Electromagnetic Performance Analysis of Hybrid Excited Seg-mental Rotor Flux Switching Machine

Due to high torque density, simple rotor structure and good heat dissipation, the electrically and permanent magnet (PM) excited segmental rotor flux switching machines (SRFSMs) have attracted much attentions in recent years [1], [2]. The machine topology [3], analysis method [4], and torque ripple reduction method [5] are studied in the literatures. In order to reduce the excitation loss of electrically excited SRFSM and increase the magnetic field regulation capacity of PM excited SRFSM, the new hybrid excited SRFSM is proposed and the analytical subdomain model is derived to calculate the magnetic field and electromagnetic performance. The magnetic field regulation capacity is verified with the results of finite element method (FEM) and prototype machine experiment.