A Novel Detection Method of Stator Winding Inter-turn Short Circuit Fault in Induction Motors

It is of great significance to investigate and improve the detection method of stator winding inter-turn short circuit fault in induction motors.The transient simulation of stator winding inter-turn short circuit fault,as well as broken rotor bar fault,has been completed.By thoroughly analyzing the simulation results,this paper points out that the detection methods of stator winding inter-turn short circuit fault,presented in the previous literature,may misinterpret broken rotor bar fault as stator winding inter-turn short circuit fault.And then,a novel detection method of stator winding inter-turn short circuit fault,which blends perfectly the spectrum correction and self-adaptive filter techniques,is proposed.Simulation and experimental results demonstrate that the novel method is immune to broken rotor bar fault and thus more reliable than those presented previously.