电磁轨道发射装置时变电感梯度建模与分析

doi:10.19595/j.cnki.1000-6753.tces.191611

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Abstract Inductance gradient, an important parameter of electromagnetic rail launcher, weighs strongly on propulsive force and efficiency. There are two main weaknesses in the previous research of inductance gradient: 1) The general analytical method take the rail dimensions into account regardless of the influence of current diffusion, thus the dynamic characteristics cannot be described; 2) Though the finite element method can analyze the influence of the current diffusion, the calculation process is lack of efficiency. Therefore, considering the influence of both rail dimensions and current diffusion, this paper proposes an analytical method to calculate the inductance gradient, which is based on the skin depth and the principle of magnetic energy equivalence. The results calculated by this method were compared with those from different references, and good agreements were obtained. The proposed method can provide an effective theoretical guidance for the optimization design and performance analysis of electromagnetic rail launcher.

Key words： Electromagnetic rail launcher skin depth inductance gradient analytical method

Received: 25 November 2019

PACS:

TM153+.2

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	Peng Zhiran
	Wang Guangsen
	Zhai Xiaofei
	Zhang Xiao

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Peng Zhiran,Wang Guangsen,Zhai Xiaofei等. Modeling and Analysis of Time-Varying Inductance Gradient for Electromagnetic Rail Launcher[J]. Transactions of China Electrotechnical Society, 2020, 35(23): 4843-4851.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191611 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I23/4843

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