径向调制永磁齿轮磁极数量对传动特性的影响研究  

Study on Influence of Number of Permanent Magnetic Pole Pair on Transmission Characteristic of Radial Modulated Permanent Magnetic Gear

作　　者：肖磊[1] 张海[2] 许宝玉[1] 汪成哲[1] 郝晓茹[1] Xiao Lei;Zhang Hai;Xu Baoyu;Wang Chengzhe;Hao Xiaoru(Direct Drive Elevator Industrial Technology Institute, Henan Polytechnic University Jiaozuo 454000,China;School of Mechanical and Power Engineering,Henan Polytechnic University, Jiaozuo 454000, China)

机构地区：[1]河南理工大学直驱电梯产业技术研究院,河南焦作454000 [2]河南理工大学机械与动力工程学院,河南焦作454000

出　　处：《机械传动》2019年第5期1-5,共5页Journal of Mechanical Transmission

基　　金：河南省重点研发与科技攻关项目(182102210313);焦作市重大科技专项(2016);河南理工大学博士基金项目(B2015-39)

摘　　要：对于永磁齿轮,每一个传动比都可以由主、从动磁极对数量的若干种组合方式来实现。为此,以i=5和相近的传动比为例,选取主、从动磁极对的数量为2/10、3/15、……、7/35共6种组合方案和两组验证对比方案(每组各6种),应用有限元仿真技术,研究了磁极对数量对输出转矩和传动效率的影响。结果表明,输出转矩随磁极对数量的增加呈二次曲线规律变化,且峰值出现在主动磁极对数P_h=4处;而传动效率基本也呈二次曲线变化规律,在P_h=4～7处出现较大的值,但是变化不大。综合考虑输出转矩和传动效率,当传动比在i=5附近时,选取主、从动磁极对数量的组合方案P_h/P_l=4/19,可以获得较好的传动特性。For permanent magnetic gears (PMGs), each transmission ratio can be made by several combinatio ns of the numbers of magnetic pole pairs (NMPP) on the driving and drive n rotors. In order to investigate the influence of NMPP on transmission efficiency and output torque, transmission ratio i=5 is selected, PMGs with 6 combi nations of NMPP and corresponding two groups (each group has 6 combinations) are analyzed, the 6 combinations of NMPP on driving/driven rotors are 2/10, 3/15,…,7/35. Finite element analysis (FEA) simulations indicate that variations of output torque to NMPP on driving rotor (Ph)are quadratic curves with peak values occurring at Ph=4, variations of transmission efficiency to Ph also show quadratic curves basically but with slow change and a little higher values occurring at Ph=4 7. So it is concluded that considering output torque and transmission efficiency together, for PMGs with transmission ratio i being close to 5, the NMPP on driving/driven rotors (Ph/P1) should be selected as 4/19 to get a better transmission characteristics.

关 键 词：径向调制 永磁齿轮 输出转矩 传动效率 有限元分析 

分 类 号：TH132.41[机械工程—机械制造及自动化]