Electromagnetic Field Analysis of Permanent Magnet Synchronous Machine and Comparative Investigation according to Machine Topology

This paper deals with the electromagnetic field analysis of permanent magnet synchronous machines (PMSMs) based on finite element method (FEM) for performance comparison. Under the identical machine size condition, this paper proposes a machine with Ferrite PMs as a competitive of the conventional machine with NdFeB PMs, which are rare-earth materials. The proposed machines employ various stator coil winding topology, and their relevant characteristics will be comparatively investigated. In general, since the entire cost to manufacture the electrical machines, it is highly dependent on that of the PMs, the design method addressed in this paper can be one of the useful references.