新型永磁调磁式磁齿轮的设计与优化

为了提高磁齿轮的输出转矩和运行转速、减小永磁体的涡流损耗,提出一种新型永磁调磁式磁齿轮,分析其工作原理和转矩特性,结果表明相比较传统的磁齿轮,新型永磁调磁式磁齿轮具有传动效率高、转矩密度高、可高速传动的优点。在此基础上,为了获得新型磁齿轮的最优结构参数,以提升输出转矩和减小齿槽转矩为优化目标,提出一种基于参数敏感性和响应面法相结合的多目标优化方法,对新型磁齿轮的永磁调磁块、外转子及内转子永磁体等结构参数进行优化设计,利用有限元法分析优化前后新型磁齿轮的电磁性能,表明多目标优化方法可进一步提升新型磁齿轮的输出性能,为其应用和优化设计奠定了基础。

Design and optimization of a novel coaxial magnetic gear for stationary permanent magnet ring

In order to improve the output torque and speed, and reduce the permanent magnet (PM) eddy loss for magnetic gear, a novel magnetic gear with stationary PM ring is proposed. The operating principle and torque performance are analyzed, and the results showed that the novel magnetic gear has high efficiency, high torque density and high speed compared with traditional magnetic gear. Taking high output torque and low cogging torque as the optimization goals, a multi-objective optimization method based on the parameter sensitivity and response surface method is introduced, which aims to accurately obtain the magnetic gear structure parameters. Then, the PM ring, outer rotor and inner rotor are optimized. By analyzing the electromagnetic performances for novel magnetic gear between initial and optimal magnetic gear, the results show that the output torque is improved, and it lays a foundation for its application and optimization design.