| Patents for H02P 21 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation (7,114) |
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| 04/07/2005 | US20050075766 Electric drive control apparatus, method and program therefor |
| 04/07/2005 | US20050073280 Magnetic noise reduction method for AC rotary electric machine, and motor control apparatus and AC rotary electric machine apparatus using the same |
| 04/06/2005 | CN1604976A Inverter of washing machine and inverter of washing machine/dryer |
| 04/06/2005 | CN1604457A Control method for implementing magnetic field accurate orientation of asynchronous motor rotor using voltage closed-loop |
| 04/06/2005 | CN1196248C Control device of induction motor |
| 04/05/2005 | US6876944 Motor speed estimation for stabilized motor control |
| 04/05/2005 | US6876169 Method and controller for field weakening operation of AC machines |
| 03/31/2005 | WO2005029692A1 Compressor driving unit and refrigerator using the same |
| 03/31/2005 | US20050067996 Motor control apparatus for controlling operation of mover of motor |
| 03/30/2005 | EP1519046A2 Apparatus for compensating for speed error of motor |
| 03/30/2005 | CN1601890A Auto detection method for increment photoelectric code disk mounting position on permanent magnet synchronous motor |
| 03/24/2005 | WO2005026003A1 Electric power steering system |
| 03/24/2005 | US20050062450 Rotor resistance estimation by calibrated measurement of stator temperature |
| 03/24/2005 | US20050062448 Apparatus for compensating for speed error of motor |
| 03/23/2005 | EP1516425A1 Brushless motor control utilizing independent phase parameters |
| 03/23/2005 | CN1599232A Apparatus for compensating for speed error of motor |
| 03/23/2005 | CN1194464C Method for directly controlling structure torque of inductive motor modulated by space vector |
| 03/17/2005 | WO2005025050A1 Driving method and driving apparatus of permanent magnet synchronous motor for extending flux weakening region |
| 03/17/2005 | WO2005025049A1 Controller of rotating machine |
| 03/17/2005 | WO2005025047A1 Motor drive apparatus capable of accurately estimating demagnetization of permanent magnet motor |
| 03/17/2005 | WO2005025045A1 Motor controller |
| 03/17/2005 | US20050057208 Method and apparatus to regulate loads |
| 03/17/2005 | US20050057202 Controller for controlling an electric machine |
| 03/16/2005 | CN1193497C Non-synchronous motor rotary inertia identification method |
| 03/16/2005 | CN1193493C Apparatus and method for controlling speed for synchronous reluctance motor |
| 03/10/2005 | US20050052177 Method in salient-pole permanent magnet synchronous machine |
| 03/09/2005 | EP1513250A2 Method in salient-pole permanent magnet synchronous machine |
| 03/09/2005 | EP1512217A2 System and method for controlling a rotating electromagnetic machine |
| 03/09/2005 | CN1192477C Variable-speed control device used with induction motor together |
| 03/08/2005 | US6864662 Electric power assist steering system and method of operation |
| 03/03/2005 | US20050046370 System and method for clamp current regulation in field-weakening operation of permanent magnet (PM) machines |
| 03/03/2005 | US20050046369 Electric drive control apparatus, electric drive control method and program thereof |
| 03/03/2005 | US20050045414 Electric power steering apparatus |
| 03/03/2005 | DE10353012A1 Sensor free capture of position method e.g. for angle velocity of machine rotor, involves sensor free seizing of situation and angular speed of rotor of machine with Kalman filters used for modeling electrical machine to be processed |
| 03/02/2005 | CN1588793A Method or controlling permanent magnet synchronous motor-air conditioner compressor system without speed sensor |
| 03/02/2005 | CN1588775A Compensation control method when power grid voltage is abnormal by array converter |
| 03/01/2005 | US6861813 Motor control apparatus and motor control method |
| 02/24/2005 | WO2005018086A1 Method for the controlled application of a stator-current target value and a torque target value for a polyphase machine that is supplied by an electronic power converter |
| 02/24/2005 | US20050043873 Current limit for an electric machine |
| 02/23/2005 | CN1586034A Rotor angle estimation for permanent magnet synchronous motor drive |
| 02/22/2005 | US6859374 Method in connection with converter bridges |
| 02/17/2005 | US20050035678 Axial flux motor mass reduction with improved cooling |
| 02/16/2005 | EP1507331A2 Wind turbine generator system |
| 02/16/2005 | CN1190004C Synchronous motor control device and method |
| 02/16/2005 | CN1189328C Driving method for driven object, and driving device and printer of using same |
| 02/15/2005 | US6856114 System for measuring motor rotor position |
| 02/15/2005 | US6856109 Efficiency optimization control for permanent magnet motor drive |
| 02/10/2005 | WO2003083611A3 Modular functional block for a field oriented control system |
| 02/10/2005 | US20050029972 Control apparatus for brushless DC motor |
| 02/10/2005 | DE10333975A1 Method of determining the angle of a rotor of a multi phase electric machine such as a vehicle starter motor by analyzing an excitation voltage |
