Performance Evaluation of a Nine-Phase Induction Motor using Finite Element Analysis

In this paper, a nine-phase induction motor is proposed with a comparison of a three-phase motor. The nature of spatial harmonic reduction in nine-phase motors is described and power losses reduction is presented. Both models are analyzed using finite element analysis (FEA), providing detailed results of power losses, magnetic flux density, torque ripple and current density. Data analysis method and FEA computational load issues are described in this paper. For analysis purposes, an operating point based on the Worldwide harmonized Light duty Test Cycle (WLTC) is selected and evaluated in detail. Finally, two speeds are chosen to fully verify the extent of improvement in the proposed model.