| 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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| 09/24/2009 | US20090237027 Induction motor control device |
| 09/24/2009 | US20090237020 Driving device for synchronous motors |
| 09/24/2009 | US20090237019 Motor drive control apparatus, vehicle equipped with motor drive control apparatus, and motor drive control method |
| 09/24/2009 | US20090237017 Circuit Unit for Driving an Electronically Commutated Fan Motor |
| 09/24/2009 | US20090237016 Motor controller |
| 09/24/2009 | DE102009000607A1 Entladung eines DC-Busses in einem Elektromotorsystem Discharge of a DC bus in an electric motor system |
| 09/24/2009 | DE102008050364A1 Regeneratives Energiesystem für das Absenken von Lasten mit einer Schaltung zum Auf- und Entladen eines Kondensators und einem Verfahren zum Betreiben desselben The same regenerative energy system for the lowering of loads with a circuit for charging and discharging of a capacitor and a method for operating |
| 09/23/2009 | EP2104222A1 Method and device for controlling a brushless AC motor |
| 09/23/2009 | EP2104217A2 Motor controller |
| 09/23/2009 | CN101540583A 马达控制器 Motor Controller |
| 09/23/2009 | CN101540577A Method and system for proportional linkage of frequency converters of pulley-type wire-drawing machines |
| 09/23/2009 | CN100544188C Pulse width modulation frequency changing driving system for economical AC motor |
| 09/17/2009 | WO2009113509A1 Inverter device |
| 09/17/2009 | WO2009113452A1 Electric motor drive device and control method thereof |
| 09/17/2009 | WO2009113431A1 Electric power steering device |
| 09/17/2009 | WO2009057866A3 Method for controlling motor of air conditioner and motor controller of the same |
| 09/17/2009 | WO2009051320A3 Motor controller of air conditioner and method of the motor controller |
| 09/17/2009 | US20090230913 Dc bus discharge in an electric motor system |
| 09/17/2009 | US20090230909 Redundant dc bus discharge for an electric motor system |
| 09/17/2009 | US20090230903 Inverter controller and method for operating the same |
| 09/17/2009 | US20090230902 Inverter system for vehicle-mounted air conditioner |
| 09/17/2009 | US20090230901 Power Source Apparatus for Vehicle, Vehicle and Method of Controlling Power Source Apparatus |
| 09/17/2009 | DE102008013955A1 Converter for excitation of electrical motor, has timer-compare-unit exhibiting high clock frequency than frequency related to periodic time interval and than reciprocal value of periodic time interval |
| 09/16/2009 | EP2100370A1 Method and apparatus for current measurement in an in particular polyphase electrical system |
| 09/16/2009 | CN201312283Y High-power intelligent electricity economizer start control device |
| 09/16/2009 | CN201312282Y Speed changing system of static frequency converter |
| 09/16/2009 | CN101536304A Variable speed drive for subsea applications |
| 09/16/2009 | CN101534091A Mine flameproof and intrinsic safety type variable frequency speed control device |
| 09/16/2009 | CN101534085A Three-phase switch reluctance motor power circuit with two power switches connected in series |
| 09/16/2009 | CN101534084A Redundant DC bus discharge for an electric motor system |
| 09/16/2009 | CN101534083A DC bus discharge in an electric motor system |
| 09/16/2009 | CN101534029A Polyphase induction motor with large capacity and high torque density |
| 09/16/2009 | CN101533064A Longevity diagnostic device of power conversion apparatus |
| 09/15/2009 | US7588124 Speed control method of elevator-purpose inverter and speed control apparatus thereof |
| 09/11/2009 | WO2009110533A1 Electric power steering apparatus |
| 09/11/2009 | WO2009110479A1 Electric vehicle driving device |
| 09/10/2009 | US20090228149 Environmental control and power system |
| 09/10/2009 | US20090228147 Apparatus and Method for Controlling Air Conditioner |
| 09/10/2009 | US20090224721 Varying flux versus torque for maximum efficiency |
| 09/10/2009 | US20090224720 Ac voltage output apparatus and hybrid vehicle including the same |
| 09/10/2009 | US20090223235 Four Terminal Hermetic Bushing For Use With Single-Phase Electrical Service Line And Three-Winding Motor |
| 09/09/2009 | EP0988677B1 Safety device for a drive mechanism |
| 09/09/2009 | CN101529715A Power converter |
| 09/09/2009 | CN101529714A Vector controller of permanent magnet synchronous motor |
| 09/09/2009 | CN101527539A Speed adjustment control system of anti-inversion failure seamless switching motor and control method thereof |
| 09/09/2009 | CN101527537A Method for adjusting pulse width by capturing three-phase current information and system for modulating pulse width |
