| 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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| 05/14/1997 | CN1149674A Rotary compressor braked by reverse rotation |
| 05/06/1997 | US5627445 Sensing phase current in switched reluctance machines |
| 05/06/1997 | US5627444 Switched reluctance motor control |
| 05/02/1997 | EP0771066A1 Rotor position sensing in a dynamoelectric machine using coupling between machine coils |
| 05/02/1997 | EP0770757A2 Method of actuating awnings or the like by an electric motor |
| 04/30/1997 | CN1148912A Device for converting a resistance value into a control signal which depends on the resistance value, and electrical apparatus comprising such device |
| 04/23/1997 | EP0769844A1 Current control circuit for a reluctance machine |
| 04/23/1997 | EP0769221A1 Load-commutated synchronous motor drive |
| 04/23/1997 | EP0769133A1 Switched reluctance machine having unbalance forces compensation coils |
| 04/16/1997 | EP0768750A1 Switched-reluctance rotary machine |
| 04/15/1997 | US5621295 Device for driving using an electric motor comprising means for measuring the displacement of the driven body |
| 04/15/1997 | US5621294 Apparatus and method for force compensation in a variable reluctance motor |
| 04/15/1997 | US5621293 Variable-reluctance servocontrolled linear motor |
| 04/10/1997 | WO1997013317A1 Device generating three-phase position detecting signal with two coils |
| 04/10/1997 | DE19537453A1 Two-pole reluctance motor with semiconductor-switched stator winding |
| 04/08/1997 | US5619113 Reluctance-type motor |
| 04/03/1997 | WO1997012305A1 Combined motor drive and control device |
| 04/03/1997 | DE19639698A1 Electro-motor excitation system |
| 04/03/1997 | DE19536148A1 Control of speed or drive torque of induction or universal motors for heat circulation pumps |
| 04/02/1997 | EP0765542A1 Process for controlling a reluctance engine |
| 04/02/1997 | CN1034457C Rotational speed control device for an ac motor |
| 04/01/1997 | US5616995 Systems and methods for controlling a draft inducer for a furnace |
| 03/27/1997 | WO1997011524A1 Method and apparatus for control of a switched reluctance motor |
| 03/27/1997 | DE19534727A1 Switched reluctance motor e.g. for motor vehicle fans, washing machine and lawn mower drives |
| 03/27/1997 | CA2205588A1 Method and apparatus for control of a switched reluctance motor |
| 03/26/1997 | EP0765027A1 Noise reduction in a switched reluctance motor by current profile |
| 03/26/1997 | EP0764078A1 Device for matching speeds of carriage units capable of moving along a rail |
| 03/20/1997 | DE19534423A1 Starting and running control device e.g. for single-phase electric pump motor with permanent magnet rotor |
| 03/19/1997 | EP0763883A2 Reduced noise controller for a switched reluctance machine |
| 03/13/1997 | WO1997009775A1 Synchronous motor |
| 03/06/1997 | DE19532377A1 Supply of AC load especially AC motor |
| 03/05/1997 | CN1144418A Controller for switched reluctance machine |
| 02/27/1997 | WO1997007589A1 Process and device for operating an asynchronous motor |
| 02/27/1997 | DE19632759A1 Power control for single-phase fan motor or heating resistance |
| 02/19/1997 | EP0758816A1 Flat reluctance type three-phase motor |
| 02/13/1997 | WO1997005692A1 Reluctance motor |
| 02/12/1997 | EP0757537A1 Vacuum cleaner driven by an electric motor |
| 02/12/1997 | CN1142708A Circuit arrangement for powering two-phase asynchronous motor |
| 02/06/1997 | WO1997004520A1 Polyphase reluctance motor |
| 02/05/1997 | EP0756779A1 Device for converting a resistance value into a control signal which depends on the resistance value, and electrical apparatus comprising such a device |
| 01/29/1997 | EP0756373A1 Control of a switched reluctance machine |
| 01/29/1997 | EP0641501B1 Variable reluctance drive system |
| 01/29/1997 | EP0594731B1 Electric machine system |
| 01/23/1997 | WO1997002649A1 Switched reluctance electric machine system |
| 01/23/1997 | WO1997002645A1 Doubly salient permanent magnet machine with field weakening (or boosting) capability |
| 01/23/1997 | DE19534715A1 Protection circuit for relay-controlled electrical motor |
| 01/23/1997 | CA2226004A1 Doubly salient permanent magnet machine with field weakening (or boosting) capability |
