Interturn Short-Circuit Fault Detection of a Five-Phase Permanent Magnet Synchronous Motor

Zhongyi Yang and Yiguang Chen
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Zhongyi Yang: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
Yiguang Chen: Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China

Energies, 2021, vol. 14, issue 2, 1-17

Abstract: Interturn short circuits are a common fault of permanent magnet synchronous motors (PMSMs). This paper proposes a new method to detect the interturn short-circuit fault (ISCF) of a five-phase PMSM. The method first takes the command voltage and measured current of each phase winding as the original signal and then obtains the delay signal orthogonal to the original signal via Hilbert transform. Then, the generalized instantaneous reactive power of each phase can be calculated from the orthogonal voltage and current signals of each phase. Finally, the influence of the ISCF on the generalized instantaneous reactive power of each phase is analyzed under different working conditions. By comparing the difference in the generalized instantaneous reactive power of each phase, it can be determined which phase winding has the ISCF. The proposed method is verified by simulated and experimental results.

Keywords: fault detection; five-phase PMSM; generalized instantaneous reactive power; Hilbert transform; interturn short-circuit fault (ISCF) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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