| Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487) |
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| 07/15/2009 | CN100514838C Electrical servo power-assisted steering controller |
| 07/15/2009 | CN100513792C Compressor driving device and freezing air conditioner device |
| 07/14/2009 | US7560897 Current controller and current offset correction |
| 07/14/2009 | CA2586303C Power variation control system for cyclic loads |
| 07/08/2009 | EP2077614A2 Servo motor controller |
| 07/02/2009 | WO2009080911A2 Method for calculating, using a computer, a three-phase regulator of a three-phase system having a three-phase model |
| 07/01/2009 | CN201266902Y Double-speed actuator with high power factor and high loading capability |
| 07/01/2009 | CN201266901Y Light load electricity-saving running and soft initiating device for cage induction motor |
| 06/25/2009 | WO2009077221A1 Method and device for operating an electric drive with the aid of a phase angle control |
| 06/25/2009 | US20090160387 Processing unit |
| 06/25/2009 | DE102007062609A1 Method for operating asynchronous motor, involves calculating changing current frequency with continuously detected motor torque on basis of load dependent speed characteristic |
| 06/25/2009 | DE102007062578A1 Air pressure estimating method for wheel of motor vehicle, involves estimating air pressure by comparison of actual distribution with comparison distributions and selection of vibration characteristics of best describing model |
| 06/25/2009 | DE102007060679A1 Verfahren und Vorrichtung zum Unterdrücken, zumindest aber zum Verringern von störenden Vibrationen in einem motorbetriebenen Gerät, insbesondere einem Hausgerät Method and apparatus for suppressing, or at least for reducing troublesome vibrations in a motor-driven appliance, particularly a domestic appliance |
| 06/25/2009 | DE102007060466A1 Anordnung mit einem schwingenden Motor und Verfahren zur Regelung eines schwingenden Motors Assembly comprising a vibrating engine and method for controlling a vibrating motor |
| 06/25/2009 | DE102007058209A1 Verfahren zum Aufschalten eines Umrichters auf eine geberlos betriebene Asynchronmaschine Method for Intrusion of an inverter to run a sensorless induction machine |
| 06/24/2009 | EP2073375A1 Apparatus for avoiding torque components at critical frequencies in machine drive systems |
| 06/24/2009 | EP2073374A1 Apparatus to control torque harmonics in PWM converters and related methods |
| 06/24/2009 | EP2073373A2 Method for controlling motor of air conditioner |
| 06/24/2009 | EP1711997B1 Method and device for controlling a synchronous motor with permanent magnets |
| 06/17/2009 | CN201260147Y Electricity-saving controller for electric motor |
| 06/09/2009 | US7545115 Motor control and driver for electric boosting application |
| 06/09/2009 | US7545114 Parameterization method for a converter and converter implementing the method |
| 06/04/2009 | WO2006057529A3 Operation control device and method of compressor |
| 06/04/2009 | US20090140680 Motor controller of air conditioner |
| 06/04/2009 | DE102007057561A1 Torque determining method for electric machine, involves determining torque of machine while operating as generator and motor, respectively according to voltage, current and number of revolutions of electric drive |
| 05/28/2009 | US20090134834 Motor control device |
| 05/27/2009 | EP2063527A2 Motor controller of air conditioner |
| 05/27/2009 | EP2063339A1 Control method of electromotor |
| 05/27/2009 | CN201248026Y Energy-saving control circuit for solar traveler's cap |
| 05/27/2009 | CN201246144Y 油井变频控制系统和数据采集控制终端 Well inverter control system and data acquisition and control terminal |
| 05/27/2009 | CN101443671A Drive system for an electronic domestic appliance |
| 05/27/2009 | CN100492832C Propulsion power system |
| 05/26/2009 | US7538515 Motor controller |
| 05/26/2009 | US7538514 Systems and methods for controlling torque of a motor |
| 05/21/2009 | US20090128946 Discontinuous mode back emf measurement |
| 05/20/2009 | EP2060002A2 Control of synchronous electrical machines |
| 05/20/2009 | CN201243264Y Electricity economizer for compensation type oilfield oil extractor |
| 05/20/2009 | CN201243263Y Electricity economizer for compensation type injection machine |
| 05/20/2009 | CN101438490A Operation control device and method of compressor |
| 05/19/2009 | US7535372 Method for measuring the operating state of a synchronous motor using composite power angle meter |
| 05/19/2009 | US7534395 Hysteresis compensation system |
| 05/14/2009 | DE102007046980A1 Electrical consumer i.e. electric motor, has modulation circuit galvanically connected with earth and comprising modulation unit for modulation of current discharged over capacitive connection |
| 05/13/2009 | CN201238197Y Energy-saving power distribution unit for alternating current motor operation |
| 05/13/2009 | CN100488025C Energy conserving motor controller |
| 05/07/2009 | WO2009057380A1 Earth leakage detection circuit |
| 05/07/2009 | WO2009056421A2 Method and device for detecting the position of the rotor shaft of a permanent magnet synchronous machine |
