for an AC motor |
| 03/15/1984 | WO1984001063A1 Improved induction motor controller |
| 03/14/1984 | EP0102614A2 Method and apparatus for controlling PWM inverter |
| 03/13/1984 | US4437051 Method and apparatus for controlling induction motor |
| 03/13/1984 | US4437050 Stabilizing circuit for controlled inverter-motor system |
| 03/06/1984 | CA1163316A1 Three phase power factor controller |
| 03/06/1984 | CA1163315A1 Chopping with reversal by other phases |
| 02/28/1984 | US4434393 Induction motor control system |
| 02/15/1984 | EP0100390A2 A method of driving the impeller of a liquid pump by means of a brushless A.C. motor, and a liquid pump for carrying out the method |
| 02/14/1984 | US4431957 Method and apparatus for generating signals representing motor flux in an AC motor |
| 02/14/1984 | US4431956 For an AC motor |
| 02/07/1984 | US4430605 Motor control system utilizing switched controller |
| 02/02/1984 | WO1984000451A1 Method and device for controlling the rotation speed of an asynchronous motor |
| 02/01/1984 | EP0099803A1 Electrical appliance for controlling rotating asynchronous machines |
| 01/24/1984 | US4427934 Current limiter for a load commutated inverter |
| 01/17/1984 | US4426614 Pulsed thyristor trigger control circuit |
| 01/17/1984 | US4426611 For controlling power supplied to an AC load from an AC source |
| 01/17/1984 | US4426610 Induction motor control system |
| 01/10/1984 | CA1160280A1 Inverter-motor system with different control characteristics for inverter voltage and frequency |
| 01/03/1984 | US4424475 Apparatus for controlling a static AC/AC thyristor converter which feeds a synchronous rotating machine at a variable frequency |
| 01/03/1984 | US4424474 Method and circuit arrangement for controlling the r.p.m. of a three-phase motor |
| 12/13/1983 | US4420719 Cross-tied current regulator for load commutated inverter drives |
| 12/13/1983 | US4420718 Control system for induction motor using inverter for AC power supply |
| 12/13/1983 | CA1158712A1 Reversible inverter system having improved control scheme |
| 12/06/1983 | US4419615 Method of controlling pulse width modulated inverter for use in induction motor drive |
| 11/23/1983 | EP0094767A1 Devices for generating three-phase PWM waveforms for control of induction motors |
| 11/22/1983 | US4417193 Method and apparatus for controlling alternating current motors |
| 11/16/1983 | EP0094109A1 Lift drive control |
| 11/16/1983 | EP0093929A1 Method of controlling the magnetic flux of an asynchronous machine, and apparatus therefor |
| 11/09/1983 | EP0093615A1 Variable speed rotary electrical machines |
| 11/02/1983 | EP0092937A1 Three phase variable frequency constant torque controllers for high torque servo positioners |
| 10/26/1983 | EP0091927A1 An arrangement for driving pumps and like loads |
| 10/19/1983 | EP0091589A2 Apparatus for controlling an induction motor |
| 10/11/1983 | US4409534 Microcomputer-based pulse width modulated inverter fed machine drive system |
| 10/11/1983 | CA1155205A1 Variable control circuit having a timed bypass |
| 09/28/1983 | EP0089673A1 A circuit and a method for processing amplitude and phase variable multiphase signals which are required as current or voltage reference to drive synchronous motors |
| 09/21/1983 | EP0089208A2 A.C. motor drive apparatus |
| 09/20/1983 | US4405888 Adapter for intermediary circuit of a static converter assembly |
| 09/20/1983 | CA1154086A1 Commutating device for driving a load |