| 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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| 10/09/2008 | US20080246431 Apparatus and method of driving compressor |
| 10/09/2008 | US20080246430 Electric vehicle drive apparatus |
| 10/08/2008 | EP1978254A1 Electric compressor |
| 10/08/2008 | EP1649590B1 Load driver capable of suppressing overcurrent |
| 10/08/2008 | CN201130923Y Frequency speed control system |
| 10/08/2008 | CN201130922Y Electric control cabinet |
| 10/08/2008 | CN201130921Y Low-voltage alternating current drive device for oil-well rig |
| 10/08/2008 | CN201128637Y Active unwinding device |
| 10/08/2008 | CN101282093A PWM control method for tandem multi-level inverter |
| 10/08/2008 | CN100424988C Control and protection of a doubly-fed induction generator system |
| 10/08/2008 | CN100424980C Apparatus for compensating for speed error of motor |
| 10/07/2008 | US7432678 Motor driving apparatus and control method thereof |
| 10/07/2008 | US7432622 Method for the wireless and contactless transport of energy and data, and corresponding device |
| 10/02/2008 | WO2008117748A1 Power generation control method of hybrid construction machine and hybrid construction machine |
| 10/02/2008 | WO2008117724A1 Electric brake device and method of controlling electric brake device |
| 10/02/2008 | WO2008117497A1 Permanent magnet rotary electric machine and permanent magnet motor drive system |
| 10/02/2008 | WO2008087270A3 Power supply with two series inverters for a polyphase electromechanical actuator |
| 10/02/2008 | WO2008008486A3 Signal conditioning apparatus and method for determination of permanent magnet motor rotor position |
| 10/02/2008 | US20080242463 Control device and control method for hybrid vehicle |
| 10/01/2008 | WO2008004419A1 Motor control device and vehicle using the same |
| 10/01/2008 | EP1974463A1 Apparatus and method for controlling operation of linear compressor |
| 10/01/2008 | EP1974462A2 Method and system of control of the converter of an electricity generation facility connected to an electricity network in the presence of voltage sags in said network |
| 10/01/2008 | EP1444770B1 Electric motor drive |
| 10/01/2008 | CN201127014Y Cutter hand operated tool embedded with constant speed machine |
| 10/01/2008 | CN201126842Y Frequency control motor of plate-coating machine |
| 10/01/2008 | CN201126768Y Mining flame-proof type intermediate voltage frequency-changing speed-regulating door electric interlocking mechanism |
| 10/01/2008 | CN201126449Y Combination test apparatus for AC/DC inverter |
| 10/01/2008 | CN101277091A Apparatus for feedback of sensor signal of high pressure frequency transformer |
| 10/01/2008 | CN101277088A 电机的驱动电路 Motor drive circuit |
| 10/01/2008 | CN101277085A Motor drive device |
| 10/01/2008 | CN101277072A Electric power transformation device and method |
| 10/01/2008 | CN100423445C Controller for AC motor and ac motor system |
| 10/01/2008 | CN100423443C Inverter device |
| 10/01/2008 | CN100423429C Power converter for electric servo control system |
| 10/01/2008 | CN100422980C Hardware based configurable motion control apparatus and method |
| 10/01/2008 | CN100422758C Device for determining constant of rotating machine |
| 09/30/2008 | US7429836 Motor driver circuit, control method thereof, and electronic apparatus |
| 09/25/2008 | WO2008114853A1 Motor drive device |
| 09/25/2008 | DE102008009316A1 System und Verfahren zur Steuerung elektrischer Antriebssysteme System and method for controlling electric drive systems |
| 09/24/2008 | CN201122931Y High voltage frequency-conversion speed-control device of high capacity electric motor |
| 09/24/2008 | CN201122930Y Full-automatic remote control linear electric motor controller |
| 09/24/2008 | CN201122922Y Driving circuit of DC compressor |
| 09/24/2008 | CN201121197Y Stove blower rolling gear |
| 09/24/2008 | CN101272126A Full speed range control method and control device of double-feedback electric motor |
| 09/24/2008 | CN101272125A Motor drive system with fault tolerance function |
| 09/24/2008 | CN101272124A Timing method and device for AC asynchronous motor |
| 09/24/2008 | CN101272123A Space vector width pulse modulation method based on FPGA |
| 09/24/2008 | CN101272122A Asynchronous motor timing method based on rotation difference linear control |
| 09/24/2008 | CN100421351C Drive control for vehicle |
| 09/23/2008 | US7427849 Controller for an electric vehicle and driving apparatus for the electric vehicle |
| 09/18/2008 | WO2008110817A2 Determining average current drawn by a motor |
| 09/18/2008 | WO2008110209A1 Method and system to start multiple ac motors supplied by a power converter via a common ac bus |
| 09/18/2008 | US20080224651 Method and system for controlling permanent magnet ac machines |
