Invention Application
- Patent Title: INPUT VECTOR SET FOR POSITION DETECTION OF PM MOTORS
- Patent Title (中): 输入矢量设置用于PM电机的位置检测
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Application No.: US14721786Application Date: 2015-05-26
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Publication No.: US20160087568A1Publication Date: 2016-03-24
- Inventor: ERIC JAMES THOMAS , DAVID PATRICK MAGEE
- Applicant: Texas Instruments Incorporated
- Main IPC: H02P21/14
- IPC: H02P21/14 ; H02P21/00

Abstract:
A method of determining angular position (A) of a rotor of an N-phase permanent magnet motor (PMM). A processor having an associated stored angular position determination (APD) algorithm is programmed to implement the algorithm to cause an associated motor controller to execute steps including forcing one vector at a time a phase vector set of current or voltage vectors to stator terminals of windings for the N-phases a positive and negative magnitude vector, wherein the vector magnitude is sufficiently small to not move the rotor, and a time duration for the forcing current or voltage vectors is essentially constant. The resulting stator current or voltage levels are measured for each current or voltage vector. An N-dimension current vector or voltage vector is generated from superposition of the resulting stator current levels or resulting stator voltage levels. The N-dimension current vector or voltage vector is used to determine angular position.
Public/Granted literature
- US09431947B2 Input vector set for position detection of PM motors Public/Granted day:2016-08-30
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