- 专利标题: Input vector set for position detection of PM motors
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申请号: US17347753申请日: 2021-06-15
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公开(公告)号: US11527978B2公开(公告)日: 2022-12-13
- 发明人: Eric James Thomas , David Patrick Magee
- 申请人: TEXAS INSTRUMENTS INCORPORATED
- 申请人地址: US TX Dallas
- 专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人: TEXAS INSTRUMENTS INCORPORATED
- 当前专利权人地址: US TX Dallas
- 代理商 Krista Y. Chan; Charles A. Brill; Frank D. Cimino
- 主分类号: H02P21/18
- IPC分类号: H02P21/18 ; H02P21/24 ; H02P25/03 ; H02P27/08
摘要:
A method of determining angular position (θ) 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.
公开/授权文献
- US20210313916A1 INPUT VECTOR SET FOR POSITION DETECTION OF PM MOTORS 公开/授权日:2021-10-07
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