强电流滑动电接触下最佳法向载荷

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Abstract In the pantograph current collection system, the major parameters, such as wear loss rate, current-carrying efficiency and stability, reflect the quality of the pantograph-catenary system. There is a close relationship between those parameters and the normal load between the pantograph slide and the contact wire. Appropriate normal load minimizes the wear rate and maintains high performance of current-carrying efficiency and stability. The variation law of wear loss, current-carrying efficiency and stability of current-carrying is obtained under various operating conditions through Cu-base powder metallurgy strip rubbing against the Cu-Sn wire. Then the support vector machine(SVM) is used to establish the regress model with the dependent variables of wear loss rate, current-carrying efficiency and stability, normal load, velocity and current as the independent variables. The optimal normal load and Pareto optimal solutions under the condition of the specific velocity and current are acquired through differential evolution-estimation of distribution algorithm(DE-EDA).

Key words： Pantograph current collection system support vector machine, DE-EDA optimal normal load Pareto optimal solutions

Received: 30 August 2012 Published: 16 June 2014

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TM501

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	Shi Guang
	Chen Zhonghua
	Guo Fengyi

Cite this article:

Shi Guang,Chen Zhonghua,Guo Fengyi. Optimal Normal Load of Sliding Electrical Contacts Under High Current[J]. Transactions of China Electrotechnical Society, 2014, 29(1): 23-30.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I1/23

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