| 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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| 11/25/2009 | EP2122822A1 Open-loop method for controlling power |
| 11/24/2009 | US7622887 Power electronics equipments |
| 11/19/2009 | WO2009138285A2 Method for examining the state of an electric motor |
| 11/19/2009 | US20090284212 Methods and apparatuses for estimating transient slip |
| 11/19/2009 | US20090284211 Method and apparatus for estimating induction motor electrical parameters |
| 11/19/2009 | US20090284202 Motor Control Device, Control Method, and Control Program |
| 11/19/2009 | DE102008024438A1 Chirurgische Antriebseinheit, chirurgisches Instrument und chirurgisches Antriebssystem Surgical drive unit, surgical instrument and surgical drive system |
| 11/18/2009 | EP2119587A1 Controller for motor, and vehicle |
| 11/11/2009 | CN201345637Y Power-saving device for AC asynchronous motor |
| 11/11/2009 | CN201345636Y Motor power device electricity-saving controller |
| 11/10/2009 | US7615945 Barrier operator with panic control override mode and related method |
| 11/03/2009 | US7612521 Motor driving apparatus |
| 11/03/2009 | US7612519 Control arrangement for an induction motor compressor having at least three windings, a torque-augmentation circuit, a starting capacitor and a resistive element |
| 10/29/2009 | US20090267549 Brushless motor controller and brushless motor |
| 10/29/2009 | DE102009000928A1 Harmonische Verringerung der Drehmomentwelligkeit bei geringen Motorgeschwindigkeiten Harmonic reduction of torque ripple at low engine speeds |
| 10/29/2009 | DE102008020656A1 Electrical drive machine i.e. three-phase alternating current asynchronous machine for use as e.g. rotary drive in drive system, has controller for determining supply voltage of load from measured parameters and parameters of machine |
| 10/28/2009 | EP2112546A2 Galvano motor and galvano motor system |
| 10/28/2009 | CN101567661A Harmonic torque ripple reduction at low motor speeds |
| 10/22/2009 | WO2009128815A1 Traction control method and apparatus for a vehicle with independent drives |
| 10/22/2009 | US20090261775 Permanent magnet motor start-up |
| 10/22/2009 | CA2720840A1 Traction control method and apparatus for a vehicle with independent drives |
| 10/21/2009 | CN101562422A Automatic setting method for speed ring control parameters of alternating current servo driver |
| 10/20/2009 | US7606624 Self-commissioning electronic motor controller determination |
| 10/15/2009 | WO2009126288A2 Weighted field oriented motor control |
| 10/15/2009 | WO2009053388A3 Stationary rotor position identification method |
| 10/15/2009 | WO2009050664A3 Method for analysing the operation of an electromechanical actuator for the powered manoeuvre of a screen, and actuator for implementing same |
| 10/15/2009 | US20090256519 System, Method and Program Product For Cable Loss Compensation In An Electrical Submersible Pump System |
| 10/15/2009 | US20090256517 Weighted field oriented motor control for a vehicle |
| 10/15/2009 | US20090255740 Voltage estimation feedback of overmodulated signal for an electrical vehicle |
| 10/15/2009 | DE102008018625A1 Electrical three-phase asynchronous motor i.e. three-phase asynchronous motor having squirrel cage, operating device, has switching or program part and control component increases ignition to decrease voltage-time surface of motor voltages |
| 10/14/2009 | CN101557194A Motor driving apparatus |
| 10/14/2009 | CN100550600C Drive control device for AC motor |
| 10/14/2009 | CN100550594C Motor speed estimation system and method using hybrid model reference adaptive system |
| 10/08/2009 | US20090251082 Controller for ac rotary machine |
| 10/08/2009 | DE102007058209B4 Verfahren zum Aufschalten eines Umrichters auf eine geberlos betriebene Asynchronmaschine Method for Intrusion of an inverter to run a sensorless induction machine |
| 10/07/2009 | CN101552591A Method and apparatus for torque ripple reduction |
| 10/07/2009 | CN101552589A Relay feedback based AC servo system automatic setting method |
| 10/07/2009 | CN101552588A An electric motor control device and an electric motor control system |
| 10/06/2009 | CA2499968C System and method for configurable motor controller settings |
| 10/01/2009 | US20090243525 Inverter control method |
| 09/30/2009 | EP2106020A2 Motor controller |
| 09/30/2009 | CN101546983A Motor drive circuit |
| 09/23/2009 | CN101540582A Motor economic operation controller |
| 09/17/2009 | US20090230913 Dc bus discharge in an electric motor system |
| 09/17/2009 | US20090230909 Redundant dc bus discharge for an electric motor system |
| 09/17/2009 | US20090230903 Inverter controller and method for operating the same |
| 09/17/2009 | DE102008000675A1 Verfahren zur Ermittlung und Korrektur des von einem Elektromotor abgegebenen Drehmomentes Procedures for identifying and correcting the output from an electric motor torque |
| 09/15/2009 | US7589490 Motor control system for the PWM control of an electric motor |
