| 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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| 03/11/2009 | CN100468952C Intelligent power saving device for AC motor |
| 03/11/2009 | CN100468946C Lead-angle control method and device for operating permanent magnet synchronous motor in flux weakening regions |
| 03/10/2009 | US7501786 Stabilizer control apparatus |
| 03/10/2009 | US7501783 Method of automatically setting vibration suppression filter and automatic setting apparatus for vibration suppression filter |
| 03/05/2009 | US20090058341 Control method and system with feedback indicative of load flux |
| 03/05/2009 | US20090058331 Semiconductor Power Converter |
| 03/05/2009 | US20090056385 Motor controller and washing machine |
| 03/04/2009 | EP1817844B1 Advanced current control method and apparatus for a motor drive system |
| 03/04/2009 | CN201204565Y High-efficiency intelligent motor power-saver |
| 03/04/2009 | CN201202392Y Motor control device |
| 03/04/2009 | CN101378246A Motor control device |
| 03/04/2009 | CN101378245A Control method and device for induction machine |
| 03/04/2009 | CN101378239A Method and apparatus for controlling rotor position of electric machine |
| 03/03/2009 | US7498775 Electric machine |
| 02/26/2009 | US20090051311 System and method for determining stator winding resistance in an ac motor |
| 02/25/2009 | CN101373943A Drive control circuit for electric motor |
| 02/25/2009 | CN100464487C Inverter control method and its device |
| 02/24/2009 | US7495412 Motor driving using discrete time oscillator |
| 02/24/2009 | US7495404 Power factor control for floating frame controller for sensorless control of synchronous machines |
| 02/19/2009 | WO2009023190A1 Single switch controlled switched reluctance machine |
| 02/12/2009 | DE102007037181A1 Mechatronical overdrive for e.g. electrically driven road vehicle, has converter fed rotating field machine for performing field weakening operation within region, where number of turns per unit length effective at clamp is minimized |
| 02/11/2009 | EP2021270A1 Circuit device for a braked motor |
| 02/11/2009 | EP1232559B1 Energy conserving motor controller |
| 02/11/2009 | CN101363161A Motor control device for driving sliding frame of flat-knitting machine |
| 02/11/2009 | CN100461617C Air conditioner AC machine driving method and circuit |
| 02/11/2009 | CN100461616C Electronic driving system of electromotor in household washing machine |
| 02/11/2009 | CN100461611C Method and system for starting a sensorless motor |
| 02/05/2009 | US20090033265 Monitoring Unit for Monitoring the Load of an Electric Motor |
| 02/04/2009 | EP1240711B1 Method and system for programming a motor controller |
| 01/29/2009 | US20090027935 Polyphase Inverter, Control Method Thereof, Air Sending Device and Polyphase Current Output System |
| 01/29/2009 | US20090026997 Control apparatus for reluctance type synchronous motor |
| 01/29/2009 | DE102007035476A1 Verfahren zum Betreiben einer Druckmaschine A method of operating a printing press |
| 01/28/2009 | EP2018573A1 Drive system for an electronic domestic appliance |
| 01/28/2009 | CN201188599Y Power-saving controller for electric motor |
| 01/28/2009 | CN101355341A Electric motor systems |
| 01/28/2009 | CN101355339A Motor controller |
| 01/28/2009 | CN100456605C Motor driving device and apparatus including same device |
| 01/27/2009 | US7482777 Motor control device |
| 01/22/2009 | US20090021208 On-line measurement of an induction machine's rotor time constant by small signal d-axis current injection |
| 01/22/2009 | US20090021205 Electronic motor controller |
| 01/22/2009 | DE102007033467A1 Reglereinrichtung für Antriebsmotoren Controller means for driving motors |
| 01/21/2009 | EP2017869A2 Safety device using multiple channels to control a safety device |
| 01/21/2009 | EP2017868A1 Three-phase power output stage |
| 01/21/2009 | EP2017867A2 Measuring device for measuring a periodic analogue signal |
| 01/15/2009 | WO2009009232A2 System and method for determining stator winding resistance in an ac motor |
| 01/15/2009 | CA2689531A1 System and method for determining stator winding resistance in an ac motor |
| 01/14/2009 | EP1538963A4 Variable speed leaf blower |
| 01/14/2009 | CN201181926Y Automatic gear shifting system of paper chipper |
| 01/14/2009 | CN101346106A Adaptive drive system using current values for a personal care appliance |
| 01/14/2009 | CN101345509A Driving device and method |
| 01/14/2009 | CN101345445A Stator winding multi-capacity dynamic matching load safety electricity-saving type motor |
| 01/08/2009 | DE102007031268A1 Electronic reversing contactor assembly for controlling alternating current motor, has micro controller and switching relays that are so controlled that switching operations of relay occurs at time of zero passage of phases of line voltage |
