| 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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| 01/26/1988 | US4721892 Power supply apparatus for linear motor |
| 01/26/1988 | US4721861 Turbine helper drive apparatus |
| 01/20/1988 | EP0253787A2 A method for controlling brushless d.c. motors and apparatus for carrying out the method |
| 01/19/1988 | USRE32579 Motor operating parameter sensing apparatus |
| 01/14/1988 | WO1988000409A2 Power circuit for switching the number of poles on the rotor of synchronous machines by using rotative diodes |
| 01/07/1988 | EP0104209B1 Central heating circulation pump for alternating current and system comprising such a pump |
| 12/23/1987 | EP0250047A2 Tri-state switching controller for reciprocating linear motors |
| 12/23/1987 | EP0249995A1 Head positioning system for floppy disk drives |
| 12/22/1987 | US4714878 Apparatus for forming the actual value of a torque in a three-phase synchronous machine with current-block feeding |
| 12/22/1987 | US4714039 Sewing machine driving system |
| 12/17/1987 | WO1987007791A1 Process and apparatus to control synchronous motors, servomotors in particular |
| 12/16/1987 | EP0249020A2 Adaptative control technique for a dynamic system |
| 12/15/1987 | US4713743 Load-commutated inverter and synchronous motor drive embodying the same |
| 12/15/1987 | US4713594 Start-up control for switched reluctance motor |
| 12/09/1987 | EP0248747A1 Control equipment for the electric driving motor of a load-handling device |
| 12/02/1987 | EP0247650A2 Motor speed control system |
| 12/02/1987 | EP0247352A1 Brushless exciter for a synchronous machine |
| 11/25/1987 | EP0246326A1 Method and apparatus for controlling torque of a servo motor |
| 11/24/1987 | US4709317 Inverting apparatus |
| 11/19/1987 | EP0245395A1 Control circuit. |
| 11/19/1987 | DE3616221A1 Electrical machine |
| 11/17/1987 | US4707650 Control system for switched reluctance motor |
| 11/10/1987 | US4706180 Pulse width modulated inverter system for driving single phase a-c induction motor |
| 11/03/1987 | US4704569 Dynamoelectric machine excitation system with improved gate module |
| 10/28/1987 | EP0242456A1 Reluctance motor with electronically connected stator windings |
| 10/27/1987 | US4703248 Switching arrangement for full-wave power control which is insensitive to mains voltage fluctuations |
| 10/27/1987 | US4703246 Control method and apparatus for synchronous motor |
| 10/27/1987 | US4703245 Method and apparatus for controlling permanent magnet synchronous motor by using pulse width modulation |
| 10/14/1987 | EP0241425A1 Power control with overload protection for a drilling tool |
| 10/13/1987 | US4700189 Linear resolver |
| 10/06/1987 | US4698576 Tri-state switching controller for reciprocating linear motors |
| 09/30/1987 | EP0239333A2 Wide bandwidth linear motor system |
| 09/30/1987 | EP0238509A1 Solenoid driver control unit. |
| 09/30/1987 | CN87100351A Method of controlling transducer arrangement |
| 09/29/1987 | US4697127 Adaptive control technique for a dynamic system |
| 09/24/1987 | WO1987005755A1 Device for detecting the rotational position of rotor of motor |
| 09/23/1987 | EP0237717A2 Speed control of an electrical motor |
| 09/22/1987 | US4695939 Three-phase exciter for synchronous machines |
| 09/22/1987 | US4695783 Induction motor control apparatus and method |
| 09/17/1987 | DE3607670A1 Rotation speed controller for electric motor drives for tools |
| 09/10/1987 | DE3607162A1 AC motor especially for circulation pumps |
| 09/01/1987 | US4691155 Automatic load seeking control for a motor |
| 08/25/1987 | US4689530 Power supply apparatus for linear motor |
| 08/19/1987 | EP0232542A1 Electronic control and regulating device |
| 08/12/1987 | EP0128182B1 Method and apparatus for automatically setting the demand phase lag input to an induction-motor power factor controller |
| 08/04/1987 | US4684867 Regenerative unipolar converter for switched reluctance motors using one main switching device per phase |
| 07/28/1987 | US4683413 Reducing power consumption and monitoring synchronous running of three-phase electric motors |
