Z型极靴聚磁式磁齿轮设计与仿真分析

Design and simulation analysis of a flux focusing magnetic gear with Z-type pole-pieces

提出并研究一种Z型极靴聚磁式磁齿轮(ZP-FFMG).在该磁齿轮结构中,Z型极靴可以耦合转子端面和圆柱面的磁通.通过三维仿真可知,Z型极靴聚磁式磁齿轮中存在有助于传递转矩的轴向和径向磁通分量.对比分析传统聚磁式磁齿轮(FFMG)和Z型极靴聚磁式磁齿轮,结果表明,与传统聚磁式磁齿轮相比,Z型极靴聚磁式磁齿轮的传递转矩提高42%,转矩密度增加15 kN·m/m^(3),同时磁通密度也有改善.

A flux focusing magnetic gear with Z-type pole-pieces(ZP-FFMG)was presented and investigated.In this magnetic gear structure,the proposed Z-type pole-pieces can couple the magnetic flux of the end face and cylindrical face of rotors.The 3D simulation shows that there are axial and radial magnetic flux components in the ZP-FFMG,which are helpful to torque transmission.A comparative analysis of traditional flux focusing magnetic gear(FFMG)and ZP-FFMG was given.The results show that compared with the traditional FFMG,the transmission torque of the ZP-FFMG is increased by 42%,the torque density is increased by 15 kN·m/m^(3),and the magnetic flux density is also improved.