| 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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| 03/19/2008 | CN201039019Y High-voltage frequency converter for wind pump |
| 03/19/2008 | CN201039018Y Energy feedback high-voltage frequency converter |
| 03/19/2008 | CN201039009Y Work frequency AC/DC power supply device for gas engine in industrial mine |
| 03/19/2008 | CN201038901Y A mixed drive car frequency conversion speed-adjusting motor and generator unit |
| 03/19/2008 | CN201038637Y Electric lift control cabinet |
| 03/19/2008 | CN201038632Y High voltage frequency conversion combination cabinet for draught fan water pump |
| 03/19/2008 | CN201038630Y High voltage frequency conversion combination cabinet for general machinery |
| 03/19/2008 | CN201038629Y Energy-feeding type high voltage frequency conversion combination cabinet |
| 03/19/2008 | CN101145755A Motor control device |
| 03/19/2008 | CN101145754A Current detecting unit and motor control device |
| 03/19/2008 | CN101143670A Electrical protection method and device during frequency-changing elevator mechanical brake disabling |
| 03/13/2008 | US20080061728 Motor control device and current detecting unit |
| 03/13/2008 | US20080061727 Motor control device |
| 03/13/2008 | DE102007020184A1 Verfahren und Vorrichtung METHOD AND DEVICE |
| 03/12/2008 | EP0922325B1 Method for controlling an asynchronous machine |
| 03/12/2008 | CN101142738A Motor drive and compressor drive |
| 03/12/2008 | CN101141112A Common DC bus based multi-frequency converter system for vessel |
| 03/12/2008 | CN101141079A 电源系统和电源系统控制方法 Power systems and power system control method |
| 03/06/2008 | WO2008026544A1 Hydraulic unit and method of controlling speed of motor in hydraulic unit |
| 03/06/2008 | WO2008026270A1 Electric motor driving device, and compressor driving device |
| 03/06/2008 | WO2008026269A1 Power converting apparatus |
| 03/06/2008 | WO2008026249A1 Ac motor vector control apparatus |
| 03/06/2008 | WO2008006745A3 Method and circuit arrangement for continuously supplying power to a brushless electric motor |
| 03/06/2008 | US20080054841 System and method for adjustable carrier waveform generator |
| 03/06/2008 | US20080054837 System and method for generating a drive signal |
| 03/05/2008 | EP1894293A1 Method and apparatus for quiet variable motor speed control |
| 03/05/2008 | CN201032710Y Variable frequency speed regulator |
| 03/05/2008 | CN201032709Y Vehicle air conditioner frequency conversion controller |
| 03/05/2008 | CN201030799Y Renewable energy sources automobile environment protection air-conditioner |
| 03/05/2008 | CN101136608A Mit motorschutzfunktion ausgestattete steuerungsvorrichtung |
| 03/05/2008 | CN101135886A Hanging cradle controller for construction using single-phase electric power |
| 03/05/2008 | CN101135314A Ceiling fan triad control device |
| 03/05/2008 | CN100373769C Power converter |
| 03/05/2008 | CN100373764C Method and device for braking washing machine |
| 03/05/2008 | CN100373762C Electric motor driver and driving method |
| 03/05/2008 | CN100373760C Control method of induction motor |
| 03/05/2008 | CN100373758C Motor control unit |
| 03/04/2008 | US7339346 Motor and drive control device therefor |
| 03/04/2008 | US7339345 Power converter topologies for better traction drive packaging |
| 03/02/2008 | CA2599126A1 Control methods for pulse width modulation (pwm) |
| 02/28/2008 | US20080048605 Switching device for linking various electrical voltage levels in a motor vehicle |
| 02/27/2008 | EP1891726A2 Voltage conversion device |
| 02/27/2008 | EP1700374B1 Starting system for a single-phase induction motor |
| 02/27/2008 | CN201029224Y Full digitized machine set cascade speed control device |
| 02/27/2008 | CN101133547A Control device |
| 02/27/2008 | CN101130411A Technology for governing speed of rewinding device |
| 02/27/2008 | CN100372228C Motor driving apparatus |
| 02/27/2008 | CN100372227C Electronic speed regulation method for mouse cage asynchronous motor |
| 02/26/2008 | US7336052 Device for powering a variable speed drive |
| 02/26/2008 | US7336050 Control system and method for permanent magnet synchronous motor |
| 02/21/2008 | WO2008020501A1 Electric motor feedback control method and apparatus |
| 02/21/2008 | WO2008020500A1 Electric motor drive control method and device |
| 02/21/2008 | DE102006038209A1 Voltage-controlled electric motor i.e. brushless direct current motor, operating method, involves determining output voltage of amplifier based on operating parameters of electric motor and measured supply voltage |
