Patents
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)
01/1996
01/17/1996EP0692862A2 Power supply to a stator of a polyphase reluctance machine
01/17/1996CN1115134A Motor control
01/16/1996US5485072 Process for operating permanently excited single-phase alternating current machines
01/16/1996US5485047 Reluctance-type motor and a rotor for a reluctance-type high-speed motor
01/16/1996CA2013237C Universal motor speed control circuit for hand mixer
01/14/1996CA2153526A1 Power supply to a stator of a polyphase reluctance machine
01/13/1996CA2151756A1 Electric machine controller
01/11/1996WO1996000882A1 Switched reluctance machine having unbalance forces compensation coils
01/11/1996WO1995023000A3 Reciprocating pump arrangement
01/10/1996EP0691732A1 Single-phase synchronous motor with permanently excited rotor
01/10/1996EP0429659B1 Driving system and controller therefor
01/09/1996US5483139 Motor start, reverse and protection system without a starting capacitor
01/03/1996EP0500950B1 Reluctance-type motor driving system
01/03/1996EP0443032B1 Power supply control apparatus of inductance load
12/1995
12/29/1995EP0733279A4 Repulsion motor
12/21/1995WO1995034947A1 Process for controlling the switching-off process of the branches of a reluctance engine
12/20/1995CN1113617A Improvement to electric motors
12/13/1995EP0579694B1 Process and circuits for determining machine-related electromagnetic and mechanical state variables on electrodynamic induction machines supplied via converters
12/13/1995CN1113213A Velocity regulated, open current loop, variable voltage, variable frequency, linear induction motor drive for an elevator car door
12/13/1995CN1113212A Noise free linear induction motor elevator car door drive
12/06/1995EP0685926A2 Method and device for controlling speed of a washing machine motor
12/06/1995EP0685121A1 Field weakening for a doubly salient motor with stator permanent magnets
12/06/1995EP0569588B1 Device for controlling current application to inductance coil
12/06/1995EP0500963B1 Three-phase reluctance motor
11/1995
11/29/1995EP0684695A2 Variable speed control for a hand-held electric power tool
11/29/1995EP0684693A2 Improved sensorless commutation controller for a poly-phase dynamoelectric machine
11/29/1995EP0684692A2 Motor drive with programmable funtion switches
11/29/1995EP0684689A2 Method and device for controlling speed of a washing machine motor
11/29/1995EP0684688A1 Power generator with a transformer
11/29/1995EP0684334A2 Method and device for controlling speed of a washing machine motor
11/29/1995EP0542955B1 Load-control circuit for a mains-powered asynchronous single-phase capacitor motor
11/29/1995EP0413032B1 Method of controlling ac motor
11/22/1995CN1112308A An electric motor for portable machine tools
11/21/1995US5469039 Control of switched reluctance machines
11/21/1995US5469030 Direct current motor drive apparatus
11/16/1995DE4416302A1 Electronic and electric engineering units and facilities for squirrel cage motors
11/14/1995US5467025 Sensorless rotor position measurement in electric machines
11/08/1995EP0476152B1 Device for driving variable reluctance motor
11/02/1995WO1995028867A1 Vacuum cleaner driven by an electric motor
10/1995
10/26/1995WO1995028763A1 Method and device for lowering induced voltage of induction motor
10/26/1995WO1995016986A3 Voice coil driven positioner for coarse and fine positioning of magnetic head in multi-track tape drive
10/25/1995EP0678972A1 A control circuit for an inductive load
10/24/1995US5461295 Noise reduction in a switched reluctance motor by current profile manipulation
10/23/1995CA2147583A1 Control circuit for an inductive load
10/18/1995EP0677800A2 Electronic control system of washing water pressure
10/17/1995US5459385 For commutating phases of a variable reluctance motor
10/11/1995EP0676527A1 Linear induction motor elevator car door drive
10/11/1995EP0676526A1 Maintaining open loop current drive to linear induction motor
10/11/1995EP0676525A1 Linear induction motor drive for an elevator car door
