超高速磁浮涡流装置制动力的解析分析

doi:10.19595/j.cnki.1000-6753.tces.190568

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Abstract The eddy-current braking system (ECBS) is vital to the safe operation of a high-speed maglev. This paper used the subdomain method for the analytic calculation of the expression of the eddy-current braking force that is related to parameters, such as speed (or super high speed), exciting current, air-gap length, induction plate thickness and conductivity. An analytical model was established in the 2-D coordinate system. With the magnetic vector potential as a variable, each subdomain of the model could be expressed by Poisson equations. In combination with the expression of air-gap flux density obtained according to the boundary condition between two adjacent subdomains, it is possible to derive the expression of eddy-current braking force. The results of finite-element simulation show that the analytic calculation is correct, and the feasibility of the ECBS to be used in the superhighspeed maglev is explored. The analytic calculation used for the parametric analysis of braking force is a good way of optimizing the superhighspeed ECBS. Compared with the simulation analysis, the analytic calculation can reflect the mechanism of eddy-current braking force and have the advantage of time-saving calculation.

Key words： Super high speed maglev eddy-current braking force subdomain method analytic calculation finite-element simulation parametric analysis

Received: 14 May 2019 Published: 12 May 2020

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TM153+.3

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	Zheng Xiaoqin
	Xu Jie
	Chen Chuntao
	Wu Xinzhen

Cite this article:

Zheng Xiaoqin,Xu Jie,Chen Chuntao等. Analytical Calculation of Braking Force of Super High Speed Maglev Eddy Current Device[J]. Transactions of China Electrotechnical Society, 2020, 35(9): 1891-1899.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.190568 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I9/1891

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