| 02/20/2008 | CN201025700Y Operation circuit for fan jigger electromotor |
| 02/20/2008 | CN201025131Y Frequency conversion startup device of steamship engine |
| 02/20/2008 | CN201024292Y AC frequency-converting motor system for industrial sewing machine |
| 02/20/2008 | CN100370690C Brushless motor without sensor |
| 02/19/2008 | US7332888 Driving apparatus for a motor |
| 02/19/2008 | US7332882 Motor drive device that combined charge controller |
| 02/14/2008 | US20080040015 Motor control apparatus and motor control method |
| 02/14/2008 | DE102007033791A1 Motorsteuervorrichtung und Motorsteuerverfahren The motor control apparatus and motor control method |
| 02/13/2008 | CN201022187Y Oil extractor special frequency converter |
| 02/13/2008 | CN201020851Y Electric screw press |
| 02/13/2008 | CN101123416A Device and control method for elevator energy saving reverse control technology |
| 02/13/2008 | CN101123415A Middle voltage electromotor cutting wave dual DSP digital speed adjusting system for IGBT reverser |
| 02/13/2008 | CN101123414A Fan speed adjusting device of microwave oven |
| 02/13/2008 | CN101123413A Controller for high-power, high voltage and five level frequency conversion voltage adjusting device |
| 02/13/2008 | CN101123412A Integrated method for vector control of induction electromotor frequency conversion under voltage and direct toque control |
| 02/13/2008 | CN101123350A An integrated power-saving protection control system |
| 02/13/2008 | CN100369376C Three-phase asynchronous motor actiyator and its speed regulation method, air conditioner using the same |
| 02/13/2008 | CN100369366C Electric machinery |
| 02/13/2008 | CN100369348C Method and system for detecting the disconnection of an auxiliary power supply from a poly-phase motor |
| 02/13/2008 | CN100369343C Garment vehicle idle power-off electricity-saving device |
| 02/12/2008 | US7330011 Motor driving apparatus |
| 02/07/2008 | US20080030165 Method and Device for Supplying a Charge with Electric Energy Recovery |
| 02/07/2008 | DE10206156B4 Motorregelvorrichtung Engine control unit |
| 02/07/2008 | DE102007027827A1 Antrieb und Verfahren Drive and procedures |
| 02/07/2008 | DE102006035891A1 Antrieb und Verfahren Drive and procedures |
| 02/07/2008 | DE102006033792A1 Frequenzumrichtergespeister Drehstrom-Asynchronmotor By frequency-phase asynchronous motor |
| 02/06/2008 | EP1885055A1 Controller of variable speed ac motor |
| 02/06/2008 | CN201018455Y Anti-interference mining variable frequency speed regulator |
| 02/06/2008 | CN201018454Y Variable frequency speed regulator for mining capable of implementing soft switch |
| 02/06/2008 | CN201018453Y Variable frequency speed regulator for mining |
| 02/06/2008 | CN201018452Y Novel power installation for railway type hoisting machinery using energy storage means |
| 02/06/2008 | CN201018451Y Variable frequency speed regulation system |
| 02/06/2008 | CN201018450Y Variable frequency energy-saving controller for oil pump |
| 02/06/2008 | CN101120504A Safety interlock and protection circuit for permanent magnet motor drive |
| 02/06/2008 | CN101119097A Method for suppressing harmonic current of high-power AC motor |
| 02/06/2008 | CN100367664C Motor system control device and control method |
| 02/06/2008 | CN100367663C Inverter system for driving induction motor |
| 02/06/2008 | CN100367655C Method and apparatus for adjustment of the rotor angle of an elevator motor |
| 02/05/2008 | US7327118 Electric machine and method of operating the electric machine |
| 02/05/2008 | US7327105 Mesh connected electrical rotating machine with span changing |
| 01/31/2008 | WO2008013167A1 Variable magnetic flux motor drive system |
| 01/31/2008 | WO2008013000A1 Inverter |
| 01/31/2008 | DE10228988B4 Resonant schaltender Umrichter Resonant switching inverter |
| 01/31/2008 | DE102006034179A1 Operating unit, particularly compressor unit, has two operating arrangements, which has electromotor and operating machine, and operating unit has frequency converter which is alternatively connected to electromotor or another electromotor |
| 01/31/2008 | DE10162170B4 Verfahren zur Steuerung eines Induktionsgenerators Method for controlling an induction generator |
| 01/31/2008 | CA2813526A1 Variable-flux motor drive system |
| 01/31/2008 | CA2659088A1 Variable-flux motor drive system |