| 01/21/1997 | US5596236 Motor capable of using high or low voltage |
| 01/14/1997 | US5594306 Electric motor for portable machine tools |
| 01/08/1997 | EP0752753A2 Power circuit for reluctance machines |
| 01/08/1997 | EP0752751A2 Switching circuit for an inductive load |
| 01/08/1997 | EP0752170A1 Current regulation process and device for a three-phase, static-converter fed, permanently excited synchronous machine |
| 01/07/1997 | US5592062 Controller for AC induction motors |
| 12/31/1996 | US5589752 Controller for switched reluctance motor |
| 12/31/1996 | US5589751 Sensorless switched reluctance motor |
| 12/27/1996 | EP0444198B1 Reluctance type motor |
| 12/24/1996 | US5587642 Air conditioner |
| 12/19/1996 | DE19619778A1 Hand-held battery-operated cosmetic appliance e.g. for nail treatment |
| 12/18/1996 | EP0749202A1 Current decay control in switched reluctance motor |
| 12/18/1996 | EP0748235A1 Reciprocating pump arrangement |
| 12/17/1996 | US5586017 Power generator comprising a transformer |
| 12/04/1996 | EP0746089A1 Synchronous motor control system and method of controlling synchronous motor |
| 12/04/1996 | EP0746088A1 Synchronous motor control system |
| 12/04/1996 | EP0658266B1 Process and device for controlling with pulsed signals |
| 12/04/1996 | EP0524318B1 High-speed reluctance-type electric motor |
| 12/04/1996 | CN1137195A Control circuit and system for switched reluctance machine and method of operating |
| 11/27/1996 | EP0744824A1 Two-phase asynchronous motor supply circuit |
| 11/26/1996 | CA2060440C Ac motor drive system |
| 11/21/1996 | WO1996037040A1 Switched reluctance motor with indirect position sensing and magnetic brake |
| 11/21/1996 | DE19547152A1 Cosmetic machine for finger nail or toe nail care |
| 11/13/1996 | EP0742638A2 Sensing phase current in switched reluctance machines |
| 11/07/1996 | WO1996035257A1 Switched-reluctance rotary machine |
| 11/07/1996 | CA2191736A1 Switched-reluctance rotary machine |
| 11/06/1996 | EP0741450A1 Sensorless motor speed controller |
| 11/06/1996 | CN1135117A Rotation speed control unit for motor and method thereof |
| 10/31/1996 | DE19616851A1 Safety device for preventing inadvertent power supply to electrical equipment e.g. power drill |
| 10/30/1996 | EP0597118B1 Control method for synchronous motor |
| 10/24/1996 | WO1996033550A1 Method and apparatus for hybrid direct-indirect control of a switched reluctance motor |
| 10/23/1996 | EP0739085A2 Compensation for input voltage variation in an electric motor drive |
| 10/21/1996 | CA2174467A1 Compensation for input voltage variation in an electric motor drive |
| 10/16/1996 | EP0738036A1 Speed control process for an electric motor |
| 10/16/1996 | EP0738035A2 Control circuit and system for a switched reluctance machine and method of operating |
| 10/16/1996 | EP0436742B1 Reluctance motor |
| 10/15/1996 | US5566369 Controlled velocity head parking circuit |
| 10/15/1996 | US5565750 Apparatus for applying field excitation to a synchronous electric motor |
| 10/15/1996 | US5564831 Method and apparatus for detecting the temperature of an environment |
| 10/12/1996 | CA2173790A1 Control circuit and system for a switched reluctance machine and method of operating |
| 10/10/1996 | WO1996031334A1 Device for matching speeds of carriage units capable of moving along a rail |
| 10/09/1996 | EP0736962A2 Controller for a switched reluctance machine |
| 10/09/1996 | CN1132961A Single-phase induction motor and refrigerator using single-phase induction motor |
| 10/08/1996 | US5563488 Control of switched reluctance machines |
| 10/08/1996 | US5563487 Control circuit for an inductive load |
| 10/05/1996 | CA2173419A1 Controller for a switched reluctance machine |
| 10/02/1996 | EP0735664A2 Angle control system for a switched reluctance drive utilizing a high frequency clock |
| 10/02/1996 | EP0735653A1 Position encoder with fault indicator |
| 10/02/1996 | EP0734569A1 Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape drive |
| 10/02/1996 | EP0647371B1 Circuit arrangement for mitigating power switch capacitance |
| 10/02/1996 | CN1132575A Electric motor with torque detecting means |
| 10/01/1996 | US5561734 Dial speed control for hand-held power tool |
| 10/01/1996 | US5561356 Shredder motor circuit with power factor correction |