Analysis of the Evolution of Stator Short-circuit and Rotor Bar Breakage Faults in a Squirrel-cage Induction Motor

This paper relates to the study of the evolution of the short-circuit fault in the stator winding and rotor bar breakage fault in a squirrel-cage induction motor. Amplitudes of harmonics of the stator currents and of the magnetic field in the motor proximity are evaluated through dedicated 3D finite element models of the motor. The evolutions of the short-circuit fault and of the bar breakage based on changing of the amplitude of particular harmonics of the stator currents or of the magnetic field are analyzed.