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Open-Circuit Fault Diagnosis for Permanent Magnet Synchronous Motor Drives Based on Voltage Residual Analysis

Author

Listed:
  • Bo Wang

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Xiaobao Feng

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

  • Rongxin Wang

    (School of Electrical Engineering, Southeast University, Nanjing 210096, China)

Abstract

With the widespread application of permanent magnet synchronous motor (PMSM) drives, the demand for safety and reliability has increased. Inverter open-circuit fault is a frequent and severe failure that requires reliable detection and remedial measures. This paper proposes an open-circuit fault diagnosis technique based on voltage residual analysis that does not require additional voltage sensors. The proposed technique analyzes the characteristics of the reference voltage and the actual output voltage under both healthy and fault conditions. To achieve fast and reliable fault detection, it uses the DC component and second harmonic component in the residual voltage between estimated voltage and controller reference voltage. Once an open-circuit fault is detected, the polarity of the DC component is capable of identifying the fault location. The effectiveness and robustness of the proposed technique are verified through simulations and testing on a triple redundant PMSM under various load and speed conditions.

Suggested Citation

  • Bo Wang & Xiaobao Feng & Rongxin Wang, 2023. "Open-Circuit Fault Diagnosis for Permanent Magnet Synchronous Motor Drives Based on Voltage Residual Analysis," Energies, MDPI, vol. 16(15), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:15:p:5722-:d:1207516
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