| 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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| 04/15/1999 | WO1999018652A1 Improved brushless linear motor |
| 04/15/1999 | WO1999018649A1 Linear motor compressor |
| 04/15/1999 | WO1999009646A3 Method and regulator for electrical reluctance machines |
| 04/15/1999 | DE19845044A1 Reluctance motor e.g. for vehicle and spinning machine used in textile industry |
| 04/13/1999 | US5894211 Electric machine |
| 04/13/1999 | US5894210 Control of a switched reluctance machine |
| 04/08/1999 | WO1999017009A1 Method for controlling an electro mechanical regulating device |
| 04/06/1999 | US5892349 Control circuit for two speed motors |
| 04/06/1999 | CA2159781C Apparatus for starting a switched reluctance motor |
| 04/01/1999 | DE19843924A1 Procedure for controlling motor |
| 03/30/1999 | US5889922 Drive arrangement for an electric motor |
| 03/30/1999 | US5889380 Current command type PWM inverter apparatus for driving and controlling three-phase motor based on periodical state updating timings |
| 03/30/1999 | US5889347 Reluctance machine with fractional pitch winding and drive therefore |
| 03/25/1999 | WO1999014847A1 Variable speed universal machine system |
| 03/24/1999 | EP0902918A1 Motor-regulating device and method |
| 03/23/1999 | US5886555 Pulse production circuit |
| 03/23/1999 | CA2168162C A switched reluctance motor providing rotor position detection at low speeds without a seperate rotor shaft position sensor |
| 03/23/1999 | CA2144380C An electric motor for portable machine tools |
| 03/18/1999 | WO1999013564A1 Method of and system for controlling a variable speed induction motor |
| 03/18/1999 | WO1999013563A2 A method of linearizing the performance of switched reluctance generators |
| 03/18/1999 | CA2303050A1 Method of and system for controlling a variable speed induction motor |
| 03/18/1999 | CA2303043A1 A method of linearizing the performance of switched reluctance generators |
| 03/17/1999 | CN1211104A Motor driving apparatus having back-gate-floating MOSFET for avoiding reverse current |
| 03/16/1999 | US5883490 Electric motor controller and method |
| 03/16/1999 | US5883485 Simplified control for running a switched reluctance motor |
| 03/16/1999 | US5883478 Apparatus and method for controlling vibrating equipment |
| 03/16/1999 | CA2188888C Rotor position sensing in a dynamoelectric machine using mutually energized closed coils in adjacent phases |
| 03/16/1999 | CA2158845C Brushless repulsion motor utilizing electronic switching circuits |
| 03/10/1999 | CN1042413C Elevator controller |
| 03/09/1999 | US5880571 Method of and system for controlling a variable speed induction motor |
| 03/09/1999 | US5880549 Switched reluctance rotator |
| 03/09/1999 | US5879375 Implantable device monitoring arrangement and method |
| 03/03/1999 | CN1209687A Harmonic current attenuation device for electric motor |
| 03/03/1999 | CN1042383C Electric Motor with torque detecting circuit |
| 03/02/1999 | US5877914 Amplifier output clamping scheme |
| 02/25/1999 | WO1999009646A2 Method and regulator for electrical reluctance machines |
| 02/25/1999 | WO1999009643A1 Method and system for varying and regulating a motor speed |
| 02/25/1999 | DE19838160A1 Switch over arrangement, e.g. for reluctance motor |
| 02/25/1999 | CA2300820A1 Method and regulator for electrical reluctance machines |
| 02/24/1999 | EP0898361A1 Speed control system and method for a series motor and such a motor |
| 02/18/1999 | DE19734721A1 Asynchronous motor three-phase AC drive system e.g. for electrified railway vehicles |
| 02/17/1999 | EP0897213A1 Monitoring of current in an inductive load, PWM driven through a bridge stage |
| 02/17/1999 | EP0896716A1 Pwm/linear driver for disk drive voice coil actuator |
| 02/16/1999 | US5872441 Commutation circuit for switched-reluctance motor |
| 02/16/1999 | US5872407 Linear motor |
| 02/09/1999 | US5870292 Series resonant converter for switched reluctance motor drive |
| 02/09/1999 | US5869954 Apparatus for the controlled supply of current to an electrical device |
| 02/09/1999 | CA2022960C Electronic control for an automatic washing machine with a reversing psc motor |
| 02/04/1999 | WO1999005772A1 One way interactive electric motors |
| 02/03/1999 | EP0895342A2 A control circuit for vibrating compressors |
| 02/02/1999 | US5867004 Relative angel estimation apparatus for a sensorless switched reluctance machine system |
