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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08/06/2008 | CN101237209A Highly responsive permanent magent motor controller |
08/05/2008 | US7408312 Control device for permanent magnet synchronous motor |
07/30/2008 | EP1950877A1 Method for supplying a single-phase electric motor and supply system for implementing such a method |
07/29/2008 | CA2327579C Method and apparatus of improving the efficiency of an induction motor |
07/24/2008 | US20080174257 Variable speed drive with integral bypass contactor |
07/24/2008 | DE102006021498B4 Elektrische Wechselstrommaschine Electric alternator |
07/23/2008 | EP1946437A1 Apparatus and method for driving 2-phase srm motor |
07/23/2008 | CN201090479Y Fan operating control circuit |
07/23/2008 | CN101228680A Apparatus and method for increasing efficiency of electric motors |
07/23/2008 | CN101227167A Motor drive apparatus |
07/23/2008 | CN100405740C Digital differential amplification control device |
07/23/2008 | CN100405734C Multiphase motor winding topology and control |
07/17/2008 | WO2008084775A1 Inverter compressor operation method and compressor drive device |
07/17/2008 | US20080169775 Control Apparatus for Electric Car |
07/17/2008 | US20080168611 Changing Amplitude of Movement By Changing the Drive Frequency of a Toothbrush Brushhead |
07/16/2008 | EP1943726A1 Electronic intermediate dc circuit |
07/16/2008 | CN101222202A Multi-component timing method of power system especially for oil pump |
07/16/2008 | CN101222201A Frequency-conversion pole-changing binary timing control cabinet especially for oil pump motor |
07/10/2008 | US20080167769 Method For Controlling the Operation and Continuous Current Mode of a Drive Assembly For a Motor Vehicle Provided With an Internal Combustion Engine |
07/09/2008 | EP1942573A1 Alignment apparatus and exposure apparatus using the same |
07/09/2008 | EP1941593A1 Mixed device for controlling power transfer between two cores of a direct current network and supplying an alternating current motor |
07/09/2008 | CN101218741A Variable speed drive for a chiller system with a switched reluctance motor |
07/09/2008 | CN101218740A Electromotor |
07/09/2008 | CN100401631C System and method for automatic current limit control |
07/03/2008 | US20080157706 Method for Controlling a Heat Engine Vehicle Driving Assembly |
07/02/2008 | CN101212197A AC motor system with variable number of pole pairs for electric automobile |
07/02/2008 | CN100399695C Rotor position detecting for conversion-type magnetic resistance drive |
07/02/2008 | CN100399682C Electrical machines |
06/26/2008 | DE112006002150T5 Drehmomentwelligkeitsunterdrücker eines Motors Drehmomentwelligkeitsunterdrücker a motor |
06/25/2008 | EP1936798A2 Operation of an electrical drive system |
06/25/2008 | CN201078841Y Multi-mode alternating current asynchronous motor operating control device |
06/25/2008 | CN101208858A Method for controlling a reluctance motor |
06/25/2008 | CN100397780C Motor control system and method with adaptive current profile |
06/25/2008 | CN100397778C Brushless motor control utilizing independent phase parameters |
06/19/2008 | WO2008072525A1 Shaft-type linear motor positioning device |
06/19/2008 | DE10311028B4 Verfahren zur Bestimmung einer Startrotorlage und Drehzahl bei Impulsfreigabe einer stromrichtergespeisten, permanenterregten Synchronmaschine ohne Lage-und Drehzahlgeber Method for determining a starting rotor position and speed at pulse enable a converter-fed permanent magnet synchronous machine without position and speed encoder |
06/18/2008 | EP1932233A1 Apparatus and method for driving 2-phase srm |
06/18/2008 | CN201074605Y Primary and secondary shelves secondary velocity modulation electric fan |
06/18/2008 | CN101204001A An electromechanical generator for, and method of, converting mechanical vibrational energy into electrical energy |
06/18/2008 | CN101202527A High precision velocity simulate given circuit |
06/17/2008 | US7388345 Rotor position detection in an electrical machine |
06/11/2008 | EP1931025A2 Control of a switched reluctance machine |
06/11/2008 | CN201072607Y Digitized electric power and electric motor control experimental device |
06/11/2008 | CN100394028C Apparatus and method for controlling operation of a reciprocating compressor |
06/05/2008 | WO2008066035A1 Seismic isolation control system |
06/05/2008 | WO2008019754A3 Method for determining the dirtiness of an electrically driven cutting tool, and hair cutting device |
06/05/2008 | US20080129237 Motor control method and motor control apparatus |
06/05/2008 | DE102007057499A1 Control method for e.g. synchronous reluctance motor, involves referencing magnetic-state information with use of obtained command information and detection information, and controlling output of motor |
06/05/2008 | DE102007047894A1 Motor control device i.e. shift range changeover control device for controlling e.g. drive shift range, of automatic transmission of vehicle, has learning device lowering torque of motor in course of execution of strike control |
06/05/2008 | DE102006058179A1 Hochdruckreinigungsgerät und Verfahren zur Änderung von dessen Motorleistung High pressure cleaning equipment and procedures to amend its engine power |