| 09/18/2008 | US20080224649 Anti-windup control for a current regulator of a pulse width modulation inverter |
| 09/18/2008 | DE102007011925A1 Process to regulate the operation of a small-scale waste water treatment plant by phase-regulation of power supply |
| 09/17/2008 | CN201118522Y 智能控制器 Intelligent Controller |
| 09/17/2008 | CN201118521Y Interconnection device for frequency conversion speed-adjusting control system |
| 09/17/2008 | CN201118520Y Steel making frequency conversion case |
| 09/17/2008 | CN201118519Y Packet car frequency converter controller for steel making |
| 09/17/2008 | CN201118518Y Automatic tracking energy-saving control device for oil drawer |
| 09/17/2008 | CN201118517Y A middle and high voltage frequency converter voltage detection circuit |
| 09/17/2008 | CN201118516Y Remote speed adjustable control circuit |
| 09/17/2008 | CN201118513Y Efficiency optimization control system for three-phase inductance electromotor |
| 09/17/2008 | CN201118511Y Intelligent energy-saving controller for immersed oil power pump |
| 09/17/2008 | CN201118510Y Light-duty voltage adjusting power device |
| 09/17/2008 | CN201118497Y Dual electromotor synchronization servo drive |
| 09/17/2008 | CN201118437Y Low-harmonic interference high-reliability cutting wave speed adjusting device |
| 09/17/2008 | CN201118230Y Integrated power saving protector constituted by three types of electricity economizer |
| 09/17/2008 | CN201118229Y Integrated power saving protector constituted by three types of electricity economizer |
| 09/17/2008 | CN101267186A Systems and methods for improved motor drive power factor control |
| 09/17/2008 | CN101267185A Serial excitation electromotor control device and its rotation speed control method |
| 09/17/2008 | CN101267183A Linear induction motor drive system |
| 09/17/2008 | CN100420147C Permasyn electric machine control system based on adaptive sliding moding structure |
| 09/16/2008 | US7425782 Electric car voltage conversion device with failure detection |
| 09/12/2008 | WO2008108159A1 Controller for motor, and vehicle |
| 09/12/2008 | WO2008108022A1 Integrated electric compressor |
| 09/12/2008 | WO2008108020A1 Inverter system for vehicle-mounted air conditioner |
| 09/12/2008 | WO2008107992A1 Controller of electric vehicle |
| 09/12/2008 | WO2008092154A3 System and method to extend synchronous operation of an active converter in a variable speed drive |
| 09/11/2008 | US20080218118 Efficiency Maximization Control and Variable Speed Drive of Single Phase Induction Motors |
| 09/11/2008 | US20080218114 Mixed Device for Controlling Power Transfer Between Two Cores of a Direct Current Network and Supplying an Alternating Current Motor |
| 09/11/2008 | US20080218111 Control Device for Motor Drive System and Electric Vehicle Including the Same |
| 09/11/2008 | DE102007011146A1 Three phase current drive, particularly asynchronous motor or synchronous motor, has winding system, which has three stator coils connected with neutral point and three connecting terminals for connecting winding system with frequency |
| 09/11/2008 | DE102007011004A1 Method for continuous and stable power supply of consumer with inductive or pulse-shaped power consumption, involves determining type and capacity of each user-defined power source |
| 09/10/2008 | EP1968186A1 Method for operating an electric machine |
| 09/10/2008 | EP1968185A2 Methods and systems for operating direct current motors |
| 09/10/2008 | EP1968180A2 Multi level inverter using cascade configuration and control method thereof |
| 09/10/2008 | EP1967406A1 Vehicle control device, vehicle, and vehicle control method |
| 09/10/2008 | EP1966812A1 Variable frequency drive system apparatus and method for reduced ground leakage current and transistor protection |
| 09/10/2008 | CN201113917Y Chopping speed governing energy-saving device |
| 09/10/2008 | CN201113916Y Multi- frequency converter common brake unit energy-saving device |
| 09/10/2008 | CN201113915Y Elevator energy-saving inversion control technique device |
| 09/10/2008 | CN201113914Y Low-voltage ac electric motor drive and control device for electric bicycle |
| 09/10/2008 | CN201113913Y Subway construction transportation locomotive alternating-current variable-frequency speed-regulating device |
| 09/10/2008 | CN201113912Y Elevator staircase group frequency conversion drive united power supply and energy-saving device |
| 09/10/2008 | CN201113911Y Ship-mounted multi- frequency converter system based on public DC bus |
| 09/10/2008 | CN201113910Y Machine controller for hybrid power automobile |
| 09/10/2008 | CN201113909Y Flame-proof type variable-frequency speed-regulating controller |
| 09/10/2008 | CN201113908Y Oil pumping machine energy-saving production-increasing frequency conversion control cabinet |
| 09/10/2008 | CN201113907Y Hoisting machine variable-frequency speed-regulating device |