| Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487) |
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| 02/05/2008 | US7327118 Electric machine and method of operating the electric machine |
| 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 | CA2813526A1 Variable-flux motor drive system |
| 01/24/2008 | US20080018295 Motor Drive Control Circuit and Motor Apparatus Using The Same |
| 01/24/2008 | US20080018288 Method of adjusting parameters of a synchronous motor and variable speed drive using such a method |
| 01/24/2008 | DE102007026012A1 Electric drive controlling device for printing material processing machine, has electronic control unit calculating electric energy required by electric drive as function of motion profiles of electric drive |
| 01/23/2008 | CN101110561A Electrical servo power-assisted steering controller |
| 01/22/2008 | US7321211 Power variation control system for cyclic loads |
| 01/16/2008 | EP1879289A1 Determination of the angle of rotation of an electric motor |
| 01/16/2008 | CN101106352A Cold rattle reduction control system |
| 01/16/2008 | CN100362739C Method and device for producing electric motor arbitrary mechanical characteristic based on PWM technique |
| 01/10/2008 | US20080010036 Electric machine |
| 01/09/2008 | CN101101039A Resistive torsional mode damping system and method |
| 01/08/2008 | US7317292 AC motor control method and control device |
| 01/02/2008 | CN100359798C Method for controlling doubly-fed machine |
| 12/27/2007 | DE102007028914A1 Electric motor speed controlling and/or regulating unit, has parameter adjusting unit adjusting parameter of unit for controlling and/or regulating speed on basis of output value of switch gear unit |
| 12/26/2007 | CN101093974A Energy saving control box for pumping unit in oil field, and energy saving control method |
| 12/26/2007 | CN100358235C Motor controller |
| 12/26/2007 | CN100358234C Electric machine |
| 12/19/2007 | EP1868289A1 Motor control device |
| 12/19/2007 | CN200994114Y Variable frequency rolling way motor with accurate positioning function |
| 12/19/2007 | CN101090252A Electric saving method for AC motor and corresponding AC motor electric saver |
| 12/19/2007 | CN101090251A On-line minimaum copper consumption control for inner permanent magnetic synthronous electric machine for vehicle |
| 12/18/2007 | US7310001 Current sensing method and current sensing device, power conversion device using this current sensing device, and vehicle using this power conversion device |
| 12/13/2007 | WO2007141084A1 Starting procedure for a dc motor without sensors and brushes |
| 12/13/2007 | CA2632108A1 Ride-through method and system for hvac&r chillers |
| 12/12/2007 | CN101087124A A frequency converter control method and device for principal axis of machine tool |
| 12/12/2007 | CN101087123A Electromotive tool |
| 12/11/2007 | US7307401 Method and apparatus for PWM control of voltage source inverter |
| 12/06/2007 | WO2007115907A3 Drive and evaluation unit |
| 12/06/2007 | US20070278986 Electric motor drive control system and control method thereof |
| 12/06/2007 | DE102006025366A1 Electrical drive actuating method for vehicle, involves emitting appropriate signal to converter, controller and sensor device to change control parameter and/or filter such that load is brought into rotational vibration-load condition |
| 12/05/2007 | EP1863168A2 Electrical multi-phase machine and method for operating such |
| 12/05/2007 | CN200987129Y High-reliability multi-power energy-saving electric machine for oilfield |
| 12/04/2007 | US7304452 Motor control device |
| 11/29/2007 | WO2006097789A3 Apparatus and method for controlling a motor |
| 11/29/2007 | WO2006022725A3 Operating a three phase device using single phase power |
| 11/28/2007 | CN101079589A Electric motor drive device and electric motor drive method |
| 11/27/2007 | US7301737 Motor power line break detection method in AC servo driver |
| 11/22/2007 | WO2007131667A1 Drive system for an electronic domestic appliance |
| 11/22/2007 | DE102006023442A1 Electrical drive actuating method for vehicle, involves emitting appropriate signal to converter, controller and sensor device to change control parameter and/or filter such that load is brought into rotational vibration-load condition |
| 11/22/2007 | DE102006021498A1 Electrical alternating current machine e.g. induction machine, for use in e.g. collector design, has winding arrangement with winding segments that are switched such that some windings are supplied with current of different amperages |
| 11/21/2007 | EP1858153A2 Electric motor and method for actuating such a motor |
| 11/21/2007 | EP1417747B1 Method and apparatus for high performance permanent magnet motor speed control with limited position information |
| 11/21/2007 | CN200980061Y A torque generator with a high power factor and a low pulsation |
| 11/21/2007 | CN100350735C Torque ripple reduction for a voltage mode motor controller |
| 11/15/2007 | US20070262744 Method and apparatus for controlling an electric motor using star voltage modulation |
| 11/07/2007 | CN200973067Y Single-phase electric saving for sewing machine |
| 11/06/2007 | US7292001 Gain adjusting method for servo control device |
| 11/01/2007 | US20070251236 Motor Control and Driver for Electric Boosting Application |