| 01/07/2009 | CN201178397Y General intelligent frequency conversion control energy saving apparatus |
| 01/07/2009 | CN201178396Y Intelligent energy saving control apparatus of oil pumping machine dragging equipment |
| 01/07/2009 | CN201178395Y Automatic motor controlling apparatus by remote network |
| 01/07/2009 | CN100449934C Method for the controlled application of a stator-current target value and a torque target value for a polyphase machine that is supplied by an electronic power converter |
| 01/02/2009 | DE202007011641U1 Ansteuerbare Antriebsvorrichtung Controllable drive device |
| 01/01/2009 | US20090001925 Power Conversion Circuit |
| 12/31/2008 | CN201174682Y Intelligent motor controller |
| 12/31/2008 | CN201174681Y Slip ratio controlling digital intelligent speed regulating device for motor with electric grid fast switching function |
| 12/31/2008 | CN101336511A Motor drive device and control method thereof |
| 12/31/2008 | CN100448160C Motor operation control device |
| 12/30/2008 | US7471526 Method and apparatus to reduce PWM voltage distortion in electric drives |
| 12/25/2008 | US20080315822 Rotor position detection at standstill and low speeds using a low power permanent magnet machine |
| 12/24/2008 | EP2005561A2 Drive and evaluation unit |
| 12/24/2008 | CN101330272A Oil pump systems and methods for preventing torque overload in motors of oil pump systems |
| 12/18/2008 | US20080309279 Motor controller |
| 12/17/2008 | EP2003771A1 Closed loop sensorless control of permanent magnet synchronous motors |
| 12/11/2008 | US20080303467 Motor control device |
| 12/11/2008 | US20080303465 Drive control system of an electric vehicle |
| 12/10/2008 | CN101320956A Method for operating a three-phase rotating electric machine and device for implementing the method |
| 12/10/2008 | CN100442187C Device for changing delivered fluid pressure of spray scrubber |
| 12/04/2008 | WO2008146336A1 Rotational position detecting method for ac servomotor and simple encoder |
| 12/04/2008 | US20080297958 Motor controller and electric power steering apparatus |
| 12/04/2008 | DE102008022685A1 Motorsteuerungs- Verfahren und Vorrichtung dafür Motor control method and apparatus therefor |
| 12/03/2008 | EP1911058B1 Safety switching unit for controlling a safety device into a safe state |
| 12/03/2008 | EP0848492B1 Method for diagnosing abnormality of circuit member of inverter driving controller for driving and controlling motor |
| 12/03/2008 | CN101316094A Apparatus, systems, and methods for reducing voltage source inverter losses |
| 12/02/2008 | US7459878 Method and circuit for controlling sensorless single-phase BLDCM |
| 11/27/2008 | US20080290823 Method of Controlling a Roller Blind Actuator |
| 11/27/2008 | DE102008019568A1 Verfahren und System zum Betreiben eines Motors, um ausgewählte Impulsverhältniswerte zu vermeiden Method and system for operating an engine in order to prevent selected pulse ratio values |
| 11/25/2008 | US7456603 Phase detection circuit, resolver/digital converter using the circuit, and control system using the converter |
| 11/19/2008 | EP1992065A1 Device for simulating the symmetrical and asymmetrical impedance of an asynchronous machine |
| 11/19/2008 | CN201153246Y High-voltage frequency-converting speed-regulating apparatus capable of realizing measurement of remote monitoring energy saving |
| 11/19/2008 | CN101309067A Motor vibration suppression method based on imaginary power current compensation |
| 11/19/2008 | CN101309065A Electricity-saving controller for electric motor |
| 11/19/2008 | CN100435477C Electric motor speed and direction controller and method |
| 11/19/2008 | CN100435469C Method and arrangement in connection with slip-ring motor |
| 11/19/2008 | CN100435462C Voltage conversion device, voltage conversion method, and computer-readable recording medium containing program for causing computer to execute voltage conversion control |
| 11/18/2008 | US7451609 Method of controlling compressor and controller |
| 11/13/2008 | WO2008135138A1 Method and device for determining the motor constant of an electric motor |
| 11/12/2008 | EP1990908A1 Rotary electric system designed to utilize zero-phase circuit |
| 11/12/2008 | EP0948124B1 Motor controller |
| 11/12/2008 | CN201150046Y Control module of industry high-efficiency variable-frequency control system display unit |
| 11/12/2008 | CN101304232A Apparatus and method for automatically recognizing AC servo motor model number and parameter |
| 11/12/2008 | CN101304225A Motor energy-saving converting controller and control method |
| 11/12/2008 | CN100433540C AC motor control method and control device |
| 11/12/2008 | CN100433539C Motor control apparatus and electric appliance using the same |
| 11/12/2008 | CN100433538C Drive circuit of PWM motor |
| 11/12/2008 | CN100433537C Method for controlling bearing-less AC asynchronous motor neural network inverse decoupling controller |