| 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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| 12/17/2009 | US20090309536 Variable voltage supply system |
| 12/17/2009 | US20090309535 Motor control apparatus and motor control method |
| 12/17/2009 | US20090309525 Drive for motor |
| 12/17/2009 | US20090309524 System and Method for Adding Voltages of Power Modules in Variable Frequency Drives |
| 12/16/2009 | EP2133251A1 Controller and control method of hybrid vehicle |
| 12/16/2009 | CN201365225Y Crane self-excitation brake control cabinet |
| 12/16/2009 | CN201365224Y Control circuit of rotor field directional vector frequency converter with no speed sensor |
| 12/16/2009 | CN201364850Y Cylindrical linear induction motor control device of high-voltage circuit breaker |
| 12/16/2009 | CN101604954A Comprehensive method for vector or direct torque control of doubly-fed wind generator |
| 12/16/2009 | CN101604953A Comprehensive method for vector or direct torque control of permanent magnetism type wind generator |
| 12/16/2009 | CN101602246A Power-saving accelerator of injection molding machine |
| 12/15/2009 | CA2265227C Two-dimensional variable limit proportional internal regulator |
| 12/10/2009 | WO2009147186A1 Method for recovering power in a variable speed drive |
| 12/10/2009 | US20090302791 Device for controlling a polyphase synchronous rotary electrical machine and polyphase synchronous rotary electrical machine containing such a device |
| 12/10/2009 | DE19928481B4 Verfahren zur vereinfachten feldorientierten Regelung von Asynchronmaschinen Simplified method for field-oriented control of induction motors |
| 12/10/2009 | DE102008024250A1 Stator winding resistance measuring method for electrical asynchronous machine, involves embossing direct voltage portion into voltage-and current system so that direct current portion is measured, by pre-setting of value for output voltage |
| 12/09/2009 | EP2131489A1 Drive controller and drive control method of motor |
| 12/09/2009 | EP2131488A1 Controller of electric vehicle |
| 12/09/2009 | CN201360236Y Cigarette packaging machine alternating current motor control device |
| 12/09/2009 | CN201360235Y Inverter applicable to AC compressor |
| 12/09/2009 | CN201360234Y Cigarette packaging machine strap control device |
| 12/09/2009 | CN201358908Y Deceleration or variable speed starter |
| 12/09/2009 | CN201358165Y Control device for hydraulic system of fuel oiling machine |
| 12/09/2009 | CN201356970Y Electric roller skate |
| 12/09/2009 | CN101599740A Circuit control method of juice squeezer and control circuit thereof |
| 12/09/2009 | CN101599738A Method for determining duty ratio of universal pulse width controlled by three-phase AD motor PWM |
| 12/09/2009 | CN100568707C Household economical electric washer with speed-adjuster driven |
| 12/09/2009 | CN100568706C Method for measuring the angular speed of an induction motor |
| 12/08/2009 | US7629761 System for measuring current in multiple motor coils using a single sensing element |
| 12/03/2009 | WO2009145270A1 Motor control device, and electric steering device |
| 12/03/2009 | WO2009144957A1 Synchronous electric motor drive system |
| 12/03/2009 | WO2009144946A1 Synchronous motor drive system |
| 12/03/2009 | WO2009144803A1 Swivel drive controller and construction machine including the same |
| 12/03/2009 | WO2009144782A1 Swing drive controller and construction machine including the same |
| 12/03/2009 | DE102008027697A1 Multi phase direct current converter i.e. three phase direct current converter, controlling method for counterbalance fork-lift truck with internal combustion engine driven drive system, involves displacing control signals at time period |
| 12/03/2009 | DE102008027696A1 Mobile work machine e.g. industrial truck, has direct current converter that includes three phases and is controlled by detected reference phase and phase difference currents, where one of phases is reference phase |
| 12/02/2009 | EP2128971A2 Systems and methods for controlling a converter for powering a load |
| 12/02/2009 | CN101595633A Electric motor control apparatus |
| 12/02/2009 | CN101595632A Method and apparatus for controlling a motor |
| 12/02/2009 | CN101594116A Double-core and split surge torsion runaway frequency conversion inhibiting system for high voltage motor of power plant |
| 12/02/2009 | CN101594115A Energy-saving device and method applied to numerical control system |
| 12/02/2009 | CN101593615A Control device for operation of on-load tap changer and control method thereof |
| 12/02/2009 | CN101592922A Device and method for supporting energy-saving operation and showing power-saving effect of energy-saving operation |
| 12/02/2009 | CN100566130C An electric motor movement controlling method, an electric motor movement controlling system and a compressor |
| 12/02/2009 | CN100566129C Constant slip frequency vector control method and system for linear induction motor |
| 12/02/2009 | CN100566128C AC rotating machine control device and method |
