磁悬浮列车碳纤维复合材料车体接地系统设计

doi:10.19595/j.cnki.1000-6753.tces.L90335

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Abstract The grounding system is an important factor affecting the operation safety of maglev train. The structure of maglev train body, track structure and current collection mode are obviously different from other wheel rail traffic modes, so the grounding design needs special consideration. At the same time, with the application of lightweight carbon fiber composite materials in the maglev car body, the car body has become a poor conductor, and the grounding equipment can not be connected to the earth through the car body, which makes the grounding system become a difficult problem in the design of carbon fiber car body. Based on this, this paper analyzes the influence of carbon fiber composite structure on the grounding circuit of car body. After introducing the main grounding technology classification of maglev train, a set of design ideas of grounding system for carbon fiber composite car body structure is proposed. Then, on the basis of theoretical analysis, the grounding circuit model is built with Maxwell simulation software, and the resistance of vehicle body grounding circuit is calculated by simulation. Finally, the distribution of fault current in grounding circuit is analyzed to evaluate the effectiveness of grounding system.

Key words： Magnetically levitated train carbon fiber composite car body grounding system design aluminum alloy frame grounding circuit

Received: 09 July 2020

PACS:	TM922.3
	U266.4

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	Cai Jiao
	Wang Shujin
	Zhang Liwei
	Yang Jun
	Shen Lu

Cite this article:

Cai Jiao,Wang Shujin,Zhang Liwei等. Design of Grounding System for Carbon Fiber Composite Car Body of Maglev Train[J]. Transactions of China Electrotechnical Society, 2021, 36(zk2): 746-754.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L90335 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/Izk2/746

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