Three-Dimensional Finite Element Analysis of Electromagnetic Field for Fifteen-Phase Machine

Three-dimensional finite element analysis of harmonic electromagnetic field in a large and complex structure 15-phase induction machine had been completed.Accurate 3D finite element machine model was established.The current density of stator and rotor,and the entire vector flux density distribution were given,then analyzed and explained.The air gap radial flux density was obtained and had been made harmonic analysis.We can obtain the accurate electromagnetic field distribution and performance parameters through 3D finite element calculation of electromagnetic field.This method can give the basis for the multiphase machine development of new structure and can play reference in terms of structural optimization design.