06/05/2008 | DE102006057213A1 Elektrische Antriebsvorrichtung Electric drive device |
06/05/2008 | DE102006056855A1 Elektronisches Antriebssystem für ein Aggregat eines Fahrzeugs An electronic drive system for a unit of a vehicle |
06/05/2008 | DE102005017906B4 Wärmebehandlung metallischer Werkstücke Heat treatment of metal workpieces |
06/04/2008 | CN201069861Y Reverser speed-adjusting device for lifter |
05/29/2008 | WO2008062125A1 Method for controlling the driveability of the rear wheels of a vehicle and corresponding driving assembly |
05/29/2008 | US20080121448 Energy storage and recovery for a tracked machine |
05/28/2008 | CN201066831Y Frequency conversion execution mechanism for DC brushless servo electromotor |
05/28/2008 | CN201066818Y Multi-rated rotate speed brushless DC electromotor for dual voltage working mode |
05/28/2008 | CN100390414C Device and method for overload protection of compressor |
05/22/2008 | WO2008058436A1 Electric reciprocating motion device |
05/22/2008 | US20080116857 Control method of generator |
05/21/2008 | CN201063578Y Automatic control device for motor |
05/21/2008 | CN201062589Y Electric fan double-control energy-saving speed governor |
05/21/2008 | CN101185237A Method for position and/or speed control of a linear drive |
05/21/2008 | CN101185236A Linear motor control method and linear motor control device |
05/21/2008 | CN101185150A Control circuit with reduced load for a bypass switch |
05/21/2008 | CN101183845A Electric motor speed controller for vehicle |
05/20/2008 | US7375488 Brushless repulsion motor speed control system |
05/20/2008 | US7375346 Positioning device and method of initializing a positioning device |
05/15/2008 | DE102006053309A1 Electrical drive for functional unit of vehicle i.e. motor vehicle, has coil arrangement including set of coils attached at commutator acting together with brushes that are connected with voltage source via voltage supply line |
05/14/2008 | CN101179254A Power-saving device of industry high speed seamer |
05/14/2008 | CN101179253A Three-phase clutch motor load three-phase operation, idle load single-phase operation method |
05/13/2008 | US7372233 Method for operation of a converter circuit for a washing machine or a washer/drier, converter circuit, and washing appliance or washer/drier |
05/13/2008 | US7372232 Apparatus for drive control, power conversion, and start-up control in a PMBDCM or two-phase SRM drive system |
05/13/2008 | US7372228 Electric power tool with memory capability |
05/13/2008 | US7370508 Rotor position detection in an electrical machine |
05/13/2008 | CA2377980C Power supply circuit of an electric motor and corresponding control method |
05/08/2008 | WO2008053441A1 System for adapting the resonant operation of a personal care appliance during the lifetime thereof |
05/07/2008 | EP1918506A2 Home automation actuator comprising an asynchronous electric motor with variable rotation speed |
05/02/2008 | WO2008050919A1 Apparatus and method for driving 2-phase srm |
05/02/2008 | WO2008050918A1 Apparatus and method for driving 2-phase srm motor |
04/30/2008 | EP1915231A1 Method and device for the technique of cold microforging any freely formed 3-d surfaces |
04/30/2008 | CN201054562Y Motor controller and fruit and vegetable machine using this controller |
04/30/2008 | CN100385789C System for controlling rotary device |
04/24/2008 | WO2008047961A1 Driving apparatus for fan using multiple him motor |
04/24/2008 | US20080094603 Magnetic levitation wafer stage, and method of using the stage in an exposure apparatus |
04/23/2008 | CN201051735Y Single phase motor drive device |
04/23/2008 | CN101166011A Trolley motor control circuit |
04/22/2008 | US7362003 Coil switching circuit for linear electric generator |
04/10/2008 | WO2008040135A1 Method for the bidirectional control of an electric motor for a surgical or dental instrument |
04/10/2008 | DE102007011682A1 Air supply unit for fuel cell in motor vehicle, has electric machine with two galvanically independent three-phase subsystems with redundant characteristics, and six-phase subsystem operating in case of failure of both subsystems |
04/09/2008 | EP1908427A1 Bidirectional control method for an electric motor for surgical or dental instrument |
04/03/2008 | WO2008038695A1 Method for controlling ac linear motors, device for driving ac linear motors, and system of ac linear motors |
04/03/2008 | WO2008010213A3 Variable voltage supply system |
04/03/2008 | WO2007120264A3 Application of a switched reluctance motion control system in a chiller system |
04/02/2008 | CN101156310A Heat treatment of metal work pieces |
04/02/2008 | CN101154916A Method for forming high-torque high-efficiency high-voltage variable-power intelligent-driving motor system |
04/02/2008 | CN101154912A H bridge control system and its control method |
03/27/2008 | DE102007042435A1 Single phase synchronous motor for use in cooling and/or freezing device, has measuring device measuring phase shift of current and voltage, and evaluation device obtaining statement that whether engine is started based on measurement value |
03/26/2008 | EP1903667A1 Operating Electrical Machines from a DC link |