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)
06/2003
06/26/2003US20030117223 Vibrating linear actuator
06/26/2003US20030117095 Excitation circuit and control method for flux switching motor
06/19/2003US20030111975 Rotor position detection of a switched reluctance drive
06/18/2003CN1111936C Optical position-measurement device
06/17/2003US6580185 Integrated system of a permanent magnet excited motor and a non-contact power feeding apparatus
06/12/2003WO2003049274A1 Electronically-commutated motor
06/12/2003WO2003049255A1 Flat noncommutator vibration motor
06/12/2003US20030107343 Voltage-controlled starting relay for induction motor
06/05/2003WO2003047086A1 Method for reducing the influence of a dc current component in the load current of an asynchronous motor
06/05/2003US20030102828 Driving device for oscillatory actuator
06/05/2003US20030101813 Device for measuring rotor imbalance
06/04/2003CN1421992A Tri-phase induction motor driving system and driving method thereof
06/04/2003CN1421991A Start relay for voltage control of induction motor
05/2003
05/30/2003WO2003044938A1 Vibrating linear actuator
05/29/2003US20030099550 Apparatus and method for controlling linear compressor
05/28/2003EP1315298A1 System and method for driving three-phase induction motor
05/28/2003EP1315279A2 Voltage-controlled starting relay for induction motor
05/27/2003US6570358 Control apparatus for alternating-current motor
05/27/2003US6570274 Electric motor
05/22/2003WO2003043173A2 Motor controller
05/22/2003US20030094918 Method and regulator for electrical reluctance machines
05/21/2003EP1312081A1 Scanning device comprising a magnetically guided linear motor
05/21/2003CN1419333A Driving device for vibration type regulator
05/20/2003US6566841 Scroll compressor having multiple motor performance characteristics
05/20/2003US6565327 Circuit for driving linear compressor
05/15/2003DE29824864U1 Revolution rate control for DC universal motor, involves regulating field winding current to level lower than current through armature by branching between armature and field winding
05/13/2003US6563203 Diode chip prevents reverse current
05/08/2003WO2003038988A1 Speed and direction control for capacitor motors
05/08/2003US20030088382 Angle or position detecting apparatus, method thereof, servo apparatus, and servo method, and motor
05/07/2003EP0870923B1 Electromagnetic piston engine
05/07/2003CN1416213A Linear motor controlled by three-terminal, two-way reverse blocking tetrod thyristor component and phase-locked loop
05/06/2003US6559746 Thrust controllable actuator
05/06/2003US6559617 Method for reducing torque ripple of switched reluctance motor
05/02/2003EP1306833A2 Voice coil driven positioner for coarse and fine positioning of magnetic head in multi track tape drive
05/02/2003EP1305876A1 Method for controlling an electrical machine by means of a pulse-width modulation inverter
04/2003
04/29/2003US6555988 Motor control device
04/24/2003US20030077077 Electrical resonance circuits for high efficiency direct current motors
04/24/2003US20030075998 Mesh connected electrical rotating machine with span changing
04/23/2003EP1219012B1 Motor assembly with electronic switch, device powering said motor and electrical vacuum cleaner equipped with said assembly
04/17/2003WO2003032480A1 Motor control system
04/17/2003US20030071593 Multi-mode motor controller chip set
04/17/2003US20030071532 Halbach array generator/motor having an automatically regulated output voltage and mechanical power output
04/16/2003EP1303036A2 Multi-mode motor controller chip set
04/15/2003US6549044 Driving circuit for a voice coil motor and driving method thereof
04/15/2003US6548971 Dual sided self-oscillation circuit for driving an oscillatory actuator
04/10/2003WO2003030339A2 Speed measurement/control of a monophase asynchronous motor
04/10/2003US20030067231 Vibration-generating device which causes variations in vibration and electronic apparatus including the same
04/09/2003CN1409890A Drive system for a set of machines
04/03/2003US20030062869 Method and apparatus for controlling switched reluctance motor and compressor
04/03/2003US20030062864 Driver circuit for a voice coil motor in a disk drive system
04/02/2003EP1298788A1 Rotating electrical machine with two power sources and commutation process
04/02/2003EP1297608A1 Linear actuator control structure
