| 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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| 10/22/2002 | US6469469 Variable output induction motor drive system |
| 10/17/2002 | US20020151993 Method and system for programming a motor controller |
| 10/10/2002 | US20020145400 Motor load controller for AC induction motors |
| 10/03/2002 | US20020140394 Phase-saving lowpass filters for drive control in conjunction with a high level of control dynamics |
| 10/02/2002 | CN1091970C Method and device for controlling the magnetic flux in a rotating high voltage electric alternating current machine with permanent magnet rotor |
| 10/01/2002 | US6459220 Spindle-motor control method, spindle-motor control device, spindle-motor drive circuit and disk device |
| 10/01/2002 | US6457565 Elevator apparatus with rechargeable power supply and discharge control |
| 09/26/2002 | DE10208771A1 Anpassungsfähige synchrone Gleichstromlüftergeschwindigkeitssteuerung Adaptive synchronous DC fan speed control |
| 09/18/2002 | EP1240711A1 Method and system for programming a motor controller |
| 09/10/2002 | US6448735 Controller for a wound rotor slip ring induction machine |
| 09/06/2002 | WO2002069484A1 Acceleration and deceleration control method |
| 09/05/2002 | US20020121871 Disk drive apparatus and motor |
| 09/03/2002 | US6445966 Data interface module for motor control system |
| 09/03/2002 | US6445332 Command module for a motor control system |
| 09/03/2002 | US6445156 Speed control |
| 08/29/2002 | WO2001035520A8 Device and method for controlling supply of current and static capacitance to compressor |
| 08/29/2002 | US20020117992 Control method of compressor motor and inverter equipped with the same method |
| 08/28/2002 | EP1234372A1 Device and method for controlling supply of current and static capacitance to compressor |
| 08/28/2002 | CN1366188A Induction motor overload detector and overload detecting method |
| 08/22/2002 | WO2002065608A1 Overload current protection device using magnetic impedance element |
| 08/22/2002 | US20020113570 Method for frequency converter |
| 08/22/2002 | US20020113565 Coil winding number variable type motor and coil winding number varying method for varying cooling and heating capacity of reciprocating compressor |
| 08/21/2002 | EP1232559A1 Energy conserving motor controller |
| 08/21/2002 | EP1232558A1 Device and method for controlling supply of current and static capacitance to compressor |
| 08/14/2002 | DE10156746A1 Steuerungsverfahren eines Kompressors und eines Wechselrichters Control method of a compressor and an inverter |
| 08/13/2002 | US6433505 Phase shifting network |
| 08/13/2002 | US6433504 Method and apparatus of improving the efficiency of an induction motor |
| 08/01/2002 | WO2002060048A1 A method and a device for controlling the operation of a motor |
| 08/01/2002 | WO2002047236A3 Constructive arrangement for the starting system of an electric motor |
| 08/01/2002 | US20020101221 Induction generator control with minimal sensor requirements |
| 07/31/2002 | CN1361574A Coil windings number-variable type motor and changing method for number of coil windings |
| 07/25/2002 | US20020097018 Method for calculating inertia moment and driver for electric motor |
| 07/25/2002 | DE10158994A1 Motor for altering heating and cooling capacity of piston compressor e.g. for refrigeration unit, has variable number of coil windings |
| 07/24/2002 | CN1088285C Method and circuit arrangement for commutation of multiple winding electric motor |
| 07/23/2002 | US6424871 Rotating machine integrated with controller, and inverter |
| 07/18/2002 | US20020093302 Method and apparatus for the improved control of motors and of motor-actuated work apparatus |
| 07/17/2002 | EP1223666A2 Method for frequency convertor |
| 07/17/2002 | EP1222470A1 A device and a method for estimating the speed of a slip ring asynchronous machine |
| 07/10/2002 | EP0847547B1 A control unit having a disturbance predictor, a system controlled by such a control unit, an electrical actuator controlled by such a control unit, and a throttle device provided with such an actuator |
| 07/10/2002 | CN1087481C Apparatus and method for controlling electric motor |
| 07/09/2002 | US6418274 Motor control apparatus and motor control method |
| 07/04/2002 | US20020085398 System and method for regenerative PWM AC power conversion |
| 06/26/2002 | CN1355453A Circuit for driving linear compressor |
| 06/20/2002 | WO2002049201A1 Machine constant estimation device |
| 06/18/2002 | US6407530 Device and method for controlling supply of current and static capacitance to compressor |
| 06/13/2002 | WO2002047236A2 Constructive arrangement for the starting system of an electric motor |
| 06/13/2002 | US20020070694 Dynamo-electric machines and control and operating system for the same |
