高速动车组运动模型永磁涡流制动解析方法研究  

On analytical method of permanent magnet eddy currentbrake for high speed EMU

作　　者：苑一祥 周文祥[1] 孔振文 祝向阳 Yuan Yixiang;Zhou Wenxiang;Kong Zhenwen

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《现代城市轨道交通》2020年第11期105-109,共5页Modern Urban Transit

基　　金：国家自然科学基金项目(U19A20102)。

摘　　要：高速动车组运动模型车穿越制动装置时,其铝合金侧板与固定的Halbach永磁阵列发生相对运动并产生涡流制动力,从而使车辆快速制动。文章建立涡流制动系统二维模型,推导制动力和法向力解析表达式;根据系统实际参数计算出制动力和法向力随速度变化的特性曲线,并用Maxwell有限元计算结果进行比对;采用制动曲线拟合方法,得到忽略摩擦力及风阻时运动模型制动距离的解析式和算例;用有限元仿真结果进行比对,大幅度提高涡流制动系统设计校核、气隙调整计算效率。When the high-speed EMU model vehicle passes over the brake device,its aluminum alloy side plate and the fixed Halbach permanent magnet array move relative to each other and produce eddy current braking effort,being quickly braked.This paper establishes a two-dimensional model of eddy current braking system,deriving the analytical expressions of braking effort and normal effort.Based on the actual parameters of the system,it calculates the characteristic curves of braking and normal effort varying with speed and compares with the calculation results of Maxwell finite element method,while friction and wind resistance are ignored,and the braking curve fi tting method is used.Compared with the fi nite element simulation results,the calculation efficiency of eddy current brake system design check and air gap adjustment are greatly improved.

关 键 词：高速动车组 运动模型 Halbach永磁阵列 涡流制动 有限元分析 

分 类 号：U260.357[机械工程—车辆工程]