| Patents for H02P 27 - Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage (13,284) |
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| 05/08/2008 | WO2008052388A1 Control method of electromotor |
| 05/08/2008 | US20080104983 Multiphase Current Supplying Circuit, Driving Apparatus, Compressor, And Air Conditioner |
| 05/08/2008 | DE102007000458A1 Steuerungsvorrichtung für einen Turbolader mit elektrischem Motor Control device for a turbocharger with an electric motor |
| 05/07/2008 | CN101174814A Stepless gear and method of electric motor |
| 05/07/2008 | CN101174813A Energy-saving control method of oil pumping machine |
| 05/07/2008 | CN101174811A Electric motor control method and device adopting space vector pulse width modulation |
| 05/07/2008 | CN101174794A Power supply circuit and control circuit for use in the same |
| 05/07/2008 | CN101174785A Brushless motor |
| 05/07/2008 | CN100386951C Electric motor |
| 05/06/2008 | US7368889 Motor control apparatus and control method thereof |
| 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 |
| 05/01/2008 | US20080100257 Electric motor system implementing vector and slip control |
| 04/30/2008 | CN201054561Y An electromotor energy-saving digital control system |
| 04/30/2008 | CN201053408Y Household electric fan timely speed-variable device |
| 04/30/2008 | CN201053052Y Multi-motor control and transmission device for twisting machine |
| 04/30/2008 | CN101171743A Motor control device |
| 04/30/2008 | CN101170293A Motor drive device for washing and drying machine |
| 04/29/2008 | US7365508 Motor, actuator and controller thereof |
| 04/24/2008 | WO2008047439A1 Power converter |
| 04/24/2008 | WO2008047438A1 Vector controller of permanent magnet synchronous motor |
| 04/24/2008 | WO2008047430A1 Power converter |
| 04/24/2008 | WO2008046701A1 Method and device for electrically powering at least one induction machine on board an aircraft |
| 04/24/2008 | US20080094762 Power Supply Apparatus With Function of Detecting Abnormality of Current Sensor |
| 04/24/2008 | US20080094023 Method and apparatus for pwm control of voltage source inverter to minimize current sampling errors in electric drives |
| 04/24/2008 | US20080094022 Insulation-resistance degradation detecting device for motors |
| 04/24/2008 | US20080094021 Mitigation of Harmonic Currents and Conservation of Power in Non-Linear Load Systems |
| 04/24/2008 | US20080094017 3-Phase Solar Converter Circuit and Method |
| 04/24/2008 | CA2666094A1 Method and device for electrically powering at least one induction machine on board an aircraft |
| 04/23/2008 | EP1914873A1 Polyphase inverter, control method therefor, blower, and polyphase current output system |
| 04/23/2008 | CN201051737Y High frequency vibrator power control cabinet |
| 04/23/2008 | CN201051736Y Three-phase AC electromotor three-phase AC cut wave frequency conversion speed-adjusting device |
| 04/23/2008 | CN201051705Y Air car DC motor structure |
| 04/23/2008 | CN201050444Y Wind-driven generator variable pitch control system |
| 04/23/2008 | CN101166008A Motor drive device and motor drive device for washing and drying machine |
| 04/23/2008 | CN101166004A Electric power converter apparatus |
| 04/23/2008 | CN101165505A Insulation-resistance degradation detecting device for motors |
| 04/23/2008 | CN100384082C Method and apparatus for controlling AC induction motor energy-saving operation |
| 04/17/2008 | US20080088269 Motor Controller |
| 04/16/2008 | CN201048363Y Timing speed-regulating switch |
| 04/16/2008 | CN201048356Y Quiet power supply of electric clipper |
| 04/16/2008 | CN101162886A Frequency transformator running status displacing control method |
| 04/16/2008 | CN100382428C Motor controller and method of detecting deviation from controlled state |
| 04/16/2008 | CN100382427C Motor drive apparatus capable of accurately estimating demagnetization of permanent magnet motor |
| 04/15/2008 | US7358700 Induction motor controller |
| 04/15/2008 | US7358698 Field-winding type of synchronous machine |
| 04/10/2008 | WO2008040131A1 Method and switching arangement for the feedback of commutation energy of three-phase current drive systems with a current intermediate circuit converter |
| 04/09/2008 | CN101160709A Inverter and programming device thereof |
| 04/09/2008 | CN101159425A Elevator staircase group frequency conversion drive united power supply energy-saving operation method and apparatus |
| 04/09/2008 | CN101159424A SVPWM control method of electric motor control and controller employing the same |
| 04/08/2008 | US7355869 Voltage conversion device and computer-readable recording medium having program recorded thereon for computer to control voltage conversion |
| 04/08/2008 | US7355826 Power supply apparatus capable of detecting abnormality of current flowing through drive circuit |
