| 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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| 12/10/1997 | EP0685121A4 Field weakening for a doubly salient motor with stator permanent magnets. |
| 12/10/1997 | CN1167548A Drive with there-phase asynchronous with slip ring rotor |
| 12/09/1997 | US5696432 Method of controlling the power of an induction motor |
| 12/09/1997 | US5696430 Circuit, motor, and method generating a signal representing back EMF in an energized motor winding |
| 12/04/1997 | WO1997045222A1 Control device for boring machine |
| 12/03/1997 | EP0810143A2 Method and apparatus for controlling an electric assist steering system by linearizing system input-output torque gain |
| 12/03/1997 | EP0752170B1 Current regulation process and device for a three-phase, static-converter fed, permanently excited synchronous machine |
| 12/02/1997 | US5693091 Artificial heart and method of maintaining blood flow |
| 11/25/1997 | US5691638 Apparatus for obtaining 3-phase position detecting signals by using a single position detecting element |
| 11/25/1997 | US5691591 Switched reluctance motor with indirect position sensing and magnetic brake |
| 11/18/1997 | US5689168 Control circuit for two speed motors |
| 11/18/1997 | US5689166 Method and apparatus for controlling hybrid excitation type permanent magnet synchronous motor |
| 11/18/1997 | US5689165 Estimator initialization circuit and method for a sensorless switched reluctance machine system |
| 11/18/1997 | US5689164 Resonant power electronic control of switched reluctance motor |
| 11/18/1997 | CA2064182C Shifted pole single phase variable reluctance motor |
| 11/11/1997 | US5686805 Repulsion motor |
| 11/06/1997 | WO1997041558A1 Pwm/linear driver for disk drive voice coil actuator |
| 11/04/1997 | US5684376 Solid state motor speed control |
| 11/04/1997 | US5682826 Systems and methods for controlling a draft inducer for a furnace |
| 11/04/1997 | US5682634 Method and device for controlling speed of a washing machine motor |
| 10/29/1997 | EP0803971A1 Method and device for controlling the rotational speed of a single phase induction motor in ventilating devices or the like as a function of pressure |
| 10/23/1997 | WO1997039522A1 Improved method and apparatus for controlling a switched reluctance machine |
| 10/22/1997 | EP0802623A1 Converter circuit for a polyphase switched inductive load |
| 10/22/1997 | EP0802270A2 Weaving apparatus |
| 10/21/1997 | US5680021 Systems and methods for controlling a draft inducer for a furnace |
| 10/16/1997 | WO1997038486A1 Estimator initialization circuit and method for a sensorless switched reluctance machine system |
| 10/16/1997 | WO1997038485A1 Instantaneous position indicating apparatus for a sensorless switched reluctance machine system |
| 10/16/1997 | WO1997038484A1 Relative angle estimation apparatus for a sensorless switched reluctance machine system |
| 10/16/1997 | WO1997038483A1 Estimator lock detection circuit for a sensorless switched reluctance machine system |
| 10/16/1997 | WO1997038482A1 Commutation apparatus and method for a sensorless switched reluctance machine system |
| 10/15/1997 | EP0801464A1 Current shaping in reluctance machines |
| 10/15/1997 | EP0801462A1 Device generating three-phase position detecting signal with two coils |
| 10/15/1997 | CN1162372A Method and device for controlling load power via phase adjustment system |
| 10/14/1997 | US5677607 Energization control system for a switched reluctance motor |
| 10/14/1997 | US5677580 Transversal-flux permanent magnet motor |
| 10/14/1997 | US5676651 Surgically implantable pump arrangement and method for pumping body fluids |
| 10/14/1997 | US5676162 Reciprocating pump and linear motor arrangement |
| 10/14/1997 | US5676069 Systems and methods for controlling a draft inducer for a furnace |
| 10/08/1997 | CN1161764A Electronically switched reluctance motor |
| 10/01/1997 | EP0798856A1 Impulse generator circuit |
| 10/01/1997 | EP0512121B1 Current controller for inductive load |
| 09/25/1997 | DE19700074A1 Bidirectional universal motor esp. for hand-held drills and screwdrivers |
| 09/23/1997 | US5670858 Electronic control apparatus |
| 09/18/1997 | WO1997034365A1 System for controlling operation of a switched reluctance motor between a multi-phase operating mode and a reduced phase operating mode |
| 09/04/1997 | DE19520776A1 Electric screwdriver tool with variable speed drive |
| 09/03/1997 | EP0792537A1 Method and apparatus for control of a switched reluctance motor |
| 09/02/1997 | US5663625 Switch-type reluctance motor and method to compensate for counter electromotive force |
| 08/28/1997 | WO1997031421A1 Motor |
| 08/28/1997 | DE19605412A1 Electrodynamic DC linear motor with active braking device |
