燕山大学学报2024，Vol.48Issue(4)：303-311,9.DOI:10.3969/j.issn.1007-791X.2024.04.002
基于输出转矩的同轴式磁齿轮设计
Design formula of coaxial magnetic gear based on output torque
摘要
Abstract
Coaxial magnetic gear(CMG)is the best alternative to mechanical gears because of its high torque density.In view of the lack of design theory in the industrialization of coaxial magnetic gear,the design formula of CMG based on output torque is proposed.Firstly,the optimum design parameters of CMG with different sizes are determined based on the sequential growth rate of the out torque with main parameters increasing.Secondly,the linear relations between the maximum magnetic energy product,the square of the inner diameter of the ferromagnetic pole-pieces(IDFPs)and the output torque are discussed.Finally,the influence of the slope and intercept of output torque with the square of IDFPs on the pole-pairs number of the permanent magnets(MPs)are analyzed.The output torque can be expressed as the functions of the maximum magnetic energy product of PMs,the gap coefficient,the gap length,the flux leakage coefficient,the IDFPs and the pole-pairs number of the MPs on the outer rotor.Three-dimensional finite element simulation shows that the error of the formula is less than 5%.The torque tests of three kinds of prototypes with different size series also show that the calculation error of the formula has high precision.Design theory of CMG based on output torque can greatly shorten the design cycle of magnetic gear.关键词
磁齿轮/输出转矩/半径计算公式/磁能积/气隙系数Key words
magnetic gear/output torque/design formula of radius/magnetic energy product/air-gap coefficient分类
机械制造引用本文复制引用
侯书博,罗帅,产佳,吴文超,周钰峰,郝秀红..基于输出转矩的同轴式磁齿轮设计[J].燕山大学学报,2024,48(4):303-311,9.基金项目
河北省自然科学基金资助项目(E2022203090) （E2022203090）
河北省科技计划资助项目(236Z1902G) （236Z1902G）
江西省科技计划资助项目(20224BBE51040) （20224BBE51040）
