Design of a New Multi-Port Flux-Modulated Permanent-Magnet Composite Machine

This paper proposes a new multi-port flux-modulated permanent-magnet (FMPM) composite machine. The combination of the multi-port and flux-modulated configurations leads to the large torque capacity, high efficiency and fault-tolerant capability. Firstly, the composite flux modulation principle is specifically illustrated, as a general design principle of FMPM composite machines. Specific performance analysis is carried out to demonstrate the electromagnetic characteristics of the proposed machine, with auxiliary of the harmonic analysis. The composite flux modulation effect is proven for effective contribution to the higher torque density of the proposed FMPM machine. As a result, the proposed machine serves as a promising candidate in electric transportation applications.