Levitation Force Characteristics and Parameter Optimization of Permanent Magnet Tracks

doi:10.3969/j.issn.1004-132X.2023.19.012

Abstract

Abstract: Facing on the high temperature superconducting flux pinned maglev trains， a method of optimizing permanent magnet tracks was proposed by Taguchi orthogonal method. The influences of Halbach double peak permanent magnet tracks size on magnetic field was studied by finite element method， and the influencing factors were optimized in order to obtain the comprehensive magnetic field performance. A method of equivalent treatment of high-temperature superconductors(abbreviation for equivalent treatment method) was proposed based on frozen image mode， and the correctness of the equivalent treatment method was verified by experimental data. The results show that the influences of the height of the permanent magnet tracks on the average magnetic flux intensity and the average magnetic flux intensity per unit mass are far greater than that of the sectional width， and the pure iron thickness is a non-significant factor. Based on the equivalent treatment method， it is found that the suspension forces increase as the suspension gaps decrease. The suspension forces provided by the optimized permanent magnet railway are of 1.5 times that provided by the experimental permanent magnet tracks， the suspension stiffness increases rapidly as the number of rows of high temperature superconductors increase.

Key words: high temperature superconducting flux pinned maglev train, permanent magnet tracks, Taguchi method, parameter optimization, levitation force

摘要： 面向高温超导钉扎磁悬浮列车，提出了一种利用田口正交方法优化永磁轨道参数的方法，通过有限元法研究了Halbach型双峰永磁轨道的尺寸对磁场的影响，以综合磁场性能最佳为目标对影响因素进行了优化。基于冻结镜像模型提出了等效处理高温超导体的方法（简称等效处理方法），并通过实验数据验证了该方法的正确性。研究结果表明，永磁轨道截面高度对平均磁感应强度和单位质量平均磁感应强度的影响远超截面宽度对它们的影响，纯铁厚度为非显著影响因素；基于等效处理方法得到的悬浮力随悬浮间隙的减小而增大；优化永磁轨道提供的悬浮力为实验永磁轨道提供悬浮力的1.5倍，悬浮刚度随高温超导体行数的增大迅速增大。

关键词: 高温超导钉扎磁悬浮列车, 永磁轨道, 田口法, 参数优化, 悬浮力

CLC Number:

U237

ZHANG Mingliang, YANG Dawei, LI Mingyuan, YANG Xinmeng, LIU Liru, ZHANG Lianpeng. Levitation Force Characteristics and Parameter Optimization of Permanent Magnet Tracks[J]. China Mechanical Engineering, 2023, 34(19): 2370-2380.

张明亮, 杨大伟, 李明远, 杨新梦, 刘丽茹, 张连朋. 永磁轨道参数优化和悬浮力特性研究[J]. 中国机械工程, 2023, 34(19): 2370-2380.

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