Inter-turn faults detection in Induction Motor drives using zero-sequence signal injection

M. OTERO; G. R. BOSSIO; P. DE LA BARRERA; O. TYSHAKIN; R. LEIDHOLD

Amalfi

Simposio; 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM); 2018

IEEE

This paper presents a strategy for detecting stator inter-turn faults in induction motors (IM), by using a zero sequence high-frequency signal injection. The derivatives of the motor currents are analyzed. The subsequent signal processing allows us to study how these signals change its value as a consequence of stator inter-turn faults. A feature of the strategy is that the zero sequence high-frequency signal is generated by a standard space vector modulation of the IM drive. Experimental results are presented, validating the fault detection strategy.