Modelling and Simulation of Three-Phase Induction Motor to Diagnose the Performance on Inter-Turn Short Circuit Fault in Stator Winding

In this paper, the mathematical model of Three Phase Induction Motor is studied and from this the model for the Inter-Turn short fault in stator winding is derived. First the model is derived for the balanced conditions and then it is for unbalanced conditions by shorting the stator turns one phase. The performance on both the conditions is presented. The stator winding inter turn short circuit fault is most common source of breakdowns in induction motors. The early detection of inter-turn short circuit fault during motor operation would eliminate some subsequent damage to adjust coils and stator core, reducing the maintenance costs. In present paper the performance on balanced supply condition and inter-turn short circuit conditions by MATLAB simulation is discussed.