零磁通线圈式永磁电动悬浮设计及特性研究

石洪富; 邓自刚; 黄欢; 祝翰林; 向雨晴; 郑珺; 梁乐; 杨晶

doi:10.3969/j.issn.0258-2724.20211062

零磁通线圈式永磁电动悬浮设计及特性研究

doi: 10.3969/j.issn.0258-2724.20211062

石洪富^1,,
邓自刚^2, ,,
黄欢²,
祝翰林³,
向雨晴⁴,
郑珺²,
梁乐⁵,
杨晶⁶

1.
西南交通大学信息科学与技术学院, 四川成都 610031
2.
西南交通大学轨道交通运载系统全国重点实验室, 四川成都 610031
3.
西南交通大学电气工程学院, 四川成都 610031
4.
西南交通大学机械工程学院, 四川成都 610031
5.
西南交通大学超高速真空管道磁悬浮研究中心, 四川成都 610031
6.
中车长春轨道客车股份有限公司, 吉林长春 130000

基金项目: 四川省科技厅创新团队项目（2022JDTD0011）

详细信息

作者简介:
石洪富（1993—），男，博士研究生，研究方向为电动悬浮及直线驱动，E-mail：18223169363@163.com

通讯作者:
邓自刚（1982—），男，研究员，博士，研究方向为磁悬浮技术及应用，E-mail：deng@swjtu.cn

中图分类号: O442
计量
- 文章访问数: 505
- HTML全文浏览量: 378
- PDF下载量: 61
- 被引次数: 0
出版历程
- 收稿日期: 2021-12-24
- 修回日期: 2022-06-07
- 网络出版日期: 2022-12-06
- 刊出日期: 2022-06-09

Design and Characteristics of Null-Flux Permanent Magnet Electrodynamic Suspension System

1.
School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China
2.
State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031, China
3.
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
4.
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
5.
Research Center for Super-High-Speed Evacuated Tube Maglev Transport, Southwest Jiaotong University, Chengdu 610031, China
6.
CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130000, China

摘要

摘要:
为改善平板式永磁电动悬浮导向能力弱、磁阻力大的问题，提出一种新型的永磁电动悬浮系统. 首先，阐述系统的结构及原理并建立包含磁体纵向边端效应的三维电磁力解析模型并求解；其次，搭建三维有限元模型，通过对比解析模型计算结果与有限元仿真结果验证了解析模型的准确性和可靠性，并基于有限元模型分析了电磁力的时域特征和磁体与轨道线圈间的电磁耦合过程；最后，以浮重比和浮阻比为性能指标，研究了系统的悬浮性能及浮阻特性，其结果与平板式电动悬浮系统进行对比分析. 研究结果表明：该系统具有可行性，其结构简单、能耗低、浮阻比大且克服了导体板式永磁电动悬浮导向能力弱、浮阻比小的问题；在中高速域内，其浮阻比可达65，是平板式永磁电动悬浮的2.5倍；本文提出的系统及三维电磁力解析模型可为未来的磁悬浮交通发展提供参考.
- 永磁电动悬浮 /
- Halbach阵列 /
- 线圈阵列 /
- 零磁通线圈 /
- 浮阻比
Abstract:
A novel permanent magnet electrodynamic suspension system is proposed to improve the guidance ability and reduce the drag force. First, a three-dimensional electromagnetic-force analytical model considering the longitudinal end-edge effect of the magnets is established and solved. Second, a three-dimensional finite element model is built. Compared with simulation results, the accuracy and reliability of the analytical model are verified. On the basis of the finite element model, the time domain characteristics of electromagnetic forces and the coupling process between the magnets and the guideway coils are analyzed. Finally, the levitation performance and levitation-drag characteristics of the system are studied according to the levitation-to-weight ratio and the levitation-to-drag ratio. Compared with those of a flat-type electrodynamic suspension system, the results reveal that the proposed system is feasible, with a simple structure, low energy consumption, and large levitation-to-drag ratio. The system overcomes issues associated with a weak guidance ability and a low levitation-to-drag ratio. In the high-speed range, the levitation-to-drag ratio can reach 65, which is 2.5 times higher than that of planar permanent magnet electrodynamic suspension. The proposed system and the corresponding three-dimensional analytical model can lay a foundation for future maglev transportation.
- permanent magnet electrodynamic suspension /
- Halbach array /
- coils array /
- null-flux coil /
- levitation-to-drag ratio

HTML全文

图 1 车载Halbach永磁阵列电动悬浮系统结构

Figure 1. Schematic diagram of PM EDS with Halbach array

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图 2 永磁体阵列等效为线圈分布示意

Figure 2. Schematic diagram of the distribution of coil which is the equivalent of PM

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图 3 永磁电动悬浮系统动态电路模型

Figure 3. Dynamic circuit model of PM EDS

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图 4 八模块Halbach阵列截面示意

Figure 4. Cross section diagram of eight piece Halbach array

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图 5 三维有限元仿真模型

Figure 5. 3D finite element model of PM EDS

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图 6 数值模型与仿真模型电磁力的对比验证

Figure 6. Verification on the electromagnetic forces of analytical and simulation model

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图 7 多线圈有限元仿真模型

Figure 7. Multi-coil finite element model

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图 8 单阵列与多线圈相互作用的电磁力及感应电流

Figure 8. Electromagnetic forces and the induction current under the interaction of single array and multiple coils

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图 9 单阵列与多线圈的相互作用过程

Figure 9. Electromagnetic interaction process between single array and multiple coils

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图 10 不同横向间隙下的悬浮性能

Figure 10. Levitation performance under different gaps

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图 11 零磁通线圈式电动悬浮的电磁力随速度的变化

Figure 11. Levitation and drag forces as functions of velocity of null-flux electrodynamic suspension system

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图 12 “8”字型线圈中的感应电流

Figure 12. Induction current in single 8-shape coil

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图 13 浮阻比随速度的变化

Figure 13. Levitation-drag ratio as the function of velocity

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表 1 系统模型参数

Table 1. Parameters of PM EDS

轨道线圈^[29]	参数值	永磁体阵列	参数值
长度（x 方向）/mm	350	长度/mm	400
宽度（z 方向）/mm	340	宽度/mm	270
匝数	24	厚度/mm	100
上下环路距离/mm	80	极距/mm	800
横向间隙/mm	20	剩磁/T	1.45
电阻/mΩ	3.6	工作高度/mm	80
上下环路互感/μH	18.4	等效线圈匝数	20
线圈自感/mH	0.26	运行速度/（m·s⁻¹）	15
		磁体重量/kg	104

下载: 导出CSV

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