| 10/31/2007 | EP1850471A2 System and method for transient-based motor speed estimation with transient excitation |
| 10/31/2007 | CN101064493A System and method for transient-based motor speed estimation with transient excitation |
| 10/31/2007 | CN101064490A Method and arrangement in connection with slip-ring motor |
| 10/25/2007 | US20070247878 "Low Loss Propulsion System" |
| 10/25/2007 | DE102007013952A1 Servomotor control method for driving machine tool, involves correcting torque according to distance from position where moving direction of machine is changed with respect to torque command value at time of quadrant switching |
| 10/24/2007 | EP1846645A2 Apparatus and method for controlling a motor |
| 10/24/2007 | CN101060305A Automatic voltage regulating system for electric drive motor |
| 10/24/2007 | CN101060304A Motor intelligent power-saving protector |
| 10/24/2007 | CN101060251A Energy-saving control device for beam pumping unit |
| 10/18/2007 | WO2007115907A2 Drive and evaluation unit |
| 10/18/2007 | US20070241718 Control device for an electric motor and related method |
| 10/18/2007 | DE102006035858A1 Engine e.g. conveying device, and electrical drive machine arrangement, has engine and drive machine with memory unit for storing data, where converter and starter have reading unit that is provided for selecting data stored in memory unit |
| 10/18/2007 | DE102006015597A1 Rotary part`s e.g. cylinder, critical rotational speed recognizing method for rotary printing machine, involves evaluating sequence of variation of parameter representing actual performance data within quasi-stable operating situation |
| 10/17/2007 | CN101056087A Drive control device for AC motor |
| 10/11/2007 | WO2007113859A1 Control device for an asynchronous electric motor |
| 10/11/2007 | US20070236168 Motor Drive Circuit, Motor System, and Motor Drive Method |
| 10/10/2007 | CN200959586Y Electricity economizer of automatic three-phase motor |
| 10/10/2007 | CN200959585Y Intelligent electricity economizer of motor |
| 10/09/2007 | US7279864 Control unit for driving a regulating transistor of a fan arrangement |
| 10/03/2007 | EP1840382A2 Solar circulation pump and method for regulating, controlling and adjusting the performance of a solar circulation pump |
| 10/03/2007 | CN200954623Y 电动工具 Power Tools |
| 10/02/2007 | US7276878 Amperage control for protection of battery over current in power tools |
| 10/02/2007 | US7276873 Fault-handling system for electric power steering system |
| 09/27/2007 | DE202006008364U1 Stromversorgungsgerät für einen Drehstrom-Asynchronmotor eines Antriebs mit quadratischer Drehmomentkurve Power supply for a three-phase asynchronous motor with a drive square torque curve |
| 09/26/2007 | EP1837987A1 Method of identifying the parameters of a motor cable |
| 09/26/2007 | CN200953541Y H bridge control system |
| 09/20/2007 | WO2007104282A1 Device for simulating the symmetrical and asymmetrical impedance of an asynchronous machine |
| 09/19/2007 | EP1835612A1 Driver for induction motor and method of driving the same |
| 09/19/2007 | EP1834403A2 Circuit to improve motor phase current reconstruction via dc link |
| 09/19/2007 | CN101039092A Driver for induction motor and method of driving the same |
| 09/19/2007 | CN101039088A Motor speed estimation system and method using hybrid model reference adaptive system |
| 09/12/2007 | CN101034868A Motor control method and motor control apparatus |
| 09/12/2007 | CN101034867A 风扇控制装置 Fan Control Device |
| 09/12/2007 | CN101034865A Motor controller and motor control method |
| 09/12/2007 | CN100337396C Ac motor control method and control device |
| 09/12/2007 | CN100337395C Motor temperature estimator and motor controller |
| 09/11/2007 | US7268516 Circuit for use with switched reluctance machines |
| 09/06/2007 | US20070205740 Method of automatically setting vibration suppression filter and automatic setting apparatus for vibration suppression filter |
| 09/05/2007 | CN200944575Y DC busbar supplying crane power system |
| 09/04/2007 | US7265954 Method for estimating DC motor coil temperature, DC motor control method and their devices |
| 09/04/2007 | US7265516 Linear electric motor controller and system for providing linear control |
| 08/30/2007 | WO2007063366A3 Processing unit |
| 08/29/2007 | EP1711998B1 Motor control and driver for electric boosting application |
| 08/28/2007 | US7262978 Voltage conversion apparatus, voltage conversion method, and computer-readable recording medium with program recorded thereon to allow computer to execute voltage conversion control |
| 08/28/2007 | US7262579 Inverted electric motor and method for using such to propel a vehicle |
| 08/23/2007 | DE102006005854A1 Verfahren und Vorrichtung zum Bestimmen des Drehmoments einer elektrischen Maschine Method and device for determining the torque of an electric machine |
| 08/22/2007 | EP1821391A1 Over-unity energy motor-generator |
| 08/22/2007 | EP1820262A2 Operation control device and method of compressor |
| 08/22/2007 | CN2938567Y Explosive-proof compatible safe four-quadrant frequency converter speed regulation system of digital mine hoist |
| 08/15/2007 | EP1817844A2 Advanced current control method and apparatus for a motor drive system |