Abstract
One novel 6/7 (the pole number of stator/rotor) biased flux permanent magnet machine with auxiliary teeth (AT-BFPMM) is proposed in this paper. The stator of new machine is composed by modular T-shaped lamination segments sandwiched with circumferentially magnetized permanent magnets (PMs) and the rotor is similar with that of switched reluctance machines. The magnetization direction of PMs on both sides of auxiliary teeth is kept the same, while it is not for the PMs on both sides of teeth with armature windings. Then, the proposed machine is optimized by using two-dimension finite element algorithm based on given specifications and optimization strategy. Finally, comparative study between the proposed machine and the original biased flux permanent magnet machine (ORI-BFPMM) with the same outside radius and axial length is presented. It demonstrates that the proposed AT-BFPMM has much higher power factor, lower torque ripple, higher efficiency, and stronger overload capability than those of ORI-BFPMM.
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