Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02P - Control or regulation of electric motors, generators, or dynamo-electric converters; Controlling transformers or reactors or choke coils › H02P 25 - Arrangements or methods for the control of ac-motors characterised by the kind of ac-motor or by structural details
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)
11/1998
11/24/1998US5841621 Sensorless measurement of electromagnetic actuator displacement device
11/24/1998US5841358 Motor current status sensor
11/24/1998US5841262 Low-cost universal drive for use with switched reluctance machines
11/19/1998DE19720118A1 Controlling reluctance motor, e.g. for actuator in vehicle
11/18/1998EP0792537A4 Method and apparatus for control of a switched reluctance motor
11/17/1998US5838515 PWM/linear driver for disk drive voice coil actuator
11/17/1998US5838144 Solid state, reduced voltage motor starter enabling equalized input/output volt-amp ratings
11/17/1998US5838134 Universal commutator for A.C. motors
11/17/1998US5838133 Switched reluctance motor controller
11/17/1998US5838129 Driving method for multiple-pole motors with optimum driving waveform
11/11/1998EP0877471A1 A solid state, reduced voltage motor starter
11/11/1998EP0877232A2 Transducer offset compensation
11/11/1998EP0876705A1 Method for powering an electronically switched variable reluctance motor, and power supply circuit therefor
11/11/1998CN1198610A Solid state motor voltage-reducing starter capable of equalizing input/output volt-ampere nominal rating
11/10/1998US5835993 AC Motor controlling apparatus
11/10/1998US5835351 Modular D.C. tool switch assembly
11/07/1998CA2234949A1 A solid state, reduced voltage motor starter enabling equalized input/output volt-amp ratings
10/1998
10/29/1998DE19718816C1 Controlled current supply for electric hand tools
10/27/1998US5828154 Reluctance motor
10/22/1998DE19714856A1 Ventilatorkühleinrichtung Fan cooling device
10/21/1998EP0872012A1 A device for control of the speed of a series motor
10/20/1998US5825153 Current measuring apparatus
10/20/1998US5825152 Load-commutated synchronous motor drive
10/20/1998US5825113 Doubly salient permanent magnet machine with field weakening (or boosting) capability
10/15/1998WO1998045934A1 Fan cooler
10/15/1998DE19711434A1 Control circuit arrangement for DC motor connected to AC line supply
10/14/1998EP0871286A1 Method and apparatus for reducing torque ripple in an electric motor using anticausal filtering
10/14/1998EP0870923A1 Electromagnetic piston engine
10/14/1998CN1195922A Method and apparatus for controlling current in switched reluctance motor
10/14/1998CN1195921A Current control apparatus in switched reluctance motor
10/14/1998CN1195917A Apparatus for sensing position of switched reluctance motor
10/13/1998US5822281 Disk apparatus and disk access method employing counterelectromotive voltage from second voice coil motor to control first voice coil motor
10/13/1998US5821723 Speed control apparatus for a switched reluctance motor
10/13/1998US5820349 Rotary compressor with reverse rotating braking
10/07/1998EP0869601A2 Motor arrangement
10/07/1998EP0868774A1 Electrical synchronous linear motor and method for determining the commutation offset of a linear drive with said electrical synchronous linear motor
10/07/1998EP0868771A1 Variable reluctance motor systems
10/06/1998US5818180 Method for positioning the heads in a disk drive
09/1998
09/29/1998US5814965 Reduced noise controller for a switched reluctance machine
09/23/1998EP0866547A1 Electronic commutation of the winding of a reluctance motor
09/23/1998EP0866546A2 Drive for a direct current motor supplied from an alternative voltage supply with two connections
09/23/1998EP0865147B1 Electric fan
09/23/1998EP0703344B1 Selfactuating stopping device for a roller blind, especially for a roller shutter
09/22/1998US5811954 Reduced noise controller for a switched reluctance machine using active noise cancellation
09/17/1998DE19808671A1 Motor control circuit
09/16/1998EP0865153A1 Variable load inductance compensation for motor drive circuits
09/16/1998EP0865147A1 Electric fan
09/15/1998US5808441 Microprocessor based motor control system with phase difference detection
09/15/1998US5808395 Torque motor
09/09/1998CN1192607A Variable speed controlling device for induction motor
