Regulation of the pantograph-catenary arc by an alternating transverse magnetic field  

作　　者：Zefeng YANG Chun HUANG Yunfeng LUO Zhiwen HUANG Langyu XIA Huan ZHANG Shangang ZHOU Keliang DONG Wenfu WEI 杨泽锋;黄椿;罗云峰;黄治文;夏琅雨;张桓;周山刚;董克亮;魏文赋(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,People’s Republic of China)

机构地区：[1]School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,People’s Republic of China

出　　处：《Plasma Science and Technology》2025年第3期55-62,共8页等离子体科学和技术(英文版)

基　　金：supported by National Natural Science Foundation of China (Nos.52322704 and 52077182)。

摘　　要：The pantograph-catenary arc has persistently posed a challenge,impeding the advancement of high-speed rail systems.As the velocity of high-speed trains continues to escalate and environmental conditions become increasingly complex,the phenomenon of pantograph-catenary arc drifting has intensified,thereby jeopardizing the safe operation of trains.To enhance the stability of the pantograph-catenary arc,this paper proposes a method to regulate arc using an AC transverse magnetic field(ATMF)and investigates the regulation law of ATMF on an arc in airflow environment.The results indicate that ATMF can effectively maintain arc stability,with the stability enhancing as the magnetic field frequency increases up to a threshold value.In an airflow environment,the stabilization effect is maximized at a frequency of 50 Hz,with arc voltage fluctuation at 4.65 V,accounting for only 5.47%of total arc voltage.It is also found that the arc temperature increases with the frequency of the magnetic field,reaching 4743 K at 10 Hz and 4976 K at 1000 Hz.In addition,the effects of sinusoidal,triangular and rectangular magnetic field excitation currents on the arc are investigated,and it is found that the arc shows the greatest stability in the triangular field,with a voltage fluctuation of 3.04 V.This study provides theoretical support for the application of ATMF regulation to enhance the stability of the pantograph-catenary arc.

关 键 词：ARC PLASMA ATMF pantograph-catenary system 

分 类 号：TG1[金属学及工艺—金属学]