Analysis of the Stator Winding Fault of Induction Motor Using COMSOL Multiphysics

Three-phase induction motors are widely used in the industrial sector. Even if their construction is rather simple resulting in high reliability, some unexpected faults can occur during their operation. Among them, the stator winding faults belong to the most common failures. In this paper, the simulation has been carried out for stator coil-to-ground fault using COMSOL Multiphysics software. This failure causes highly unbalanced stator currents causing changes in rotor currents, motor inner torque, speed, etc. Some simulation results are presented and discussed in this paper.