| 05/07/2009 | DE102007052365A1 Verfahren und Vorrichtung zur Positionserfassung der Rotorwelle einer permanenterregten Synchronmaschine Method and apparatus for detecting the position of the rotor shaft of a permanent magnet synchronous machine |
| 05/06/2009 | CN201234237Y Dynamic intelligent electricity economizer for AC electric motor |
| 05/06/2009 | CN201234236Y Motor with rotation speed measurement apparatus |
| 05/06/2009 | CN201234176Y Motor with magnetic strength of rotor magnetic pole controllable |
| 05/06/2009 | CN101425776A Fault tolerant control method for double salient pole permanent magnet motor |
| 05/06/2009 | CN100486103C Control device and method for motor speed |
| 05/05/2009 | US7528583 Brushless generator |
| 04/29/2009 | EP2053735A2 Inverter comprising an adjustment tool function for a roller shutter and adjustment method |
| 04/28/2009 | US7525268 Control device for an electric motor and related method |
| 04/23/2009 | WO2009050664A2 Method for analysing the operation of an electromechanical actuator for the powered manoeuvre of a screen, and actuator for implementing same |
| 04/23/2009 | DE102008040922A1 Verfahren und Vorrichtung zur Ansteuerung eines Elektromotors Method and apparatus for driving an electric motor |
| 04/22/2009 | EP2051369A2 Method for determining an internal magnitude of an actuator for manoeuvring a mobile home-automation element |
| 04/22/2009 | EP2050186A1 Drive and method |
| 04/22/2009 | CN100481707C Method and system for limiting the current output by a limit speed controller |
| 04/21/2009 | US7521889 Method of braking induction motor and control apparatus |
| 04/21/2009 | US7521888 Electric motor controller for a domestic appliance |
| 04/21/2009 | US7521885 Activation of an electric motor with continuous adjustment of the commutation angle |
| 04/16/2009 | WO2006074120A3 Circuit to improve motor phase current reconstruction via dc link |
| 04/16/2009 | DE102006035891B4 Antrieb, umfassend einen Elektromotor, der von einem Umrichter gespeist ist, und Verfahren zur Regelung des Motorstromes bei einem von einem Umrichter gespeisten Elektromotor Drive, comprising an electric motor which is powered by an inverter, and method for controlling the motor current in one of one inverter-fed electric motor |
| 04/15/2009 | CN101409529A Motor drive device provided with disturbance load torque observer |
| 04/14/2009 | US7518334 Method and device for controlling a brushless DC motor |
| 04/14/2009 | US7518331 AC rotating electric machine control method and electrical power train system |
| 04/09/2009 | US20090091289 Stator inter-turn fault detection of synchronous machines |
| 04/08/2009 | CN201217193Y Numerical display type power supply for electric screwdriver |
| 04/08/2009 | CN100477479C Motor controller |
| 04/08/2009 | CN100477448C Inner feedback brushless alternating current machine |
| 04/07/2009 | US7514898 Low loss propulsion system |
| 04/02/2009 | US20090085511 High Temperature Superconducting Electromechanical System With Frequency Controlled Commutation For Rotor Excitation |
| 04/02/2009 | US20090085510 Motor Drive Using Flux Adjustment to Control Power Factor |
| 04/01/2009 | CN201215087Y Threaded rod compressor high-efficiency operation system |
| 04/01/2009 | CN101399517A Linear type fan rotation speed characteristic design circuit |
| 03/31/2009 | US7511450 Frequency converter, motor, motor drive system and maintenance method for motor drive system |
| 03/31/2009 | US7511449 Electric motor system implementing vector and slip control |
| 03/26/2009 | WO2009038832A2 System and method to determine electric motor efficiency nonintrusively |
| 03/25/2009 | EP2040372A1 Adaptive drive system using current values for a personal care appliance |
| 03/25/2009 | EP1965725B1 Adaptive drive system using current values for a personal care appliance |
| 03/25/2009 | CN100472936C Driving apparatus for a motor |
| 03/24/2009 | US7508156 Electrical machine having a series chopper circuit |
| 03/19/2009 | US20090072778 Low speed synchronous motor drive operation |
| 03/19/2009 | US20090072770 Power inverter module thermal management |
| 03/18/2009 | EP2036191A2 Method, system, amd apparatus for controlling an electric motor |
| 03/18/2009 | CN201210666Y Intelligent dual feeding synchronous phase device |
| 03/18/2009 | CN201210665Y Energy-saving electrical appliance set for field oil pumping machine |
| 03/18/2009 | CN101388641A Method for operating an electric rotary machine |
| 03/18/2009 | CN101388640A Pressure and speed regulating system for semi-digital AC stator |
| 03/18/2009 | CN100469673C Elevator control apparatus |
| 03/17/2009 | US7505545 Method for recognizing step movement sequence of control rod drive mechanism of nuclear reactor |
| 03/17/2009 | US7504797 Motor control device |
| 03/12/2009 | US20090067203 Three phase inverter with improved loss distribution |
| 03/11/2009 | EP2034606A1 Method for operating an electric rotary machine |
| 03/11/2009 | CN201207633Y Power saving device for AC three phase asynchronous motor |
| 03/11/2009 | CN201207630Y Input and output torque balancing controller |
| 03/11/2009 | CN101383590A Dragging device with high starting performance induction motor and frequency transformer cooperatively running |
| 03/11/2009 | CN101383586A Motor electricity saving device and motor electricity saving method |