| 08/26/1997 | US5661381 Apparatus for external inductance sensing for variable-reluctance motor commutation |
| 08/20/1997 | EP0790700A1 Apparatus for external inductance sensing for variable reluctance motor commutation |
| 08/19/1997 | US5659452 Method of drive protection for a switched reluctance electric motor |
| 08/19/1997 | US5659233 Controller for controlling motor transferring power between a plurality of power sources |
| 08/19/1997 | US5658132 Power supply for vibrating compressors |
| 08/14/1997 | WO1997029542A1 Method for powering an electronically switched variable-reluctance electric motor, and power supply circuit therefor |
| 08/13/1997 | EP0788678A1 Method and device for load power control via a phase adjustment system |
| 08/12/1997 | US5656912 Method and apparatus for controlling a motor |
| 08/06/1997 | EP0721695B1 Electric motor with torque detecting means |
| 08/05/1997 | US5654620 Sensorless speed detection circuit and method for induction motors |
| 07/31/1997 | WO1997027666A1 Circuit for determining the speed of a commutator motor |
| 07/31/1997 | WO1997027665A1 Method for powering an electronically switched variable reluctance motor, and power supply circuit therefor |
| 07/31/1997 | DE19602362A1 Schaltungsanordnung zur Bestimmung der Drehzahl eines Kommutatormotors Circuit arrangement for determining the speed of a commutator motor |
| 07/29/1997 | US5652494 Angle controller for a switched reluctance drive utilizing a high frequency clock |
| 07/29/1997 | US5652492 Current supply control circuit for a reluctance motor |
| 07/23/1997 | EP0785615A1 Reluctance motor |
| 07/23/1997 | EP0785614A1 Polyphase reluctance motor |
| 07/23/1997 | EP0784884A1 Electric tool, in particular a screw-driving tool |
| 07/22/1997 | US5650706 Control device for salient pole type permanent magnet motor |
| 07/22/1997 | US5650697 Motor unit, motor drive unit, fan unit and method of controlling the motor drive unit |
| 07/17/1997 | WO1997025770A1 Ac motor with reactor connected to power source |
| 07/16/1997 | EP0784377A1 Sensoless switched reluctance motor |
| 07/16/1997 | EP0526660B1 Apparatus for controlling load numerically |
| 07/09/1997 | EP0782781A1 Electronically switched reluctance motor |
| 07/08/1997 | US5646497 Switching arrangement for controlling the rpm of electric motors |
| 07/08/1997 | CA2086978C Variable speed asynchronous induction motor |
| 07/03/1997 | WO1997023941A1 Variable reluctance motor systems |
| 07/03/1997 | WO1997023728A1 Electromagnetic piston engine |
| 07/03/1997 | WO1997023727A1 Motor |
| 07/03/1997 | DE19654040A1 Switched reluctance motor control device |
| 07/03/1997 | DE19652190A1 Cosmetic electric motor powered treatment tool, esp for nail care |
| 07/02/1997 | CN1153423A Angle controller for switched reluctance drive utilizing high frequency clock |
| 07/01/1997 | US5644201 Adjustable height podium |
| 07/01/1997 | US5644112 Electrical switch |
| 06/26/1997 | WO1997023028A1 Electrical synchronous linear motor and method for determining the commutation offset of a linear drive with said electrical synchronous linear motor |
| 06/26/1997 | DE19547686A1 Elektrischer Synchron-Linearmotor und Verfahren zur Ermittlung des Kommutierungsoffsets eines Linearantriebs mit einem solchen elektrischen Synchron-Linearmotor Synchronous linear electric motor and method for determining the commutation offset of a linear drive with a synchronous linear electric motor such |
| 06/26/1997 | DE19547454A1 Control device for electric dish washing machine circulation pump motor |
| 06/25/1997 | EP0780966A2 Sensorless rotor position monitoring in reluctance machines |
| 06/25/1997 | CN1152975A Load-commutated synchronous motor drive |
| 06/24/1997 | US5642044 Encoder system |
| 06/18/1997 | EP0778992A1 Circuit arrangement to prevent brush problems |
| 06/11/1997 | EP0778661A2 Method and apparatus for reducing iron losses in a switched reluctance machine |
| 06/10/1997 | US5637974 Method and apparatus for hybrid direct-indirect control of a switched reluctance motor |
| 06/03/1997 | US5635806 Method and apparatus for temperature monitoring of universal or AC/DC motors |
| 05/29/1997 | WO1997019511A1 Load power control method using a phase control system, and device therefor |
| 05/28/1997 | EP0776084A2 Apparatus and method for force compensation in a variable reluctance motor |
| 05/27/1997 | US5633546 Magnetic sensor for switched reluctance motor |
| 05/27/1997 | US5632087 Reciprocatory dry shaver |
| 05/21/1997 | EP0774828A1 Phase energisation controller and method for controlling switched reluctance machines using simple angular position sensors with improved angle interpolation |
| 05/20/1997 | US5631817 Load current control of pulse width modulated drive signal including calibration and correction coefficient |
| 05/20/1997 | US5631527 Voice coil motor feedback control circuit |