3D finite element analysis of skewed squirrel‐cage induction motor using novel mesh modification method

Purpose – This paper aims to describe a novel 3D finite element mesh modification method for motors with the skewed rotor in detail, the method having been developed by solving the Laplace equation.Design/methodology/approach – Using the mesh of the skewed squirrel‐cage induction motor created by the novel method, the torque, the bar‐current, the electrical losses and so on are analyzed by the 3D finite element method.Findings – It was found that the torque ripple, the bar‐current ripple and the losses of the motor with the skewed rotor are smaller than those of the motor with the no‐skewed rotor. In addition, the validity of the analysis is clarified by comparing the calculated and the measured results.Originality/value – The usefulness of the method is clarified by the 3D finite element analysis of a skewed squirrel‐cage induction motor.