| 09/15/2009 | US7589489 Method and arrangement for controlling the electricity supply of an electronically commutated motor |
| 09/10/2009 | US20090224721 Varying flux versus torque for maximum efficiency |
| 09/10/2009 | DE102008000501A1 Motorsystem mit Sensor und Auswerteeinheit Motor system with sensor and evaluation |
| 09/09/2009 | EP2099126A2 Motor with electronic end-of-travel management |
| 09/09/2009 | CN201307844Y Electric saver of industrial sewing machine |
| 09/09/2009 | CN101527538A Water pump motor control device |
| 09/09/2009 | CN101527537A Method for adjusting pulse width by capturing three-phase current information and system for modulating pulse width |
| 09/03/2009 | WO2009107233A1 Driving controller of ac motor |
| 09/03/2009 | US20090218981 Controlling switching of thyristors to reduce power loss in variable speed motor |
| 09/03/2009 | CA2714709A1 Driving controller for ac motor |
| 09/02/2009 | EP2096751A1 Electric motor car control apparatus |
| 09/02/2009 | EP2005561B1 Drive and evaluation unit |
| 09/01/2009 | US7583049 Sensorless control systems and methods for permanent magnet rotating machines |
| 09/01/2009 | US7583046 Rotor position detection at standstill and low speeds using a low power permanent magnet machine |
| 08/27/2009 | US20090212732 Universal adaptive torque control for pm motors for field-weakening region operation |
| 08/26/2009 | CN201298821Y Slippage controller with an over-speed protection function |
| 08/25/2009 | US7579804 Method to measure the angular speed of an induction motor |
| 08/25/2009 | US7579800 Motor control method and device thereof |
| 08/20/2009 | WO2008046885A3 Control method and motorstarter device |
| 08/20/2009 | US20090206785 Waveform current monitor using rdson of low-side bridge fet |
| 08/19/2009 | CN201294483Y Motor driver and control circuit board |
| 08/19/2009 | CN201294470Y Phase control intelligent electricity-saving controller for three-phase asynchronous motor |
| 08/19/2009 | CN201294430Y Rainfall induction water-shaving motor |
| 08/19/2009 | CN101510750A Device and method for detecting initial position angle of double fed electric machine rotor |
| 08/13/2009 | US20090200981 System and method for providing constant loading in ac power applications |
| 08/12/2009 | EP2088488A1 Actuation device and method for its operation |
| 08/12/2009 | CN201290092Y Pressure-regulating and energy-saving controller for asynchronous motor |
| 08/12/2009 | CN201290089Y Control device for series machine of electric vehicle |
| 08/12/2009 | CN101505132A Winch motor control system and control method |
| 08/11/2009 | US7574294 Controller for electric power steering device |
| 08/06/2009 | US20090193923 Motor control apparatus |
| 08/05/2009 | EP1283593B1 Motor controller |
| 08/05/2009 | CN201286081Y Energy saving control circuit for solar travelling hat |
| 08/05/2009 | CN201286080Y Energy saving control circuit for solar travelling hat |
| 08/05/2009 | CN201286009Y Vacuum electromagnetic starter for speed governing flame proof dual speed motor for mining |
| 08/05/2009 | CN101499769A Three phase rat cage asynchronous motor having self interference resisting speed regulating circuit |
| 08/05/2009 | CN101499768A Electronic power-saving device for three phase sewing machine |
| 08/05/2009 | CN101499767A Electronic power-saving device for single phase sewing machine |
| 08/05/2009 | CN101499758A Controller for multi-phase electric motor |
| 08/05/2009 | CN100525067C Motor speed control circuit |
| 07/30/2009 | WO2009009232A3 System and method for determining stator winding resistance in an ac motor |
| 07/30/2009 | US20090189561 Electric motor stator winding temperature estimation |
| 07/30/2009 | DE102008005637A1 Electric machine torque controlling method for e.g. hybrid vehicle, involves limiting torque to torque threshold value after voltage value or current value of machine exceeds preset voltage threshold value or preset current threshold value |
| 07/29/2009 | CN101496276A Circuit to improve motor phase current reconstruction via DC link |
| 07/23/2009 | WO2009091319A1 Electric motor |
| 07/23/2009 | US20090184678 Permanent magnet ac motor systems and control algorithm restart methods |
| 07/23/2009 | DE102008004013A1 Drive system controlling method for asynchronous drive motor of dump truck, involves driving electric motor with rotary field frequency in warming phase after stopping of motor with specific percentage slippage |
| 07/22/2009 | CN201278504Y Electricity saving device for three phase asynchronous motor |
| 07/21/2009 | US7564205 Electronic device and image forming apparatus |
| 07/16/2009 | WO2009088908A1 Methods and systems involving determining shaft velocity |
| 07/16/2009 | US20090179606 Circuit Arrangement and Method for Controlling an Electrical Consumer |
| 07/16/2009 | DE102008004039A1 Drive system controlling method for adjusting swiveling joint in rail-mounted vehicle e.g. underground rail car, involves operating pulse power converter and operating drive system with slip exceeding transition slip of asynchronous motor |