Characteristics of the Sliding Electric Contact of Pantograph/Contact Wire Systems in Electric Railways

Guangning Wu, Jie Wu, Wenfu Wei, Yue Zhou, Zefeng Yang and Guoqiang Gao
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Guangning Wu: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Jie Wu: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Wenfu Wei: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Yue Zhou: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Zefeng Yang: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Guoqiang Gao: School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China

Energies, 2017, vol. 11, issue 1, 1-13

Abstract: The sliding electric contact of pantograph/contact wire systems plays a significant part in the current collection stability and operation life of pantograph/contact wire systems. This paper addresses the evolutionary process of sliding electric contact of pantograph/contact wire systems by analyzing three key characteristics including contact resistance, temperature distribution and microstructure. The influence of electric current on contact resistance was interpreted. Furthermore, the evolution of the spatial temperature distribution of the carbon strip was obtained in the zigzag movement, while the dominant role of electric effect in temperature rise was demonstrated. In the end, the wear morphology differences under pure friction and current-carrying conditions were analyzed. The formation of radial cracks was illustrated and its influenced on the wear process was discussed.

Keywords: sliding electric contact; contact resistance; temperature distribution; microstructure (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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