Design of 12-slot 10-pole Permanant Magnet Flux-Switching Machine with hybrid excitation for hybrid electric vehicle

Permanent Magnet Flux Switching Machine (PMFSM) is an interesting machine for electric propulsion system application because of its high power density and robust rotor structure. This paper presents some design optimization studies on PMFSM with hybrid excitation applied to a hybrid electric vehicle, which have all active parts in the stator. A reduction of permanent magnet material for a constant torque and an extension in speed and torque ranges are chosen for the optimization aims. For this purpose, the original PMFSM, which has been already proposed by other researchers, is firstly just transformed to the target machine size and then, the design problem is made clear. To obtain the necessary drive performances, some design optimization are executed by means of FEA-based trial and error. As a result, it shows the proposed design is suitable for high speed HEV.