Design and Optimization of the Dual-Stator Axial-Field Flux-Switching Permanent Magnet Motor with High-Torque Density and Low-cost

In this paper, a new dual-stator axial field flux-switching permanent magnet (DSAFFSPM) motor has been proposed to improve the torque density and cost of the machine. In this topology, the 12-pole dual-stator has been located on both sides of one 10-pole inner-toothed rotor. The dual-stator has hosted permanent magnet (PM) type of Bar-PM and the coils. The novelty of this study is development of a technique that can be implemented on PM of the DSAFFSPM structure. In this regard, the proposed analytical design with a sizing equation has been presented and multi-objective optimization is employed to achieve the optimum size by Multi-Objective Genetic Algorithm (MOGA) method. The machine characteristics are acquired and analyzed utilizing the 3D finite element method (3D-FEM). A comparative study has been done to prove the superiority of the performance indices. This topology demonstrates the high-power density and the low vibration and noise due to lower torque ripple and cogging torque. Meanwhile, the Bar-PM topology has lower core loss and thermal stress due to high-efficiency. Consequently, the proposed model provides high torque density and low cost, specifically designed for electric vehicle (EVs) applications.