Performance Analysis and Comparison for Various Excitation Source Salient Rotor with Modular Rotor Permanent Magnet of Flux Switching Machine

Due to the large power/torque density and high efficiency of permanent magnet flux switching magnet (FSPM) are suitable for driving electric vehicles and hybrid electric vehicles. In this paper, flux switching permanent magnet machine (PMFSM), field excitation flux switching machine (FEFSM) and hybrid excitation flux switching machine (HEFSM) with salient rotor topology is compared with modular rotor permanent magnet flux switching machine. On the condition of the same outer diameters, the electromagnetic performances of the machines are analyzed and compared by the two-dimensional (2D) finite element method including the flux density, back electromotive force (EMF), cogging torque, electromagnetic torque, and power. The finite element results show that the modular rotor permanent magnet flux switching machine has greater torque than salient rotor FEFSM, HEFSM, and PMFSM at the rated load with significantly less weight than the others.