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

Bo Wang (), Xiaobao Feng and Rongxin Wang
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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

Energies, 2023, vol. 16, issue 15, 1-15

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.

Keywords: permanent magnet synchronous motor (PMSM) drives; inverter; open-circuit fault; fault diagnosis; residual voltage (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: 2023
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