09/02/1998CN1192080A Drive controlling method for linear vibration motor
08/1998
08/27/1998WO1998037615A1 Apparatus for producing linear motion
08/27/1998DE19705907A1 Power control method for electrical loads connected to AC network
08/26/1998EP0860938A1 Power controlling method for vaccum-cleaner
08/26/1998EP0860933A2 Linear vibration motor and method for controlling vibration thereof
08/19/1998EP0859452A1 Method and device for power control of electric consumers connected to an alternating voltage supply network
08/18/1998US5796248 Method and apparatus for commutating a three-phase variable reluctance motor
08/18/1998US5796245 Process and device for controlling the power of a load via a phase adjustment system
08/18/1998US5796235 Process and circuits for determining machine-related electro-magnetic and mechanical state variables on electrodynamic induction machines supplied via converters
08/18/1998US5796234 Variable speed motor apparatus and method for forming same from a split capacitor motor
08/18/1998US5796228 Method of controlling rotary magnet multi-phase synchronous motor and control therefor
08/18/1998US5796226 Energization control system for switched reluctance motor
08/12/1998EP0857119A1 Controller for devices driven by linear motors
08/11/1998US5793834 Method for detecting position of linear stepping motor and apparatus therefor
08/11/1998US5793179 Sensorless rotor position monitoring in reluctance machines
08/06/1998DE19802999A1 Control current regulation for linear electromagnet
08/05/1998EP0662265B1 Sensing of rotor position of a switched reluctance motor without a shaft position sensor
08/04/1998US5789894 Solid state motor speed control
08/04/1998US5789893 Angle firing controller and method of controlling a switched reluctance machine
08/04/1998US5789883 Pulse duration modulated switched reluctance motor control
08/04/1998US5788171 Method and apparatus for detecting residual bobbin thread in a sewing machine
07/1998
07/29/1998EP0855791A1 Control of an inductive load
07/29/1998EP0765542B1 Process for controlling a reluctance engine
07/28/1998US5786681 Active phase coil inductance sensing
07/21/1998US5783940 Encoder circuit for determining the position of a rotor of a multiphase motor
07/21/1998US5783916 Apparatus and method for generating rotor position signals and controlling commutation in a variable reluctance electric motor
07/21/1998US5783915 Linear actuating apparatus
07/15/1998EP0852761A1 Combined motor drive and control device
07/14/1998US5780949 Reluctance machine with auxiliary field excitations
07/02/1998WO1998028838A1 Power electronic unit for a synchronous motor
06/1998
06/30/1998US5773941 Two-wire brushless DC motor control system
06/30/1998US5773908 Single phase motor with positive torque parking positions
06/25/1998WO1998019388A3 Speed control for the fan motor of a hot-air appliance
06/23/1998US5771166 Asymmetrical bridge inverter circuit for driving a switched reluctance motor
06/23/1998US5770909 Wound rotor synchronous motor-generator and field control system therefor
06/18/1998WO1998026499A1 Improved switched reluctance motor drive control system
06/17/1998EP0848491A2 Hysteresis current controller for a reluctance machine
06/17/1998CN1185055A Hysteresis current controller for reluctance machine
06/16/1998US5767638 Electric motor drive
06/10/1998EP0757537B1 Vacuum cleaner driven by an electric motor
06/09/1998US5764019 Control circuit and system for a switched reluctance machine and method of operating
06/03/1998CN1183670A System for optimization of magnetizing current in linear induction motors
06/03/1998CN1183669A Driving apparatus of switched reluctance motor
06/02/1998US5760567 Induced voltage reduction method and an induced voltage reduction apparatus for an induction motor
06/02/1998US5760566 Control device for stopping the operation of a single-phase asynchronous motor with a capacitor
06/02/1998US5760565 Method and apparatus for reducing iron losses in a switched reluctance machine
06/02/1998US5760553 Speed control method for an electric motor
06/02/1998US5758666 Reciprocating pump with imperforate piston
05/1998
05/27/1998EP0843912A1 Process and device for operating an asynchronous motor
05/27/1998CN1182971A Electric motor
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