04/02/2003CN1407712A Rotation rate regulating circuit and method for universal motor
04/01/2003US6541953 Apparatus for detecting shaking of stroke of linear compressor and method therefor
04/01/2003US6541838 Power module
03/2003
03/27/2003US20030056741 Electromechanical engine valve actuator system with loss compensation controller
03/26/2003EP1296443A2 Motor driver and system
03/26/2003CN1405971A Motor control device
03/26/2003CN1405966A Vibration type actuating device
03/25/2003US6538402 Self-oscillation system for driving a linear oscillatory actuator around its resonant frequency
03/25/2003US6536387 Electromechanical engine valve actuator system with loss compensation controller
03/20/2003WO2003023226A1 Electronic control system and process for electromagnetic pump
03/20/2003WO2003022720A1 Arrangement for operating a contact roller and associated method for operating a contact roller
03/20/2003US20030053381 Driving apparatus and driving method for actuator, and information recording / reproducing apparatus
03/20/2003US20030052638 Motor driver and system with phase-spaced redundancy
03/20/2003US20030052633 Control device for electric-powered motor and designing method thereof
03/20/2003US20030052632 Method of controlling and switching for braking an electronically commutated electrical motor
03/20/2003US20030052628 Vibration type actuator apparatus
03/19/2003EP1293033A1 Control and regulation of electric motors
03/19/2003CN1404201A Variable vibration generator and electronic machine equiped with the same vibration generating device
03/18/2003US6534972 Magneto-resistive position sensor and variable reluctance controller interface circuit
03/13/2003WO2003021763A1 Halbach array generator/motor having an automatically regulated output voltage and mechanical power output
03/13/2003US20030049135 Electronic control system and process for electromagnetic pump
03/13/2003US20030048021 Disk type D.C. motor having a non-ferrous stator
03/12/2003EP1292009A2 Vibration-generating device which causes variations in vibration and electronic apparatus including the same
03/12/2003EP1292007A2 Method and apparatus for controlling a synchronous motor
03/11/2003CA2129335C Circuit arrangement for mitigating power switch capacitance
03/06/2003US20030044172 Circuit and process for regulating the speed of universal electric motors
03/06/2003US20030042863 Method and apparatus for controlling synchronous motor
03/06/2003US20030042801 Drive apparatus and drive method for electromagnetic drive actuator
03/05/2003EP1289116A2 Circuit and method for controlling the rotational speed of universal motors
03/05/2003EP1289115A1 Drive apparatus and drive method for electromagnetic drive actuator
03/05/2003CN1400431A Control method and device for reciprocating electrical compressor
03/05/2003CN1400388A Stroke control mechanism and method for reciprocating compressor
03/04/2003US6528964 Method and system of reducing turn-off loss and noise in a switched reluctance motor drive
03/04/2003US6527519 Apparatus and method for controlling the operation of a linear compressor using a suction/discharge pressure difference storing unit
02/2003
02/27/2003US20030038609 High frequency induction motor for use in conjunction with speed control device
02/26/2003EP1286122A2 Refrigerating and freezing apparatus
02/20/2003WO2002099308A3 Variable electromagnetic damping apparatus
02/20/2003WO2001076044B1 Reluctance motor and a method for controlling a reluctance motor
02/19/2003CN1398042A Control method and circuit for braking electrical commutating dynamo
02/18/2003US6520746 Apparatus and method for controlling operation of reciprocating compressor
02/13/2003WO2003012973A1 Method for controlling a variable-reluctance machine
02/13/2003US20030030408 Variable speed controller for air moving applications using an AC induction motor
02/12/2003EP1282938A1 Motor energisation control circuit
02/12/2003CN1396704A Equipment and method for controlling rotating speed of synchronous magnetic motor
02/12/2003CN1101615C Linear motor compressor
02/11/2003US6518719 Power tools with operating speed control circuit
02/11/2003US6518718 Speed electromotive force phase control system adapted to low speed
02/11/2003US6518682 System monitor for a linear/rotary actuator
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