| 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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| 08/01/2007 | CN2930099Y Energy saving variable frequency collective and distributive controller for oil field oil pumping unit |
| 08/01/2007 | CN2930098Y Multistage wall type speed regulation switch for ceiling fan |
| 08/01/2007 | CN2930097Y Power saving controller for motor |
| 08/01/2007 | CN2930096Y Intelligent AC motor current controller |
| 08/01/2007 | CN1330085C Electric motor control equipment and electric motor control method |
| 08/01/2007 | CN1330075C Motor with variable rotational speed |
| 08/01/2007 | CN101010869A Servomotor current control method and servomotor |
| 08/01/2007 | CN101010515A System and method to reduce acoustic noise in screw compressors |
| 08/01/2007 | CN101009477A Voltage space vector-based modulation method |
| 07/31/2007 | US7250740 Method and apparatus for generating pulse-width modulated waveform |
| 07/26/2007 | US20070170885 Motor control apparatus and method for generating modulation wave instruction of pwm inverter of the same motor control apparatus |
| 07/25/2007 | CN101005267A Frequency converter for different mains voltages |
| 07/25/2007 | CN101005266A Universal motor speed controller |
| 07/25/2007 | CN101005265A Intelligent powersaving device for AC motor |
| 07/25/2007 | CN101005262A Ac generator sensor-less vector control method and control device thereof |
| 07/25/2007 | CN101005258A Computer control multiple motor variable frequency and speed regulating synchronous method and its central and distributing control system |
| 07/25/2007 | CN101005244A Two phase PWM modulation method for reducing small common-mode voltage |
| 07/25/2007 | CN101003027A Energy saving device for crusher |
| 07/24/2007 | US7248016 Motor controller and steering device |
| 07/19/2007 | WO2007081103A1 Apparatus and method for controlling operation of linear compressor |
| 07/19/2007 | WO2007080728A1 Motor controller |
| 07/19/2007 | US20070165432 Voltage conversion device and computer-readable recording medium having program recorded thereon for computer to control voltage conversion by voltage conversion device |
| 07/19/2007 | US20070164701 Three-phase ac speed adjustable motor |
| 07/19/2007 | US20070164700 Starting system for a single-phase induction motor |
| 07/19/2007 | DE102006002295A1 Programmable manual hair dryer has microprocessor to determine constant functional conditions corresponding to electrical and mechanical discrepancies involved in signaling information on display, when dryer is turned ON |
| 07/19/2007 | DE10012280B4 Steuervorrichtung für einen Induktionsmotor A control apparatus for an induction motor |
| 07/18/2007 | EP1808958A2 Drive circuits |
| 07/18/2007 | EP1808957A2 Electric power conversion |
| 07/18/2007 | EP1808955A2 Inverter device |
| 07/18/2007 | EP1540809A4 Low voltage, two-level, six-pulse induction motor controller driving a medium-to-high voltage, three-or-more-level ac drive inverter bridge |
| 07/18/2007 | CN2924927Y AC frequency-change stepless speed regulation and mechanical speed-changing transmission |
| 07/18/2007 | CN101002376A Low loss propulsion system |
| 07/18/2007 | CN101001076A 逆变器装置 Inverter means |
| 07/18/2007 | CN101001075A Torque control device and method of DC variable frequency compressor |
| 07/18/2007 | CN101001068A Driving apparatus and driving system for electric motor |
| 07/17/2007 | US7245104 Position-sensorless motor control device |
| 07/17/2007 | US7245095 Control circuit of rotational speed of a fan |
| 07/17/2007 | CA2271792C Voltage clamp snubbers for three level converter |
| 07/12/2007 | US20070160354 Motor control circuit |
| 07/12/2007 | US20070159131 Vector controller for induction motor |
| 07/12/2007 | US20070158948 Power output apparatus and vehicle including the same |
| 07/12/2007 | DE102005063069A1 Air purification device for use with e.g. carbon filter, has high voltage production device electrically connected in parallel to input of fan motor, where number of revolutions of fan motor is adjustable using changeable input voltage |
| 07/12/2007 | DE102005046920B4 Antrieb mit einem Elektromotor und einer Motorelektronik Actuator with an electric motor and an engine electronics |
| 07/12/2007 | CA2640798A1 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 |
| 07/11/2007 | EP1805888A2 High phase order ac machine with short pitch winding |
| 07/11/2007 | EP1035645B1 Control device of induction motor |
| 07/11/2007 | CN2922275Y Non-beam long-stroke pumping unit variable frequency control device |
| 07/11/2007 | CN2921380Y External rotor permanent magnetic brushless DC electric machine speed regulating centrifugal ventilator |
| 07/11/2007 | CN1998130A Phase angle control for synchronous machine control |
