考虑剩磁作用的中低速磁浮电磁力分析

刘清辉; 单磊; 马卫华; 卢相宇; 罗世辉

doi:10.3969/j.issn.0258-2724.20220281

考虑剩磁作用的中低速磁浮电磁力分析

doi: 10.3969/j.issn.0258-2724.20220281

1.
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
2.
山东和顺电气有限公司，山东肥城 271600

基金项目: 国家自然科学基金面上项目（51875483）

详细信息

作者简介:
刘清辉（1993—），男，博士研究生，研究方向为磁浮列车磁轨关系及控制，E-mail：932095973@qq.com

通讯作者:
马卫华（1979—），男，研究员，博士，研究方向为磁浮列车系统动力学，E-mail：mwh@swjtu.edu.cn

中图分类号: U266.4
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- 被引次数: 0
出版历程
- 收稿日期: 2022-04-19
- 修回日期: 2022-07-12
- 网络出版日期: 2023-03-09
- 刊出日期: 2022-08-29

Electromagnetic Force Analysis of Medium−Low-Speed Maglev Considering Remanence

1.
State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031, China
2.
Shandong Heshun Electric Limited Company, Feicheng 271600, China

摘要

摘要:
为了探究悬浮电磁铁剩磁对EMS (electro-magnetic suspension)中低速磁浮列车垂向电磁力的影响，首先，分析了悬浮电磁铁相对磁导率变化规律，并基于等效磁路法建立单电磁铁悬浮模型；其次，根据Jiles-Atherton磁滞理论研究了悬浮电磁铁的极限磁滞回线状态，分析了悬浮电磁铁剩磁的动态作用；最后，通过电磁力台架试验开展垂向电磁力对比验证，并提出了最大化利用电磁效率的措施. 研究结果表明：在线圈电流处于0～20 A时，悬浮电磁铁剩磁近似等于常量，垂向电磁力的主要影响因素是线圈电流；在线圈电流处于20～40 A时，悬浮电磁铁达到磁饱和状态，且由于处于极限磁滞状态使得悬浮电磁铁具有最大剩磁作用，最大差值约为1 kN，随着线圈电流进一步增加，悬浮电磁铁相对磁导率的降低使得剩磁作用逐渐减弱.
- 磁浮列车 /
- 电磁铁 /
- Jiles-Atherton磁滞理论 /
- 剩磁
Abstract:
In order to explore the influence of the electromagnet remanence on the vertical electromagnetic force of EMS medium−low-speed maglev train, firstly, the change rule of the relative permeability of electromagnet is analyzed, and the levitation model of a single electromagnet is established based on the equivalent magnetic circuit method. Secondly, the limit hysteresis loop state of the levitation electromagnet is studied according to the Jiles-Atherton Hysteresis Theory, and the dynamic effect of the electromagnet remanence is analyzed. Finally, the vertical electromagnetic force is verified by the electromagnetic force bench test, and measures to maximize the use of electromagnetic efficiency are proposed. The results show that when the coil current is 0−20 A, the levitation electromagnet remanence is approximately equal to a constant, and the main influence factor of vertical electromagnetic force is the coil current. When the coil current is 20−40 A, the levitation electromagnet reaches the magnetic saturation state, and the levitation electromagnet has the maximum residual magnetism due to the limit hysteresis state, and the maximum difference is about 1 kN. With the further increase of the coil current, the reduction of the relative permeability of levitation electromagnet gradually weakens the remanence effect.
- maglev vehicles /
- electromagnets /
- Jiles-Atherton hysteresis theory /
- remanence

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图 1 电磁铁相对磁导率与磁感应强度关系

Figure 1. Relationship between relative permeability of electromagnet and magnetic induction intensity

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图 2 悬浮原理

Figure 2. Schematic of levitation fundamental

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图 4 考虑铁芯剩磁作用的等效磁路图

Figure 4. Equivalent magnetic circuit diagram considering residual magnetic effect of iron core

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图 3 单电磁铁磁密仿真

Figure 3. Magnetic density simulation of single electromagnet

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图 5 电磁铁极限磁滞回线

Figure 5. Limit hysteresis loop of electromagnet

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图 6 剩磁作用下的电磁铁B-H关系

Figure 6. B-H relationship of electromagnet under remanence

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图 7 8 mm间隙下电磁力-电流关系

Figure 7. Relationship between levitation force and current under 8 mm gap

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图 8 电磁铁剩磁对电磁力的影响

Figure 8. Influence of electromagnet remanence on levitation force

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图 9 剩磁作用下单悬浮架电磁力变化

Figure 9. Electromagnetic force variation of single levitation frame under remanence

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图 10 电磁力试验台

Figure 10. Suspension force test bed

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图 11 电磁力-线圈电流-悬浮间隙三维关系

Figure 11. Three dimensional relationship of electromagnetic force levitation current levitation gap

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图 12 试验对比分析

Figure 12. Comparative analysis of test results

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