- 专利标题: DRIVING PERMANENT MAGNET MOTOR BASED ON NEUTRAL POINT VOLTAGE
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申请号: US16259533申请日: 2019-01-28
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公开(公告)号: US20190238078A1公开(公告)日: 2019-08-01
- 发明人: Rendong Wang
- 申请人: STMICROELECTRONICS (BEIJING) R&D CO. LTD
- 主分类号: H02P21/18
- IPC分类号: H02P21/18 ; H02K11/33 ; H02K11/21 ; H02K11/27 ; H02K11/26 ; H02K1/27 ; H02P21/22 ; H02P21/32
摘要:
The present disclosure is directed to a permanent magnet motor control method and system. A new structure configuration of a permanent magnet motor has a rotor with two or more permanent magnets attached thereon, a stator wound in a “Y” topology with three coils (windings) arranged at 120 degree among one another, and a neutral point of the wound stator wired in a manner that the voltage at the neutral point may be detected in substantially real time. The detected neutral point voltages are analyzed together with the associated vectors of the excitation current provided to the windings of the stator to determine a speed of the rotor. The determined speed of the rotor is used for vector control.
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