| 07/11/2007 | CN1996747A 电功率转换设备 Electrical power conversion apparatus |
| 07/11/2007 | CN1995758A Linear temperature speed controller for fan |
| 07/11/2007 | CN1994782A Electric automobile driving apparatus |
| 07/11/2007 | CN1326320C Apparatus for switching windings of AC three-phase motor |
| 07/11/2007 | CN1325742C Opening and closing device for hatch cover |
| 07/10/2007 | US7242857 Motor control circuit |
| 07/10/2007 | US7240761 Electric power steering apparatus |
| 07/05/2007 | DE102006059559A1 Verfahren zum Steuern der Antriebsleistung einer elektromotorischen Reinigungsmaschine und Reinigungsmaschine hierfür A method for controlling the drive power of an electromotive cleaning machine and cleaning machine therefor |
| 07/04/2007 | EP1804371A2 Magnetizing motor and magnetizing method thereof |
| 07/04/2007 | CN2919688Y Economic pulse-width modulating frequency-converting drive system of AC electric motor |
| 07/04/2007 | CN2919687Y Electromagnetic brake device for preventing sucker rod of screw pump well from reversing |
| 07/04/2007 | CN1992507A Electric saver of three-phase ac motor |
| 07/04/2007 | CN1992505A Motor driving apparatus of washing and drying machine |
| 07/04/2007 | CN1992499A Apparatus and method for detecting phase currents of inverter |
| 07/04/2007 | CN1324805C Low voltage, two-level, six-pulse induction motor controller driving a medium-to-high voltage, three-or-more-level AC drive inverter bridge |
| 07/04/2007 | CN1323920C Rareearth permanent-magnet self-synchronous gearless elevator driving control system |
| 06/28/2007 | US20070145941 Motor driving apparatus of washing and drying machine |
| 06/28/2007 | US20070145940 PWM signal generation apparatus and method thereof and motor control apparatus and method thereof |
| 06/28/2007 | US20070145939 Method for controlling AC motor |
| 06/27/2007 | CN2917089Y Timing speed-governing switch for electric fan |
| 06/27/2007 | CN1988370A Synchronous detection circuit for frequency changing air conditioner digital voltage lifting PFC circuit |
| 06/27/2007 | CN1988369A Phase control system and its control method for air conditioner |
| 06/27/2007 | CN1988368A Frequency changing AC speed changing driving washing machine |
| 06/27/2007 | CN1988365A Dead zone compensating method for space vector pulse width modulating output |
| 06/26/2007 | US7236337 Drive power supply and fail determination method |
| 06/26/2007 | US7235948 Forklift and method for controlling induction motor applied to the same |
| 06/26/2007 | CA2304390C Lathe adjusting procedure and feed device |
| 06/21/2007 | WO2007069779A1 Motor driving device and car provided with the same |
| 06/21/2007 | WO2007069580A1 Inverter |
| 06/21/2007 | WO2007069413A1 Control device and corresponding control method for a boost converter in a motor drive system |
| 06/21/2007 | US20070138995 Method for maintaining a direct voltage at the input of a DC/AC voltage converter, recording medium for this method, and electric vehicle |
| 06/21/2007 | US20070138994 AC fan motor driving circuit having detecting current wave capability |
| 06/21/2007 | US20070138983 Method and inverter for controlling a direct current motor |
| 06/21/2007 | US20070137945 Elevator controller |
| 06/21/2007 | DE102005060645A1 Drive device for e.g. high frequency power tool machine, has frequency converter for controlling alternating-current motor speed and/or output, and adapter that is connected to frequency converter |
| 06/20/2007 | CN2914489Y Frequency-changing power-saving control cabinet of oil extractor |
| 06/20/2007 | CN2914488Y Intelligent electricity saving machine of micro-electronic motor |
| 06/20/2007 | CN1983797A Efficient energy-saving controlling cabinet of cooker hood |
| 06/20/2007 | CN1983794A Self tuning method and apparatus for permanent magnet sensorless control |
| 06/20/2007 | CN1982188A Electric-cable reel frequency-variable synchronizer |
| 06/20/2007 | CN1322667C Sensorless controller of AC motor and control method |
| 06/19/2007 | US7233125 System and method for controlling an induction motor |
| 06/19/2007 | US7233124 Motor drive inverter control apparatus |
| 06/19/2007 | US7233123 Electrical machine rotor position identification |
| 06/14/2007 | US20070132423 Position detecting device and synchronous motor driving device using the same |
| 06/13/2007 | CN2912112Y Special conversion speed governer for electrical submersible pump |
| 06/13/2007 | CN1980051A Motor driving device of business air conditioner indoor unit |
| 06/13/2007 | CN1980050A Intelligent efficient fully-automatic tracing electricity economizer |
| 06/13/2007 | CN1980048A Switch magnetic-resistance motor system for driving electric bicycle |
| 06/13/2007 | CN1980047A Control device for driving motor |
| 06/13/2007 | CN1980046A Control device of electric motor |