Analysis of static eccentricity in squirrel cage induction motors

In this paper, the asymmetric operational conditions of induction motors and the consequence of these operations are presented. The small power squirrel cage induction motor is modeled dynamically by using Finite Element Method (FEM) for both healthy and eccentric conditions. Different degrees of static eccentricity are examined with the simulation results. The differences between the air gap flux density, current and torque characteristics are investigated for healthy and eccentric conditions. The current harmonics and the torque pulsation caused by harmonics are also analyzed.