Title:
LOW-VIBRATION FAULT-TOLERANT CURRENT CALCULATION METHOD FOR OPEN-PHASE FAULT OF SIX-PHASE PERMANENT MAGNET MOTOR
Document Type and Number:
WIPO Patent Application WO/2024/087255
Kind Code:
A1
Abstract:
Disclosed in the present invention is a low-vibration fault-tolerant current calculation method for an open-phase fault of a six-phase permanent magnet motor. When a six-phase permanent magnet motor uses a full-bridge power supply mode, if an open-phase fault occurs, the vibration performance under the open-phase operation of the motor is sharply deteriorated. Open-phase fault types comprise: single-phase open phase, two-adjacent-phase open phase, two-non-adjacent-phase open phase, and at-most-three-phase open phase. In order to suppress the vibration response deterioration of the motor after an open-phase fault occurs in the motor, aiming at a reverse magnetomotive force condition in the residual-phase synthesized magnetomotive force under different open-phase fault types, the residual-phase magnetomotive force is reconstructed, and a residual-phase current is adjusted so as to maintain a normal vibration response. Compared with a conventional fault-tolerant current algorithm for an open-phase fault, the present invention mainly solves the problem of vibration response deterioration present during operation of a six-phase permanent magnet synchronous motor under an open-phase fault. Meanwhile, the torque performance of the motor under the open-phase fault is ensured while the vibration performance of the motor under the open-phase fault is improved.
Inventors:
JI JINGHUA (CN)
ZHOU YUNHAN (CN)
ZHAO WENXIANG (CN)
TAO TAO (CN)
ZHU SHENGDAO (CN)
ZHOU YUNHAN (CN)
ZHAO WENXIANG (CN)
TAO TAO (CN)
ZHU SHENGDAO (CN)
Application Number:
PCT/CN2022/131129
Publication Date:
May 02, 2024
Filing Date:
November 10, 2022
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
H02P21/14; H02P21/05; H02P29/028
Foreign References:
| CN107171601A | 2017-09-15 | |||
| CN110912468A | 2020-03-24 | |||
| CN114026444A | 2022-02-08 | |||
| US20220329188A1 | 2022-10-13 |
Other References:
LIU, JIAN ET AL.: "Research on the Method of Reducing Torque Ripple for Six-phase Permanent Magnet Synchronous Motor (PMSM) Based on Fundamental Current Regulation", MICROMOTORS, vol. 53, no. 07, 28 July 2020 (2020-07-28), pages 49 - 54
CHENGDE TONG: "Simulation of DTP-PMSM Drive and Fault-tolerant Control System Based on Six-phase Eight-leg VSI ", JOURNAL OF POWER SUPPLY, vol. 14, no. 5, 1 January 2016 (2016-01-01), pages 15 - 23, XP093164420, DOI: 10.13234/j.issn.2095-2805.2016.5.15
CHENGDE TONG: "Simulation of DTP-PMSM Drive and Fault-tolerant Control System Based on Six-phase Eight-leg VSI ", JOURNAL OF POWER SUPPLY, vol. 14, no. 5, 1 January 2016 (2016-01-01), pages 15 - 23, XP093164420, DOI: 10.13234/j.issn.2095-2805.2016.5.15
Attorney, Agent or Firm:
NANJING DOYES INTELLECTUAL PROPERTY CO., LTD. (CN)
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