Electromagnetic Performance Analysis of a Partitioned Rotor Hybrid-Excited Flux-Switching Permanent Magnet Machine

This paper proposes a partitioned rotor hybrid-excited flux-switching machine, in which the ferrite permanent magnets and the DC field windings both serve as magnetic excitation sources. Firstly, the electromagnetic performances, such as the phase flux, back-EMF, electromagnetic torque, and so on, are presented. Then, both the flux-weakening and flux-strengthening capabilities are evaluated in details according to the electromagnetic torque characteristics under different field current. Finally, the results show that the proposed motor can not only avoid external flux leakage and realize the low-cost design, but also possesses wide flux-regulation range, which have potential application prospect in the electric vehicles.