| 09/09/2009 | CN101527518A Frequency converter device with high-resolution variable voltage/frequency control |
| 09/09/2009 | CN100539392C Motor control apparatus |
| 09/09/2009 | CN100539386C An induction motor control system |
| 09/08/2009 | US7587263 Driving controller for a vehicle |
| 09/08/2009 | US7586287 Computer housing temperature control device |
| 09/08/2009 | US7586286 Method and apparatus for motor control |
| 09/08/2009 | US7586282 Hardware based configurable motion control apparatus and method |
| 09/03/2009 | WO2009107461A1 Direct ac power converter |
| 09/03/2009 | WO2009107233A1 Driving controller of ac motor |
| 09/03/2009 | WO2009106673A1 Power supply arrangement |
| 09/03/2009 | US20090218977 Electric drive system with redundancy |
| 09/03/2009 | US20090218967 Motor Drive Circuit |
| 09/03/2009 | CA2714709A1 Driving controller for ac motor |
| 09/02/2009 | EP2096751A1 Electric motor car control apparatus |
| 09/02/2009 | CN201303313Y Intelligent frequency variable control special motor |
| 09/02/2009 | CN201303312Y Double two-phase permanent-magnet asynchronous motor driving device |
| 09/02/2009 | CN201303311Y Double two-phase asynchronous motor power supply device |
| 09/02/2009 | CN101523717A Power converter |
| 09/02/2009 | CN101523716A Method and device for electrically powering at least one induction machine on board an aircraft |
| 09/02/2009 | CN101521484A Flameproof four-quadrant variable frequency speed governor |
| 09/02/2009 | CN101521483A Motor driver |
| 09/02/2009 | CN101521469A Power supply circuit, module using same, motor drive apparatus and air conditioner |
| 09/02/2009 | CN100536316C Motor driving device and automobile using the same |
| 09/02/2009 | CN100536315C Permanent-magnetic synchronous motor weak magnetic control system based on A. C. indirect control |
| 08/27/2009 | WO2009104553A1 Permanent magnet type rotary motor, assembly method for permanent magnet type rotary motor, disassembly method for permanent magnet type rotary motor, and permanent magnet type rotary motor drive system |
| 08/27/2009 | WO2009104529A1 Permanent magnet type dynamo electric machine, method for assembling permanent magnet type dynamo electric machine, method for disassembling permanent magnet type dynamo electric machine and permanent magnet motor drive system |
| 08/27/2009 | WO2009104452A1 Motor drive control device |
| 08/27/2009 | US20090213564 Drive device control unit |
| 08/27/2009 | US20090213513 Speed controller including a device for protection against overcurrents and overvoltages |
| 08/27/2009 | US20090212726 Device for protecting a speed controller against overcurrent |
| 08/27/2009 | US20090212725 Drive System and Method for Operating a Drive System for an Electronically Operated Vehicle |
| 08/27/2009 | CA2715996A1 Wind energy plant having a double-energized asynchronous generator and converter control |
| 08/26/2009 | EP2092634A1 Method and device for electrically powering at least one induction machine on board an aircraft |
| 08/26/2009 | CN201296821Y Roving machine with transducer |
| 08/26/2009 | CN101515782A Phase voltage difference value type SVPWM control method for asynchronous motor |
| 08/26/2009 | CN101515781A Universal servocontrol platform device for motor-operating mechanism of high-voltage switch apparatus and method |
| 08/26/2009 | CN100533947C Ac rotary machine constant measuring apparatus |
| 08/26/2009 | CN100533946C Charge and discharge control device |
| 08/25/2009 | US7579805 Semiconductor device |
| 08/25/2009 | US7579804 Method to measure the angular speed of an induction motor |
| 08/25/2009 | US7579800 Motor control method and device thereof |
| 08/25/2009 | US7579798 Inverter for washer and inverter for washer-drier |
| 08/20/2009 | WO2009102535A1 Waveform current monitor using rdson of low-side bridge fet |
| 08/20/2009 | WO2009101859A1 Inverter device and method for controlling the same |
| 08/20/2009 | WO2009101781A1 Control device of compressor and refrigerator having the same |
| 08/20/2009 | US20090206781 Alternating current motor drive circuit and electric vehicle drive circuit |
| 08/19/2009 | CN201294484Y Motor driver and vehicle with the driver |
| 08/19/2009 | CN201291752Y Speed regulating device of input power distribution type hybrid electric vehicle |
| 08/19/2009 | CN101510752A Application device of variable frequency controller for electric fan |
| 08/19/2009 | CN101510751A Variable frequency drive system and motor thereof |
| 08/19/2009 | CN100530937C Motor driving apparatus |
| 08/19/2009 | CN100530936C Power supply circuit of an electric and corresponding control method |
| 08/18/2009 | US7576511 Motor control device and motor control method |
| 08/18/2009 | US7574873 Inverter device and air conditioner using inverter device |