| 07/23/1987 | DE3701208A1 Control method for an invertor |
| 07/21/1987 | US4682094 Control system for a power converter driving a synchronous motor |
| 07/21/1987 | US4682093 Power supply systems for inductive elements |
| 07/21/1987 | US4680827 Vacuum cleaner |
| 07/14/1987 | US4680667 Solenoid driver control unit |
| 07/01/1987 | EP0227014A1 Turbine helper drive apparatus |
| 07/01/1987 | CN86107955A Control device for sewing machine |
| 07/01/1987 | CN86106908A Induction motor control apparatus and method |
| 06/30/1987 | CA1223632A1 Electromagnetic actuator system |
| 06/24/1987 | EP0226355A2 Actuator access control system |
| 06/16/1987 | US4673860 Speed control circuit for AC motor |
| 06/10/1987 | CN86107483A Driving arrangement for ac motor |
| 06/09/1987 | US4672291 Variable-speed electrical machine |
| 06/04/1987 | DE3541639A1 Device for stabilizing the rotation speed of a process machine which is driven by a commutator/series-wound motor |
| 06/02/1987 | US4670699 Capacity-movement model AC inductive motor switch-changeover capacity-type speed control circuit |
| 06/02/1987 | US4670696 Variable speed variable reluctance electrical machines |
| 05/26/1987 | CA1222298A1 Reactance-commutated high resolution servo motor system |
| 05/21/1987 | WO1987003151A1 Control circuit |
| 05/19/1987 | CA1222021A1 Method and apparatus for controlling pwm inverters |
| 05/14/1987 | DE3538949A1 Entstoerschaltung Suppression circuit |
| 05/12/1987 | US4665349 Apparatus for controlling the running of carriage |
| 05/07/1987 | WO1987002841A1 Method and apparatus for controlling torque of a servo motor |
| 05/07/1987 | WO1987002840A1 Interference suppression circuit |
| 05/05/1987 | US4663576 Automatic controller for magnetic jack type control rod drive mechanism |
| 05/05/1987 | US4662185 System of controlling refrigerator temperature |
| 05/05/1987 | CA1221400A1 Controlling system for a pole change electric motor |
| 04/28/1987 | US4661756 Servomotor control systems |
| 04/21/1987 | US4659975 Remote speed controller for a motor |
| 04/21/1987 | US4659973 Brushless exciter for controlling excitation of a synchronous machine |
| 04/21/1987 | CA1220840A1 Electronic control for a domestic appliance |
| 04/08/1987 | EP0217216A2 Suction cleaner |
| 04/08/1987 | EP0217201A2 Electronic circuit for floor cleaning apparatus with an electric motor driven brush device |
| 04/07/1987 | US4656410 Construction of single-phase electric rotating machine |
| 03/31/1987 | US4654572 Load-commutated inverter for operating synchronous motor |
| 03/26/1987 | WO1987001765A1 Solenoid driver control unit |
| 03/24/1987 | US4652800 Moving object stop control method by a linear motor |
| 03/18/1987 | EP0126779B1 Ac motor control system |
| 03/17/1987 | US4651079 Pulse width modulated inverter system for driving single phase a-c induction motor at a constant voltage/frequency ratio |
| 03/17/1987 | US4651069 Back-emf brushless d.c. motor drive circuit |
| 03/12/1987 | WO1987001530A1 Electrical drive circuit for a variable-speed switched reluctance motor |
| 03/12/1987 | DE3532195A1 Electronic circuit for a phase-gating controller |
| 03/10/1987 | US4649331 Flux-weakening regime operation of an interior permanent magnet synchronous motor |
| 03/03/1987 | CA1218694A1 Alternating-current machine drive |
| 02/25/1987 | EP0211011A1 Circuit for regulating the rotational speed of a series motor. |
| 02/17/1987 | US4644242 Controlling system for a pole change electric motor |
| 02/05/1987 | DE3526598A1 Combination switch for the rotation-speed control of a DC motor or universal motor |
| 01/29/1987 | WO1987000705A1 Motor controller |
| 01/27/1987 | CA1217260A1 Airflow control system |
| 01/21/1987 | EP0208944A2 Circuit arrangement for the power control of full waves |
| 01/21/1987 | EP0208859A1 Three-phase excitation for synchronons machines |
| 01/21/1987 | EP0208847A1 Moment feedback value formation device for a threephase synchronous machine with current block supply |
| 01/20/1987 | US4638226 Speed control system with feedback and soft-start |
| 01/20/1987 | CA1216917A1 Speed regulator for power tool |