Axial Ferrite-Magnet-Assisted Synchronous Reluctance Motor

P. Akiki (1) , Maya Hage-Hassan (1) , M. Bensetti (1) , J-C. Vannier (1) , D. Prieto (2) , Mike Mcclelland (2)

1 GeePs - Laboratoire Génie électrique et électronique de Paris
2 Leroy Somer Motors

This paper presents a noval 18 poles /16 slots Axial Flux Permanent Magnet-Assisted Synchronous Reluctance Motor (AF-PMASynRM) with non-overlapping concentrated winding. At first, the torque ripple and iron losses are analyzed using 3D Finite Element Analysis (3D-FEA). Then, a comparison between 3D-FEA and 2D-FEA based on flux and iron losses is established. In this paper, we propose to design the motor for high torque low speed application using a multiobjective optimization. In this kind of iterative procedure, the use of Finite Element is generally time consuming. Thus, we propose a 2D analytical saturated model that considers the local saturation near the iron bridges and the slot tangential leakage flux. The magnetic model is coupled with an electrical model that computes the power factor and the voltage at the motor terminals. A loss model is also developed to calculate the copper and the iron losses. The proposed analytical model is 5 times faster than the 2D- FEA. The optimal axial structure is compared to a previously optimized radial motor in order to evaluate the design benefits of axial flux machines.

Keywords: iron losses; 3D-FEA; high torque low speed application; iron bridges; slot tangential leakage flux; magnetic model; electrical model; optimal axial structure; axial flux machines; torque ripple; finite element analysis; permanent magnet-assisted synchronous reluctance motor; radial motor; axial ferrite-magnet; iterative procedure; Index Terms-Analytical model; Concentrated winding; Electrical machines; IPM motor; Multi-V-shape magnets

Domains: Engineering Sciences [physics]

P. Akiki, Maya Hage-Hassan, M. Bensetti, J-C. Vannier, D. Prieto, et al.. Axial Ferrite-Magnet-Assisted Synchronous Reluctance Motor. 2018 XIII International Conference on Electrical Machines (ICEM), Sep 2018, Alexandroupoli, Greece. pp.583-589, ⟨10.1109/ICELMACH.2018.8507245⟩. ⟨hal-02401683⟩