Analytical Modelling, Optimization and Electromagnetic Performance Analysis of Electrically Excited Flux Switching Motor

Flux switching motors (FSMs) with conventional stator slots have relatively low copper slot filling factor. In this paper a new octane modular stator with pentagon shape slot electrically excited FSM that has comparatively higher copper slot filling factor is analyzed analytically to reduce the computational complexity, high computational time and high drive storage. The analytical results of the proposed EEFSM are validated via finite element method. Furthermore, initial design is optimized to improve the electromagnetic performance, finally prototype is fabricated and tested experimentally. There is good agreement among the analytical, FEA and experimental results with variation of 3 to 5%. The average torque of the optimized design has improved 30%, cogging torque suppressed 36%, and torque ripples reduced 38%, which has improved the performance of EEFSM in terms of low acoustic noise, low vibration and longer motor lifetime. The proposed octane modular stator can be easily unfolded for windings maintenance, coils placement and motor transportation in case of large size applications.