| 04/08/2008 | US7355436 Method for error detection in a drive mechanism |
| 04/03/2008 | WO2008038338A1 Permanent magnet synchronization motor vector control device |
| 04/03/2008 | WO2008037205A1 A soft ice cream machine with frequency-converting control function |
| 04/03/2008 | US20080079377 Motor drive control with a single current sensor using space vector technique |
| 04/03/2008 | US20080079375 Rotary electric apparatus having rotor with field winding inducing current therethrough for generating magnetic field |
| 04/02/2008 | EP1906523A1 Controller of field winding type synchronous motor, electric drive system, electric four wheel driving vehicle, and hybrid automobile |
| 04/02/2008 | CN201044424Y Non-sensor vector control frequency converter |
| 04/02/2008 | CN201044422Y Intelligent general frequency converter |
| 04/02/2008 | CN201044416Y Frequency converter special for draught fan and water pump |
| 04/02/2008 | CN101156313A Electric power steering system |
| 04/02/2008 | CN101154919A Use method of electric motor |
| 04/02/2008 | CN101154918A Energy-saving method for use of electric motor |
| 04/02/2008 | CN101154917A Method and apparatus for PWM control of voltage source inverter to minimize current sampling errors in electric drives |
| 04/02/2008 | CN101154916A Method for forming high-torque high-efficiency high-voltage variable-power intelligent-driving motor system |
| 04/02/2008 | CN101154915A Motor speed-controlling device and method for electric fan |
| 04/02/2008 | CN101154913A Methods and system for motor drive information capture |
| 04/02/2008 | CN101154911A 电动机控制装置 A motor control unit |
| 04/02/2008 | CN100379144C Inverter controller and oil extraction machine having the same |
| 04/02/2008 | CN100379143C Inverter controller and oil extraction machine having the same |
| 04/02/2008 | CN100379142C Method and device for sensorless vector control for AC motor |
| 04/01/2008 | US7352188 Electrically operated vehicle abnormality judging device |
| 03/27/2008 | US20080076629 Vehicle and control method of vehicle |
| 03/27/2008 | US20080074076 Power control for induction motors using variable frequency AC power |
| 03/27/2008 | US20080074075 Methods and system for motor drive information capture |
| 03/27/2008 | US20080074074 Integrated power conditioning system and housing for delivering operational power to a motor |
| 03/27/2008 | DE102007036023A1 Alternating-current motor controlling method for voltage source inverter system, involves providing voltage to motor on basis of pulse rate, where pulse rate is selected such that wave current is minimized to sampling time |
| 03/26/2008 | EP1903671A2 Motor control method and motor controller |
| 03/26/2008 | EP1903670A1 Secondary battery control device and control method |
| 03/26/2008 | CN201041997Y Middle voltage frequency conversion speed-adjustable device for wind blower and water pump |
| 03/26/2008 | CN201041984Y Dual three level phase shift high-voltage high-power frequency converter |
| 03/26/2008 | CN101151796A High-phase order generator |
| 03/26/2008 | CN101149197A Frequency changing refrigeration system energy regeneration control device |
| 03/26/2008 | CN101149115A 车辆及车辆的控制方法 Vehicles and vehicle control method |
| 03/26/2008 | CN100377493C Rotating magnetic field type driver for active controlling torsional vibration of rotational axis system |
| 03/25/2008 | US7348756 Advanced current control method and apparatus for a motor drive system |
| 03/25/2008 | US7348755 Time sliced DSP operation for very high frequency pulse width modulated controllers |
| 03/25/2008 | US7348749 Control device for synchronous motor |
| 03/20/2008 | DE10133710B4 Steuervorrichtung, Überwachungsgerät und Steuerverfahren für einen Induktionsmotorantrieb ohne Geschwindigkeitssensor Control device, monitoring device and control method for an induction motor drive without speed sensor |
| 03/19/2008 | CN201039081Y Frequency conversion speed-adjusting circuit for mine lifter |
| 03/19/2008 | CN201039080Y Borer AC frequency conversion system for self-lifting artesian well platform |
| 03/19/2008 | CN201039079Y Frequency conversion control device for motor dragging system |
| 03/19/2008 | CN201039078Y Small-level and multiple capacity-enhancing high and middle voltage frequency conversion speed-adjusting integrated device |
| 03/19/2008 | CN201039077Y Motor power saver |
| 03/19/2008 | CN201039075Y Motor power-saving controller |
| 03/19/2008 | CN201039060Y PWM motor drive circuit for different frequency |
| 03/19/2008 | CN201039056Y Intelligent power-saving device for controllable multiple wind blower/water pump |
| 03/19/2008 | CN201039046Y High-voltage frequency conversion start cabinet |
| 03/19/2008 | CN201039020Y General mechanical high-voltage frequency converter |