Comparative Analysis of Different Permanent Magnet Arrangements in a Novel Flux Modulated Electric Machine

A novel dual permanent magnet (PM) machine with Halbach segmentation flux modulation is proposed in this paper, which evolved from a switching PM (FSPM). In order to improve the performance of FSPM, several arrangement methods have been adopted and three new different structures investigated. To achieve fair comparison, all are under same size rotate at speed. The performances output torque back EMF compared. analysis results show that has highest density power efficiency. improved by 100.3% FSPM while volume does not increase too much. unique best structure it only combines vernier together, but also reduces ripple. motor verified simulation using finite-element (FEA).