A SIMPLIFIED MODELING APPROACH FOR ACCOUNTING SKEWING EFFECT IN ROTOR BARS OF SQUIRREL CAGE INDUCTION MOTOR AND ITS APPLICATION IN MOTOR INDUCTANCE CALCULATION

Abstract

Nowadays 2D Modified winding function theory (2D-MWFT) is extensively used to model the squirrel cage induction motor. Squirrel cage induction motor with inclined eccentricity can be modeled using this theory. In order to enhance correctness of model, it is preferred to include the skewing of rotor bars along with eccentricity while computing the mutual inductance between stator and rotor and also between rotor bars. In this paper, a new methodology is presented to calculate the mutual inductance between stator and skewed rotor winding along with eccentricity using 2D-MWFT and its impact on various machine parameters are discussed.