Magnetization Characteristics and Loss Measurements of the Axial Flux Permanent Magnet Motor's Stator

In this paper, the magnetization characteristics of the stator of the flux focusing type double stator and single rotor (DSSR) axial flux permanent magnet motor (AFPM) are measured and analyzed, using the toroid test setup. The toroid test setup is validated and comparative analysis of the magnetization characteristics of the stacked and tape-wound lamination is carried out. The air-gap flux flows in the axial direction, therefore, the stator of the AFPM should be manufactured by using either the soft magnetic composite (SMC), or the tape-wound electrical steel. The milling technique is adopted to make the slots in the ring, and the iron losses are measured in the slotted and non-slotted structures of the SMC and tape-wound electrical steel. The influence of the physical dimensions, heat-treatment, and gluing of the tape-wound lamination is investigated.