| Patents for H02P 25 - Arrangements or methods for the control of ac-motors characterised by the kind of ac-motor or by structural details (7,591) |
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| 09/13/1984 | WO1984003596A1 Method of controlling synchronous motor |
| 09/13/1984 | WO1984003572A1 Servo driving unit |
| 09/11/1984 | CA1174269A1 Energy saver control for single phase motors |
| 08/28/1984 | CA1173495A1 Energy economizer for induction motors |
| 08/21/1984 | US4467257 Multiple speed induction motor |
| 08/21/1984 | US4467233 Self starting reluctance motor |
| 08/14/1984 | US4465962 Permanent split capacitor single phase electric motor system |
| 08/14/1984 | US4465957 Circuit and method for controlling speed of an alternating current 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 | US4463303 Six pole/eight pole single-phase motor |
| 07/31/1984 | US4463300 Linear motor digital servo control |
| 07/31/1984 | US4463290 Induction type positioning system |
| 07/31/1984 | CA1171907A1 Pulsed thyristor trigger control circuit |
| 07/17/1984 | US4460862 Electronic speed and slowing down control with intrinsic safety |
| 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 |
| 07/11/1984 | EP0113008A1 Magnetic actuator |
| 07/10/1984 | US4459535 H-Switch start-up control and frequency converter for variable speed AC motor |
| 07/10/1984 | US4459530 Electric rotating apparatus |
| 07/05/1984 | WO1984002619A1 System for controlling synchronous motor |
| 07/03/1984 | US4458192 A.C. Motor drive apparatus |
| 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 | US4455521 Energy saver control for single phase motors |
| 06/19/1984 | US4455520 Method and means for stable operation of a synchronous motor |
| 06/19/1984 | US4455512 System for linear motor control |
| 06/13/1984 | EP0110561A1 Rotary machine system having an electric motor controlled by a modulated exciting voltage |
| 06/12/1984 | US4454459 Method of controlling the speed of a drill, hammer-drill, or rotary hammer and apparatus therefor |
| 06/12/1984 | US4454457 Power supply system for a linear motor |
| 06/07/1984 | WO1984002235A1 Ac motor control system |
| 06/07/1984 | WO1984002234A1 Servomotor control system |
| 05/29/1984 | US4451771 Apparatus for controlling AC motor |
| 05/22/1984 | US4450399 Induction motor |
| 05/22/1984 | US4450396 Electrically controlled synchronous machine |
| 05/22/1984 | US4450395 System for controlling synchronous motors |
| 05/22/1984 | CA1167913A1 Means for limiting power dissipated in an a.c. motor |
| 05/16/1984 | EP0108732A1 A device for controlling a reluctance motor |
| 05/15/1984 | US4449087 Flux feedback firing control for a load commutated inverter |
| 05/08/1984 | US4447788 Method for optimizing the power input of a plurality of hysteresis motors connected in parallel |
| 05/02/1984 | EP0107539A1 Control circuit for a synchronous motor with two armature windings |
| 05/02/1984 | EP0107351A2 Synchronous motor control |
| 05/01/1984 | US4446415 Automatic load seeking control for a pumpjack motor |
| 05/01/1984 | US4446414 Terminal voltage limit regulator for a load commutated inverter |
| 04/24/1984 | US4445076 Control system for synchronous motor employed as servomotor |
| 04/18/1984 | EP0105852A1 A reluctance motor |
| 04/17/1984 | US4443749 Multiple speed split-phase induction motor |
| 04/17/1984 | US4443748 Method of controlling speed of at least one induction motor and device therefor |
| 04/17/1984 | US4443747 Transitioning between multiple modes of inverter control in a load commutated inverter motor drive |
| 04/04/1984 | EP0104909A2 Servomotor control method and apparatus therefor |
| 04/04/1984 | EP0104209A1 Central heating circulation pump for alternating current and system comprising such a pump. |
| 03/28/1984 | EP0103821A2 Motor generator operating according to the reluctance principle |
| 03/14/1984 | EP0102659A1 Washing machine motor speed control circuit |