| 02/10/2005 | DE10333414A1 Verfahren zum Betrieb einer motorischen Positionierungsvorrichtung sowie zugehörige Positionierungsvorrichtung A method of operating a motorized positioning device and associated positioning device |
| 02/10/2005 | DE10330551A1 Bestimmung der Stratkommutierung in Synchro-Servo-Antrieben Determination of Stratkommutierung in synchro-servo drives |
| 02/09/2005 | EP1504950A1 Controller for driving a permanent magnet type synchronous motor |
| 02/09/2005 | EP1504523A1 Method and device for the sensor reduced regulation of a permanent magnet excited synchronous machine |
| 02/09/2005 | EP1504522A1 Method and device for the regulation of a permanent-magnet excited synchronous machine having reduced power oscillations in the higher rotational speed range |
| 02/09/2005 | CN1578111A Controller for AC motor and ac motor system |
| 02/09/2005 | CN1578099A Electric power changing device |
| 02/09/2005 | CN1577500A Method and apparatus for head positioning control in a disk drive |
| 02/09/2005 | CN1188301C controller for electric stock |
| 02/03/2005 | US20050024009 Control apparatus for synchronous motor |
| 02/03/2005 | DE10358598A1 Vektorgesteuertes Dualumrichtersystem für einen Induktionsmotor Vector Controlled Dualumrichtersystem for an induction motor |
| 02/03/2005 | DE10327615A1 Asynchronous machine stray inductance saturation characteristic measurement procedure applies slip frequency stator current and calculates saturation characteristic |
| 02/02/2005 | EP1110301B1 Method for controlling a current-regulated motor |
| 02/02/2005 | CN1574605A Apparatus and method for controlling inverter for driving a three-phase motor |
| 02/01/2005 | US6850030 Method and device for controlling currents of synchronous motor |
| 02/01/2005 | US6850027 Stepping motor driver |
| 02/01/2005 | US6850026 Stepping motor driver |
| 01/27/2005 | WO2005008890A1 Sensorless control method and apparatus for a motor drive system |
| 01/27/2005 | WO2005008879A1 Device for estimating pole position of synchronous motor |
| 01/27/2005 | WO2005008878A1 System for operating dc motors and power converters |
| 01/27/2005 | US20050017669 Method for defining quadrature-axis magnetizing inductance of synchronous machine |
| 01/27/2005 | US20050017512 Wind turbine generator system |
| 01/26/2005 | EP1501185A2 Method and arrangement for positionning a rotating device |
| 01/26/2005 | EP1500549A2 Controller for driving a permanent magnet type synchronous motor |
| 01/26/2005 | CN1571265A Motor driving apparatus |
| 01/20/2005 | WO2005006535A1 Determination of start commutation in synchronous servo drives |
| 01/20/2005 | WO2004093302A3 Ac servo driver motor power line disconnection detection method |
| 01/20/2005 | DE10327599A1 Determining phase position of flux maximum in synchronous motor, by digitally filtering change in current and determining first harmonic from Fourier coefficients |
| 01/20/2005 | DE10326328A1 Verfahren und Vorrichtung zum Bremsen einer drehzahlveränderbaren Asynchronmaschine Method and device for braking a variable speed asynchronous machine |
| 01/18/2005 | US6844700 Inverter apparatus |
| 01/18/2005 | US6844697 Motor controller |
| 01/13/2005 | US20050007061 Feedforward controller for synchronous reluctance machines |
| 01/13/2005 | US20050007044 Sensorless control method and apparatus for a motor drive system |
| 01/11/2005 | US6841969 Flux observer in a sensorless controller for permanent magnet motors |
| 01/11/2005 | US6841968 Motor driver circuit and method of controlling the motor driver circuit |
| 01/06/2005 | WO2005002036A2 Position sensorless control algorithm for ac machine |
| 01/06/2005 | US20050002291 Method and apparatus for head positioning control in a disk drive |
| 01/06/2005 | US20050002210 Vector-controlled dual inverter system and method for induction motor |
| 01/06/2005 | US20050001583 Method in connection with sensorless induction motors |
| 01/06/2005 | US20050001572 Method and system for regulating the average electromagnetic torque of a rotating electrical machine, storage medium and data structure for carrying out the method |
| 01/06/2005 | US20050001571 Method and system for regulating instantaneous electromagnetic torque and storage medium for implementing the method |
| 01/05/2005 | EP1493225A1 System and method for controlling a permanent magnet electric motor |
| 01/05/2005 | DE10327690A1 Actual current detection device for electrical drive supplied via current regulator, used with automobile onboard electrical network, uses partial current regulator low-side-shunts |
| 01/04/2005 | US6838844 Electric power steering apparatus |
| 01/04/2005 | US6838843 Controller for DC brushless motor |
| 01/04/2005 | CA2380340C Control apparatus for electric motor and control apparatus for hybrid vehicle |
| 01/02/2005 | WO2005049408A1 Controller for electric power steering device |
| 12/30/2004 | US20040263114 Driving systems of AC motor |
| 12/30/2004 | US20040263111 Flux position identifier using high frequency injection |
| 12/30/2004 | US20040262074 Electric power steering apparatus |