| 02/02/1999 | US5866964 Reluctance machine with auxiliary field excitations |
| 01/27/1999 | EP0893199A2 Stationary machine tool, in particular circular sawing machine or milling machine |
| 01/27/1999 | EP0893008A1 Estimator initialization circuit and method for a sensorless switched reluctance machine system |
| 01/27/1999 | EP0893007A1 Relative angle estimation apparatus for a sensorless switched reluctance machine system |
| 01/27/1999 | EP0893006A1 Estimator lock detection circuit for a sensorless switched reluctance machine system |
| 01/27/1999 | EP0893005A1 Commutation apparatus and method for a sensorless switched reluctance machine system |
| 01/27/1999 | EP0893004A1 Improved method and apparatus for controlling a switched reluctance machine |
| 01/27/1999 | CN1206239A Starting of single-phase motors |
| 01/26/1999 | US5864477 Converter circuit for a polyphase switched inductive load |
| 01/26/1999 | US5864218 Method for controlling the switching-off process in the phase windings of a reluctance motor |
| 01/26/1999 | US5864217 Switched reluctance machine with toothed-wheel rotor sensor |
| 01/26/1999 | US5864197 Synchronous machine |
| 01/26/1999 | CA2009297C Method and apparatus for controlling single or multiphase a.c. power controllers |
| 01/20/1999 | EP0892490A1 Starting of single-phase motors |
| 01/19/1999 | US5861727 System for controlling operation of a switched reluctance motor between multi-phase operating mode and a reduced phase operating mode |
| 01/13/1999 | EP0890374A1 Exercise apparatus |
| 01/13/1999 | CN1041672C Motor capable of using high or low voltage |
| 01/12/1999 | US5859518 Switched reluctance motor controller with sensorless rotor position detection |
| 01/12/1999 | US5857496 Weaving apparatus including switched reluctance drive |
| 01/12/1999 | CA2060354C Ac motor drive system |
| 01/07/1999 | WO1999000815A1 System and method for servo control of nonlinear electromagnetic actuators |
| 01/07/1999 | EP0655175B1 Process for operating permanently excited single-phase alternating current machines |
| 01/06/1999 | CN1204182A Motor drive apparatus and motor driving method capable of simply reducing rotating speed in PWM mode |
| 01/05/1999 | US5856731 Electric screwdriver |
| 12/30/1998 | EP0887918A2 Improved phase controller for intermittently supplying an AC motor with electric power |
| 12/30/1998 | EP0887916A2 Energization controller of electric motor |
| 12/30/1998 | CN1203481A Phase controller for AC motor |
| 12/23/1998 | WO1998058446A1 Rotating electric motor system capable of vibrating and method for operating a rotating electric motor capable of vibrating |
| 12/23/1998 | EP0886370A2 Switching circuit for a reluctance machine |
| 12/23/1998 | CA2293545A1 Rotating electric motor system capable of vibrating and method for operating a rotating electric motor capable of vibrating |
| 12/22/1998 | US5852355 Output smoothing in a switched reluctance machine |
| 12/22/1998 | CA2148634C Sensorless commutation controller for a poly-phase dynamoelectric machine |
| 12/17/1998 | WO1998057419A1 Reluctance motor |
| 12/17/1998 | DE19825926A1 Reluktanzmotor Reluctance motor |
| 12/16/1998 | CN1202036A On-off controller |
| 12/16/1998 | CA2208499A1 Electrically audible motorized wheel assembly and method thereof |
| 12/15/1998 | US5850131 Process for driving electric motor-operated awnings |
| 12/09/1998 | EP0883226A2 Commutation circuit for switched-reluctance motor |
| 12/09/1998 | EP0883042A1 On-off controller |
| 12/09/1998 | EP0764078B1 Device for matching speeds of carriage units capable of moving along a rail |
| 12/08/1998 | US5847536 Motor control circuit equipped with correction means therein |
| 12/08/1998 | US5847532 Switching circuit for an inductive load |
| 12/03/1998 | DE19824240A1 Excitation control for electric motor |
| 12/03/1998 | DE19824223A1 Power change control unit |
| 12/03/1998 | DE19824201A1 Overheat protection system for circuit module |
| 12/01/1998 | US5844385 Absolute angle estimation apparatus for a sensorless switched reluctance machine system |
| 12/01/1998 | US5843129 Electrical circuit for equipment requiring redundant flow paths and method of use |
| 11/26/1998 | DE19821887A1 Converter circuit arrangement and operating procedure for multiphase induction of synchronous motors |
| 11/25/1998 | EP0879499A1 Method for powering an electronically switched variable-reluctance electric motor, and power supply circuit therefor |