关键词: 磁钢夹角, 齿槽转矩, 参数化分析, 健壮设计, 有限元仿真

Abstract:

For V-type magnetic steel internal structure, cogging torque are considerably effected by included angle between two magnet steel through the air gap flux density. An analytical math model was established basing on energy method, for illustrating mathematical correlation of cogging torque and magnet steel angle. Cogging torque parameter had been swept respect to magnet steel angle utilizing motor model. Robust structure had been proposed to reduce the magnetic field saturation phenomenon, weaken the cogging torque and verified the feasibility of this structure after qualitative analysis. The validation of mathematical expression and the robust structure above is proved by finite element model (FEM).

Key words: included magnet angle, cogging torque, parametric sweeping, robust design, finite element analysis