10/10/1995US5457375 Sensorless commutation controller for a poly-phase dynamoelectric machine
10/10/1995US5457373 Electric motor with integrally packaged day/night controller
10/05/1995WO1995026261A1 Reciprocatory dry shaver
10/04/1995EP0674979A1 Reciprocatory dry shaver
10/04/1995EP0378693B1 Coil winding structure of a.c. motor coil
10/03/1995US5455886 Electrical implement with variable speed control
10/03/1995US5455496 Head-retract circuit for moving media storage apparatus
10/03/1995US5455473 Field weakening for a doubly salient motor with stator permanent magnets
09/1995
09/28/1995WO1995026072A1 Current regulation process for a three-phase, static-converter fed, permanently excited synchronous machine
09/28/1995DE4406770C1 2-point regulation system for reluctance motor
09/20/1995EP0673109A1 An electric motor for portable machine tools
09/20/1995EP0672912A1 Indicator for a monophase asynchronous motor
09/20/1995EP0672287A1 Voice coil motor control circuit and method
09/14/1995DE4408442A1 Circuit to control speed of universal motor e.g for vehicle air conditioner
09/13/1995EP0671812A2 Circuit arrangement for controlling the speed of electric motors
09/13/1995EP0671542A1 Electric motor driven device including means for measuring the movement of the driven body
09/13/1995CN1108324A Method and device for controlling speed of a washing machine motor
09/12/1995US5449992 Braking circuit for an electric motor
09/07/1995DE19513301A1 Momentum exchange unit flicks clips back to the start of the process
09/06/1995EP0670628A1 Device for supplying power to an alternating current motor
09/06/1995EP0670622A1 Improvement to electric motors
09/05/1995US5448149 Indirect rotor position sensor for a sinusoidal synchronous reluctance machine
09/05/1995CA2143929A1 Electric motors
08/1995
08/31/1995WO1995023000A2 Reciprocating pump arrangement
08/31/1995CA2183666A1 Reciprocating pump arrangement
08/30/1995EP0669709A1 Output stage especially for integrated amplifiers with externally connected output power devices
08/30/1995CN1107625A Rotational speed control device for an ac motor
08/29/1995US5446361 Circuit arrangement for powering a two-phase asynchronous motor
08/29/1995US5446360 Method and apparatus for controlling single phase induction motor
08/29/1995US5446359 Current decay control in switched reluctance motor
08/24/1995WO1995022851A1 Apparatus for obtaining three-phase position detection signals by one position detection element
08/16/1995EP0667009A1 Motor driven step switch
08/09/1995EP0641501A4 Variable reluctance drive system.
08/08/1995US5440218 Reversible switched reluctance motor operating without a shaft position sensor
07/1995
07/31/1995EP0672287A4 Voice coil motor control circuit and method.
07/26/1995EP0664601A1 Pulsed synchronous reluctance motor
07/26/1995CN1105786A Motor capable of using high or low voltage
07/25/1995US5436546 Method and apparatus for switching back a change-pole motor
07/25/1995US5436544 Method of phase advancing compensation control for an AC synchronous motor
07/12/1995EP0662751A1 Reluctance motor
07/12/1995EP0662750A1 Motor control
07/12/1995EP0662266A1 Process and device for regulating a converter-powered, permanently excited synchronous motor.
07/12/1995EP0662265A1 Sensing of rotor position of a switched reluctance motor without a shaft position sensor
07/12/1995EP0564468B1 Phase-control circuit
07/11/1995US5432421 Process for detecting the position, direction of movement and dynamic characteristic values of remote-controlled displacement of an adjustable object
07/11/1995US5432420 Reluctance-type motor and a DC motor capable of performing regenerative braking
07/06/1995DE4414029A1 Capacitor switch for parallel- or series-wound capacitor motor
07/06/1995CA2138916A1 Motor control
07/05/1995EP0364589B1 Device for switching connection of a three-phase induction motor
06/1995
06/29/1995DE4440449A1 Idling and stoppage control of drives for roller blinds etc and also film screen
06/29/1995DE4335481A1 Circuit arrangement for limiting electrical motor speed response to load change
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