摘要：基于磁场调制原理提出了一种应用于磁力齿轮的工形调磁铁块，建立了基于工形调磁铁块的磁力齿轮有限元模型。分析磁力齿轮内外气隙的磁密分布，论证了工形调磁铁块结构的可行性。通过计算磁力齿轮内外转子的最大静态转矩，发现基于工形调磁铁块的磁力齿轮有稳定的传动比和高转矩密度。研究磁力齿轮的稳态转矩特性，发现内外转子的转矩脉动存在很大差异。基于工形调磁铁块的磁力齿轮在拥有相同传动性能的同时，减少了材料的用量，降低了制造成本。
关键词：工形调磁铁块；磁密分布；最大静态转矩；材料用量
Abstract: Based on the magnetic field modulation principle, the paper proposed a Hsection ferromagnetic polepiece, which was applied to magnetic gear. This paper also built a finite element model of the magnetic gear, which incorporated Hsection ferromagnetic polepieces.  Through the analysis of the airgap flux density distribution in the inner airgap and outer airgap, the results demonstrated that the feasibility of Hsection ferromagnetic polepiece. By calculating the largest static torque of the inner rotor and the outer rotor, the magnetic gear with Hsection ferromagnetic polepieces has stable transmission ratio and high torque density. The study of the steadystate torque characteristics of magnetic gear shows that there are considerable differences in torque ripple between inner rotor and outer rotor. Compared with the magnetic gear based on field modulation magnetic, which incorporates traditional ferromagnetic polepieces, the proposed magnetic gear with Hsection ferromagnetic polepieces reduces the amount of material and lowers the manufacturing cost.
Key words: Hsection ferromagnetic polepieces; flux density distribution; the largest static torque; the amount of material