| 03/06/1984 | CA1163316A1 Three phase power factor controller |
| 03/06/1984 | CA1163315A1 Chopping with reversal by other phases |
| 02/15/1984 | EP0036414B1 Regulating electronic device |
| 02/14/1984 | US4431958 Control apparatus for single phase AC induction motor |
| 02/07/1984 | US4430681 Overload protection arrangement for an electric motor, especially of a hand-held power tool |
| 02/07/1984 | US4430605 Motor control system utilizing switched controller |
| 02/07/1984 | US4430576 Remote load selector circuit and method |
| 01/24/1984 | US4427934 Current limiter for a load commutated inverter |
| 01/24/1984 | US4427933 Load commutated inverter gating control system and motor drive with such control system |
| 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 |
| 01/04/1984 | EP0097606A2 Method of securing sleeve bearing lubrication of a multiple speed rotational device, control arrangement for carrying out said method, and use of said method and control arrangement in regulating a fan |
| 12/20/1983 | US4422028 Brushless excitation system with a holding current resistor |
| 12/06/1983 | US4419615 Method of controlling pulse width modulated inverter for use in induction motor drive |
| 11/30/1983 | EP0095073A1 Controllable-phase cut-off circuit for electrical motors |
| 11/22/1983 | US4417193 Method and apparatus for controlling alternating current motors |
| 11/16/1983 | EP0093912A1 Linear motor |
| 11/15/1983 | US4415911 Recording apparatus |
| 11/08/1983 | US4414500 Variable motor speed control |
| 11/08/1983 | US4413950 Hall switch pump |
| 11/01/1983 | US4413218 Automatic load seeking control for a multitorque motor |
| 11/01/1983 | US4413216 Static frequency changer for feeding synchronous machines |
| 11/01/1983 | US4413214 Vented pneumatic foot controller |
| 11/01/1983 | CA1156306A1 Motor control circuit |
| 10/26/1983 | EP0091927A1 An arrangement for driving pumps and like loads |
| 10/25/1983 | US4412158 Speed control circuit for an electric power tool |
| 10/25/1983 | CA1155950A1 Digital control system for electric motors in power tools and the like |
| 10/25/1983 | CA1155911A1 Electronic damping of stepper motor |
| 10/19/1983 | EP0091869A1 Pumping unit such as a circulator for a central-heating installation with a predetermined hydraulic calibration line |
| 10/18/1983 | US4410846 Electric tool with microcomputer |
| 10/18/1983 | CA1155492A1 Apparatus for maintaining synchronism of an inverter-synchronous machine drive system at light or zero machine loads |
| 10/13/1983 | WO1983003461A1 Low power consumption heat conveyor agent circulation pump,parti cularly for heat pump heatings |
| 10/11/1983 | US4409528 Motor speed control circuit providing armature current sensing and feedback action for each half cycle and control circuit reducing energy consumption of induction motors when running under no load and light loading |
| 10/04/1983 | US4408150 Speed control system and method for electric motor |
| 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 |
| 09/13/1983 | US4404671 Linear drive motor control system |
| 08/31/1983 | EP0087115A1 Power and control apparatus of a synchronous machine running variable speed |
| 08/17/1983 | EP0086114A1 Electrical tool having speed control circuit |
| 08/17/1983 | EP0085871A1 Method for increasing the maximum speed of a synchronous motor with a given exciting field power and terminal voltage and apparatus therefor |
| 08/16/1983 | CA1152195A1 Anti-kickback power tool control |
| 08/10/1983 | EP0085541A1 Synchronous motor drive apparatus |
| 07/27/1983 | EP0084367A2 Method and apparatus for controlling an AC motor |
| 07/19/1983 | US4394610 Adaptive reference voltage generator for firing angle control of line-commutated inverters |
| 07/19/1983 | US4394606 Speed control circuit for electric motor |
| 07/05/1983 | US4392093 Electronic control and regulating system |
| 06/28/1983 | US4390827 Linear motor |