Invention Grant
- Patent Title: Input vector set for position detection of PM motors
- Patent Title (中): PM电机位置检测输入矢量集
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Application No.: US14721786Application Date: 2015-05-26
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Publication No.: US09431947B2Publication Date: 2016-08-30
- Inventor: Eric James Thomas , David Patrick Magee
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent John R. Pessetto; Charles A. Brill; Frank D. Cimino
- Main IPC: H02P21/00
- IPC: H02P21/00 ; H02P21/14

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
- US20160087568A1 INPUT VECTOR SET FOR POSITION DETECTION OF PM MOTORS Public/Granted day:2016-03-24
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