Reduction of cogging torque and electromagnetic vibration based on different combination of pole arc coefficient for interior permanent magnet synchronous machine

Cogging torque and electromagnetic vibration are two important factors for evaluating permanent magnet synchronous machine (PMSM) key issues that must be considered resolved in the design manufacture of high-performance PMSM electric vehicles. A fast accurate magnetic field calculation model interior (IPMSM) is proposed this article. Based on traditional potential permeance method, stator cogging effect complex boundary conditions IPMSM can fully model, so as to realize rapid equivalent magnetomotive force (MMF), air gap permeance, other properties. In article, a 6-pole 36-slot taken an example establish its solution thereby accurately calculated. And validity verified by variety different pole structures, slot combinations machines, prototype experiments. addition, improvement measure with combination arc coefficient also studied based model. effectively weakened. Combined finite element multi-physics coupling characteristics performance comprehensively compared analyzed. The analysis results have well effectiveness. It extended structures or types has very practical value research significance.