| 06/12/2002 | CN1353499A Inertial torque operation method of electric motor and its driving device |
| 06/06/2002 | DE10157700A1 Schaltung zur Ansteuerung eines linearen Kompressors Circuit for driving a linear compressor |
| 06/06/2002 | DE10147610A1 Reciprocating compressor controller for refrigerator, controls voltage supply to drive circuit to make stroke corresponding to detected phase difference inflection point |
| 06/04/2002 | US6400119 Energy conserving motor controller |
| 05/30/2002 | US20020064461 Circuit for driving linear compressor |
| 05/29/2002 | EP1023649B1 Method and circuit for monitoring the operating condition of electric motors |
| 05/29/2002 | DE10120721A1 Computing inertia for control with converter of non-generating type for electric motor speed control, using mechanical inertia constants and computing is only performed during period when motor is accelerating |
| 05/29/2002 | DE10057025A1 Filter for use in control devices e.g. for machine-tools, has resonance frequencies in the control path which cause interference that is suppressed using a low pass filter |
| 05/23/2002 | WO2002041485A1 Rotary machine control |
| 05/23/2002 | US20020060548 Driving system of AC motor |
| 05/16/2002 | WO2002038332A1 Servocontrol device |
| 05/07/2002 | US6384549 Rotating electric motor system capable of vibrating and method for operating a rotating electric motor capable of vibrating |
| 05/02/2002 | US20020051710 Apparatus and method for controlling operation of reciprocating compressor |
| 05/01/2002 | CN1346937A Device and method for controlling reciprocating compressor operation |
| 04/30/2002 | US6381406 Adaptive synchronous DC fan speed controller |
| 04/30/2002 | US6380703 Digital PLL filter and VCO for use in controlling a spindle motor of a mass data storage device |
| 04/23/2002 | US6377478 Inverter device |
| 04/23/2002 | US6377109 Load driver circuit |
| 04/11/2002 | WO2002029967A1 Device for controlling an induction electrical motor power supply |
| 04/11/2002 | US20020041168 Apparatus and method for controlling an electric machine |
| 04/10/2002 | EP0827265B1 Apparatus for determination of control constant |
| 04/10/2002 | CN1082743C Motor controller |
| 04/04/2002 | WO2002027911A1 Motor controller |
| 04/04/2002 | US20020039009 Spindle-motor control method, spindle-motor control device, spindle-motor drive circuit and disk device |
| 04/04/2002 | DE10044029A1 Steueranordnung eines AC-Jalousienmotors oder eines AC-Rohrmotors Control system of an AC motor blinds or an AC tubular motor |
| 03/26/2002 | US6362582 Electronically commutated motor |
| 03/13/2002 | EP1187289A1 Control device for an electric motor powered by ac |
| 03/13/2002 | EP1186741A2 Control device of an AC motor for a blind or for a tubular AC motor |
| 03/13/2002 | EP0688094B1 Device and method for controlling motor |
| 03/13/2002 | CN1339869A Device and method for controlling motor |
| 03/06/2002 | EP1184753A1 Circuit controlling a motor |
| 02/27/2002 | EP1182771A2 Apparatus and method for controlling an electric machine |
| 02/14/2002 | WO2002013368A1 Electric motor control device |
| 01/31/2002 | DE10031637C1 Device for determining revolution rate of induction motor uses saliency tracking method with sensor for measuring electric current, signal processing arrangement integrated into sensor |
| 01/22/2002 | CA2130668C Method and apparatus for correcting hysteresis synchronous motor hunting |
| 01/17/2002 | US20020005705 Phase shifting network |
| 01/16/2002 | EP1172926A2 Power output device |
| 01/09/2002 | CN1077740C Rotating machine integrated with controller and inverter |
| 01/03/2002 | US20020000784 Power output device |
| 01/02/2002 | EP1166431A1 Speed control for induction motor with variable voltage-frequency ratio |
| 12/25/2001 | US6333614 Method and circuit for monitoring the operating condition of electric motors |
| 12/25/2001 | US6333611 Motor drive apparatus for an injection molding machine |
| 12/25/2001 | US6333578 Induction motor |
| 12/18/2001 | CA2079681C Method of suppressing torsional vibration in a motor speed control system and apparatus therefor |
| 12/12/2001 | EP1161790A1 Method for controlling an electrical machine and an inverter |
| 12/11/2001 | US6329784 Starter circuit for motors, particularly for refrigerator compressors |
| 11/14/2001 | EP1154121A1 Perfectioned control for motor driven shading devices |
| 11/14/2001 | EP1154120A1 Control for motor driven shading devices with perfected end of course memory |
| 11/07/2001 | CN1074386C Speed control apparatus for compensating vibration of elevator |
| 11/06/2001 | US6311532 Method and device for reducing or compensating rotational speed losses during insertion or rolling stock in a roll stand |
| 11/01/2001 | WO2001082462A1 Motor controller |
| 10/31/2001 | CN1074203C Freguency converter for electromotor |
| 10/24/2001 | CN1319275A Motor controller |