| 12/02/2009 | CN100566123C Method and arrangement in connection with slip-ring motor |
| 12/02/2009 | CN100566112C Drive system for multi-phase brush-less motor containing multi-phase |
| 12/02/2009 | CN100566109C Electric power converting device and motor drive device using the same |
| 11/25/2009 | EP2124328A1 Apparatus and Method for Mains Harmonic Reduction in AC Drive Circuits |
| 11/25/2009 | EP2122823A1 Method and apparatus for controlling a motor |
| 11/25/2009 | CN201352780Y Undisturbed switching intelligent frequency control system for medium-voltage motor |
| 11/25/2009 | CN201352758Y Protection for speed control actuator |
| 11/25/2009 | CN101589546A Motor control device, control method, and control program |
| 11/25/2009 | CN101589542A Power supply with two series inverters for a polyphase electromechanical actuator |
| 11/25/2009 | CN101588140A Inverter module with thermally separated semiconductor devices |
| 11/24/2009 | US7622886 Method for determination of the risk to disturbance-free operation of a frequency converter |
| 11/24/2009 | US7622884 Methods for managing electrical power |
| 11/24/2009 | US7622879 Thermal protection apparatus and method for hybrid vehicles |
| 11/19/2009 | WO2009139146A1 Electric vehicle control device |
| 11/19/2009 | US20090284213 Power module layout for automotive power converters |
| 11/19/2009 | US20090284202 Motor Control Device, Control Method, and Control Program |
| 11/19/2009 | US20090284188 Method and Apparatus to Facilitate Controlling the Connection of a Mains to a Movable Barrier Operator Power Supply |
| 11/19/2009 | DE102008022928A1 Drive has intermediate voltage circuit converter and electric motor which is attached at terminals with outputs of load-side pulse power converter, where converter output-side measuring current is provided with signal input |
| 11/18/2009 | EP2120331A1 Inverter system for vehicle-mounted air conditioner |
| 11/18/2009 | EP2119914A1 Inverter compressor operation method and compressor drive device |
| 11/18/2009 | EP2119587A1 Controller for motor, and vehicle |
| 11/18/2009 | EP2118995A1 Method and system to start multiple ac motors supplied by a power converter via a common ac bus |
| 11/18/2009 | EP2118449A1 Power plant comprising a consumer and method for operating said power plant |
| 11/18/2009 | CN201349197Y Digital alternating current silicon controlled speed-regulating control device |
| 11/18/2009 | CN201349196Y Power tool and control module for same |
| 11/18/2009 | CN201349192Y Position measuring and speed measuring and controlling device for rotor of synchronous motor |
| 11/18/2009 | CN201346500Y Common DC bus AC frequency control system of decanter centrifuge |
| 11/18/2009 | CN101584106A System and method to extend synchronous operation of an active converter in a variable speed drive |
| 11/18/2009 | CN101582679A Composite power inverter with linear output and PWM output |
| 11/18/2009 | CN101582678A Ac motor driving circuit and electric vehicle driving circuit |
| 11/18/2009 | CN101582667A Petroleum extractor super capacitor auxiliary power system |
| 11/18/2009 | CN101582650A Power converter |
| 11/17/2009 | CA2598099C Electric power converter apparatus |
| 11/13/2009 | CA2665856A1 Voltage source inverter and medium voltage pre-charge circuit therefor |
| 11/12/2009 | WO2009135342A1 A system for realizing simultaneously frequency variation and speed adjusting of rotors and making one inverter drive asynchronously four motors |
| 11/12/2009 | US20090278484 Fan conducted noise reduction |
| 11/12/2009 | US20090278483 Control apparatus for electric vehicles |
| 11/11/2009 | EP2117113A1 Cycloconverter generator |
| 11/11/2009 | EP2117112A1 Cycloconverter generator |
| 11/11/2009 | EP2117111A1 Superconductive rotating electric machine drive control system and superconductive rotating electric machine drive control method |
| 11/11/2009 | EP2117110A2 System for generating electrical energy |
| 11/11/2009 | EP2117101A1 Integrated electric compressor |
| 11/11/2009 | EP2115814A1 Method for obtaining a predetermined position of an antenna |
| 11/11/2009 | EP1283594B1 Motor controller |
| 11/11/2009 | CN201345572Y Flameproof and intrinsically safe variable frequency motor |
| 11/11/2009 | CN201344969Y Debugging device of special frequency converter for jet loom |
| 11/11/2009 | CN101578759A Load device control device and vehicle |
| 11/11/2009 | CN101578191A Vehicle and on-vehicle drive device |
| 11/11/2009 | CN101577522A Apparatus for carrying out improved control of rotary machine |
| 11/11/2009 | CN101577518A Speed regulating system of high power factor load current-change synchronous motor |
| 11/11/2009 | CN100559698C Motor and motor drive system |
| 11/10/2009 | US7616466 Three phase inverter with improved loss distribution |
| 11/05/2009 | WO2009133700A1 Inverter control device and power conversion device |
| 11/05/2009 | WO2009103504A3 Wind energy plant having a double-energized asynchronous generator and converter control |