FEA investigation of Hybrid Excitation Flux switching motor with modular rotor for electric vehicles

Abstract Nowadays, the increasing demand for compact, lightweight, and high-performance motors in electric vehicle systems positions the flux switching motor (FSM) as a strong candidate due to its robust rotor design. However, traditional FSMs often face limitations in magnetic flux control and torque production. Therefore, this paper presents a modular rotor hybrid excitation flux switching motor (HEFSM) designed specifically for electric vehicles. The motor is modelled using JMAG Designer v18.1, and its performance is evaluated through finite element analysis (FEA). The proposed motor is analysed in terms of flux lines, flux distribution, cogging torque, and back EMF. Simulation results reveal that the back EMF and cogging torque achieved are approximately 30 V and 20.3 Nm, respectively. The novel modular rotor configuration significantly shortens the magnetic flux path, which enhances torque density, improves magnetic flux control, and increases overall motor efficiency. This innovative HEFSM design not only bridges existing performance gaps but also offers a sustainable, manufacturable, and high-performance solution for modern electric mobility.