Farshad Kiani - Department of Electrical Engineering, K.N.Toosi University, Tehran, Iran
Mohammad Ardebili - Department of Electrical Engineering, K.N.Toosi University, Tehran, Iran

This paper presents a new axial flux surface mounted permanent magnet motor topology with field control capability which is a good candidate for electric vehicles. The advantage of this motor is the possibility of field weakening at high speeds, which is the most important demand for such applications. The motor structure and sizing equations are discussed. Optimal configuration is then obtained using design optimization. In order to demonstrate the mechanism of the field control and characteristics of this motor, a 1 kW axial flux motor is analysed in detail, using 3D Finite Element Analysis. The air gap flux density, flux linkage and control range components have been evaluated. The FEA results have well validated the analytical design process.

OPTIMIZATION, AXIAL FLUX MACHINES, ELECTRIC VEHICLE, PERMANENT MAGNET MACHINES, FLUX WEAKENING.