H02P 1/34

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Description

Class  H02P : CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS


Subclass 1/34: Arrangements for starting electric motors or dynamo-electric converters (starting of synchronous motors with electronic commutators H02P 6/2, H02P 6/22; starting dynamo-electric motors rotating step by step H02P 8/04; vector control H02P 21/00) for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by progressive reduction of impedance in secondary circuit

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
11404986 Torque control based on rotor resistance modeling in induction motorsAug 14, 20Aug 02, 22Caterpillar Inc.
11223203 System and method of predicting the presence of an out-of-step condition in a power systemFeb 14, 17Jan 11, 22General Electric Technology GmbH
9522400 Drive system for a ball mill and method for operating a ball millFeb 07, 12Dec 20, 16SIEMENS AKTIENGESELLSCHAFT
7787970 Position-measuring device and method for position measuringJul 11, 05Aug 31, 10DR. JOHANNES HEIDENHAIN GMBH
7504798 Wiper controller and method for controlling wiperMay 16, 06Mar 17, 09KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
7327103 Driver and method for control of voice coil motor in disk driveAug 31, 01Feb 05, 08MAXTOR CORPORATION
7092623 Method and apparatus to achieve accurate fan tachometer with programmable look-up tableSep 22, 03Aug 15, 06MICROCHIP TECHNOLOGY INCORPORATED
6628101 Electronic shorting of wound rotor windingsApr 20, 01Sep 30, 03GENERAL ELECTRIC CANADA INC., GENERAL ELECTRIC COMPANY,
5886498 Sensorless field orientation control method of an induction machine by high frequency signal injectionAug 28, 97Mar 23, 99Not available

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