Analysis of an Axial-Module Flux-Switching Permanent Magnet Machine based on field modulation theory

Abstract

The purpose of this paper is to develop a novel axial-modular flux switching permanent magnet (AM-FSPM) machine with a sinusoidal flux-linkage waveform and high output torque. Firstly, the operation principle is introduced by field modulation theory. Based on the magnetic circuit analysis, the even harmonic cancellation effect in the flux linkages of the AM-FSPM machine is investigated. Then, the high output torque capability of the AM-FSPM machine is proved by the power sizing equation. In addition, the harmonics distributions in the AM-FSPM machine are revealed by the air-gap flux density mathematical models of two modular parts. Finally, the electromagnetic characteristics of the AM-FSPM machine are investigated by 3D-FEA.