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Novel Flying-start Strategy for Sensorless Permanent Magnet Synchronous Motor
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Guofeng YUAN  Member, CPSS1, Tingyu LIU1, Cong HU2, Chunyu LI2, Chunyu ZHENG1, 3
Journal of Power Supply | 2026, 24(2) : 283 - 290
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Journal of Power Supply | 2026, 24(2): 283-290
• Motor Drives and Control •
Novel Flying-start Strategy for Sensorless Permanent Magnet Synchronous Motor
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Guofeng YUAN  Member, CPSS1, Tingyu LIU1, Cong HU2, Chunyu LI2, Chunyu ZHENG1, 3
Affiliations
  • 1.Inverier Technology Engineering Research Center of Beijing, North China University of Technology, Beijing 100144, China
  • 2.Laboratory of Aerospace Servo Actuation and Transmission, Beijing Institute of Precision Electromechanical Control Equipment, Beijing 100076, China
  • 3.School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China
Published: 2026-02-28 doi: 10.13234/j.issn.2095-2805.2026.2.283
Outline
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Flying-start is one of the key technologies used in the traction electric-drive system of a sensorless permanent magnet synchronous motor, and one of the common methods is to short-circuit the motor through triggering zero-voltage vector pulse to realize the flying-start below the rated speed. To accurately select the short-circuit pulse time and the parameters of short-circuit pulse time interval, a flying-start method with adaptive adjustment of parameters at different rotation speeds is proposed, which estimates the motor’s approximate rotation speed by injecting a test zero-voltage vector pulse under various free rotation conditions. According to the obtained approximate rotation speed, the short-circuit pulse time and the parameters of short-circuit pulse time interval are adjusted adaptively. As a result, the contradiction that the traditional fixed parameter method is unable to strike a balance between the inverter overcurrent and the estimation accuracy of rotor position is solved, and the estimation accuracy of rotor position during restarting is significantly improved. Finally, the correctness and effectiveness of the proposed method was verified by simulation and experimental results.

Permanent magnet synchronous motor  /  sensorless control  /  flying-start  /  short-circuit current method
苑国锋中国电源学会会员, 刘汀宇, 胡骢, 李春宇, 郑春雨. 新型永磁同步电机无位置传感器带速重投策略. 电源学报, 2026 , 24 (2) : 283 -290 . DOI: 10.13234/j.issn.2095-2805.2026.2.283
Guofeng YUAN, Tingyu LIU, Cong HU, Chunyu LI, Chunyu ZHENG. Novel Flying-start Strategy for Sensorless Permanent Magnet Synchronous Motor[J]. Journal of Power Supply, 2026 , 24 (2) : 283 -290 . DOI: 10.13234/j.issn.2095-2805.2026.2.283
Funding
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  • National Natural Science Foundation of China-China Railway Group Corporation Railway Basic Research Joint Fund Project(U2368205)
Appendix
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Year 2026 volume 24 Issue 2
23
3
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.2.283
  • Receive Date：2023-03-21
  • Online Date：2026-10-29
  • Published：2026-02-28
Article Data
Affiliations
History
  • Received：2023-03-21
  • Revised：2023-07-20
  • Accepted：2023-10-11
Funding
National Natural Science Foundation of China-China Railway Group Corporation Railway Basic Research Joint Fund Project(U2368205)
Affiliations
    1.Inverier Technology Engineering Research Center of Beijing, North China University of Technology, Beijing 100144, China
    2.Laboratory of Aerospace Servo Actuation and Transmission, Beijing Institute of Precision Electromechanical Control Equipment, Beijing 100076, China
    3.School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China
References
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https://castjournals.cast.org.cn/joweb/dyxb/EN/10.13234/j.issn.2095-2805.2026.2.283
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