- Patent Title: Short-circuit fault-tolerant control method based on deadbeat current tracking for five-phase permanent magnet motor with sinusoidal back-electromotive force or trapezoidal back-electromotive force
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Application No.: US17621256Application Date: 2020-12-07
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Publication No.: US11611307B2Publication Date: 2023-03-21
- Inventor: Qian Chen , Yuhang Xia , Licheng Gu , Wenxiang Zhao , Guohai Liu
- Applicant: JIANGSU UNIVERSITY
- Applicant Address: CN Zhenjiang
- Assignee: JIANGSU UNIVERSITY
- Current Assignee: JIANGSU UNIVERSITY
- Current Assignee Address: CN Zhenjiang
- Agency: Bayramoglu Law Offices LLC
- Priority: CN202011166421.3 20201027
- International Application: PCT/CN2020/134230 WO 20201207
- International Announcement: WO2022/088391 WO 20220505
- Main IPC: H02H7/08
- IPC: H02H7/08 ; H02P29/028 ; H02P29/60 ; H02P25/22

Abstract:
A short-circuit fault-tolerant control method based on deadbeat current tracking for a five-phase permanent magnet motor with a sinusoidal back-electromotive force or a trapezoidal back-electromotive force (EMF) is provided. By fully utilizing a third harmonic space of a five-phase permanent magnet motor in a fault state, the method proposes a fault-tolerant control strategy for a five-phase permanent magnet motor with a sinusoidal back-EMF or a trapezoidal back-EMF in case of a single-phase short-circuit fault. The method enables the five-phase permanent magnet motor to make full use of the third harmonic space during fault-tolerant operation, thereby improving the torque output of the motor in a fault state and improving the fault-tolerant operation efficiency of the motor. The method achieves desirable fault-tolerant performance and dynamic response of the motor, and expands the speed range of the motor during fault-tolerant operation.
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