A current signature based stator main winding fault detection technique for single-phase induction machine

Abstract

This paper presents a simple, cost-effective technique of stator winding inter-turn fault detection that is applied to a single-phase induction machine while in operation. The technique emphasizes on sensing the stator current of the induction motor and analyzing the current for detecting the fault. The technique is minimalist and uses less number of sensors and thus cost-effective and can also be easily implemented. The technique is also non-invasive and thus less intricate. The proposed scheme can be used on-line for fault diagnosis. Experimental studies on a machine with main winding inter-turn fault and comparison of the findings with a healthy machine of similar ratings shows the effectiveness of the proposed method.