Finite Element Analysis of Induction Motor under Open Phase Fault

Abstract

The open phase fault is much specified in three—phase squirrel cage induction motors. However, this defect develops an unsymmetrical magnetism generates noise and vibration in the motor. Finite Element Method (FEM) is the most accurate technique to analyze the induction motor, because it can include all actual characteristics of both healthy and faulty conditions. In this paper, an FEM to analyze a 2.2 (kW) three—phase squirrel cage induction motor with the open phase fault is proposed. An experimental investigation to display the stator current waveforms with healthy and faulty conditions are obtained and compared under different load operations. The currents obtained are introduced into FEM analysis, which is used for magnetic field calculation and the magnetic flux density in the air-gap, stator teeth and in the stator yoke for both healthy and faulty operations.