Rotor pole analysis of five-phase outer rotor field excited switched flux motor for in-wheel application

Outer rotor switched flux machines (ORSFM) provide crucial role in high-speed applications. The flux excitation sources are enclosed in the stator, resulting in a totally free and passive rotor, making the switched flux machine more appropriate for high-speed and industrial applications. Outer rotor flux switching machine for in-wheel and direct drive application is introduced, requiring mechanical gear as they are proficient in high torque at low speed. Additionally, multiphase flux switching machines inherit the benefits of traditional FSPM machines as well as the capabilities of multiphase machines, e.g. high torque density, high fault-tolerant capability, and low torque pulsations. In this paper, a five-phase outer rotor wound field excitation flux switching machine with 17-P/10-slot and 24-P/10-slot is discussed. Various performance parameters like operating principle, flux linkage, self and mutual inductance, cogging torque, back electromotive force, harmonics, air gap flux density, and average electromagnetic torque are analysed.