Inter-Turn Short-Circuit Fault Diagnosis Method for Dual Three-Phase PMSM Based on Voltage Demodulation

2025/01/13 by Lijun Xiao, Shaobin Li, Chengsi Liu +1 · 1 citation
Engineering · #Machine Fault Diagnosis Techniques #Power System Reliability and Maintenance #Power Systems Fault Detection

paper · doi:10.1109/tmag.2025.3528942

Abstract

This article proposed an inter-turn short-circuit (ITSC) fault diagnosis method for dual three-phase permanent magnet synchronous motor (DTPPMSM) based on voltage demodulation. The method is established based on the extraction and analysis of 2nd harmonics of d- and q-axis voltage caused by ITSC fault. This article analyzed the influence of ITSC fault on d- and q-axis voltage and pinpointed the relationship between the amplitudes of 2nd voltage harmonics and ITSC fault severity. On this basis, the 2nd harmonics of d- and q-axis voltage are extracted and properly transformed in time domain to form a fault indicator, thus achieving a quantitative and online diagnosis of ITSC fault severity. The correctness of the proposed method is verified by both finite element analysis (FEA)-based field-circuit coupling method and prototype experiments.

Cited by

• Real-Time Zero-Sequence-Voltage Estimation and Fault-Tolerant Control for an Open-Winding Five-Phase Fault-Tolerant Fractional-Slot Concentrated-Winding IPM Motor Under Inter-Turn Short-Circuit Fault. [europepmc]

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