A study on a novel multistage-AFPM with modular stator core made of different materials of silicon steel and SMC

In this paper, a 5kW novel multistage axial-flux permanent magnet machine (M-AFPM) is analyzed. As a key part of the machine, stator core of silicon steel and SMC are studied by 3D finite element method (FEM) respectively. No-load, full-load, magnetic field distribution, core loss, etc. are calculated. FEM result indicates that SMC-materials have almost equal influence on EMF, magnetic field distribution and electromagnetic torque. But in aspect of core loss, difference appears between silicon steel and SMC. The FEM result is also verified by the experimental results of the prototype.

[1]  Patrice Delarbre,et al.  Soft Magnetic Powder Composites and Potential Applications in Modern Electric Machines and Devices , 2014, IEEE Transactions on Magnetics.

[2]  Z.Q. Zhu,et al.  A simple method for measuring cogging torque in permanent magnet machines , 2009, 2009 IEEE Power & Energy Society General Meeting.

[3]  F. Caricchi,et al.  Recent Advances in Axial-Flux Permanent-Magnet Machine Technology , 2012, IEEE Transactions on Industry Applications.

[4]  Yunkai Huang,et al.  Comparative Study of High-Speed PM Motors with Laminated Steel and Soft Magnetic Composite Cores , 2007, 2007 IEEE Industry Applications Annual Meeting.