| Title |
Early Diagnosis and Fault Severity Evaluation of Stator Turn Open Fault in PMSM Using Zero-Sequence Voltage and Phase Difference Analysis |
| DOI |
https://doi.org/10.6113/TKPE.2026.31.4.308 |
| ISSN |
1229-2214(pISSN), 2288-6281(eISSN) |
| Keywords |
Fault diagnosis; Permanent magnet synchronous motors (PMSM); Phase difference; Stator turn open fault; Zero-sequence voltage (ZSV) |
| Abstract |
This study proposes a sensorless diagnostic approach for stator turn open fault (STOF) in permanent magnet synchronous motors (PMSMs) using zero-sequence voltage (ZSV) analysis and phase difference evaluation. A fundamental frequency component in ZSV enables fault detection, while phase difference deviations identify the faulty phase and assess severity. The proposed diagnostic method integrates the frequency components of the extracted ZSV and phase deviation values to comprehensively determine STOF occurrence, the faulty phase, and its severity. It allows early STOF detection without mechanical sensors, providing a cost-effective solution for predictive maintenance. Experimental validation confirms its effectiveness in improving reliability and lowering maintenance costs for PMSMs. |