An Improved Magnetic Equivalent Circuit Method for Evaluation of Different Inductances of a Squirrel-Cage Induction Motor in Healthy and Faulty Conditions

摘要

The magnetic equivalent circuit is an efficient method in performance analysis and design of induction machines. This method is based on the geometry of the machine and solving its flux equations. It is capable of including geometry, stator winding distribution, nonlinear characteristics of the magnetic materials, and some faults, such as eccentricity in the modeling of the machine. In this article, different inductances of an induction machine are estimated using a magnetic equivalent circuit that takes into account the yokes, rotor and stator teeth, and rotor bars skewing.