Modeling and Analysis of Time-Varying Inductance Gradient for Electromagnetic Rail Launcher

被引：0
|
作者：
Peng Z. [1 ]
Wang G. [1 ]
Zhai X. [1 ]
Zhang X. [1 ]
机构：
[1] National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering, Wuhan
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2020年 / 35卷 / 23期
关键词：
Analytical method; Electromagnetic rail launcher; Inductance gradient; Skin depth;
D O I：
10.19595/j.cnki.1000-6753.tces.191611
中图分类号：
学科分类号：
摘要：
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. © 2020, Electrical Technology Press Co. Ltd. All right reserved.
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页码：4843 / 4851
页数：8
相关论文
共 19 条
  • [1] Li Jun, Yan Ping, Yuan Weiqun, Electromagnetic gun technology and its development, High Voltage Engineering, 40, 4, pp. 1052-1064, (2014)
  • [2] Bao Xiaohua, Liu Jiwei, Sun Yue, Et al., Review and prospect of low-speed high-torque permanent magnet machines, Transactions of China Electrotechnical Society, 34, 6, pp. 1148-1160, (2019)
  • [3] (1995)
  • [4] Lu Yajun, Cheng Siwei, Wang Dong, Et al., The stator force calculation model for surface mounted permanent magnet motor under the action of armature magnetic field, Transactions of China Electrotechnical Society, 34, 15, pp. 3124-3135, (2019)
  • [5] Grover F W., Inductance calculations: working formulas and tables, (1962)
  • [6] Kerrisk J F., Current distribution and inductance calculations for rail-gun conductors, (1981)
  • [7] Keshtkar A, Bayati S., Derivation of a formula for inductance gradient using intelligent estimation method, IEEE Transactions on Magnetics, 45, 1, pp. 305-308, (2009)
  • [8] Deadrick F, Hawke R, Scudder J., MAGRAC-a electromagnetic rail launcher simulation program, IEEE Transactions on Magnetics, 18, 1, pp. 94-104, (2003)
  • [9] Ghassemi M, Barsi Y M, Hamedi M H., Analysis of force distribution acting upon the rails and the armature and prediction of velocity with time in an electromagnetic launcher with new method, IEEE Transactions on Magnetics, 43, 1, pp. 132-136, (2006)
  • [10] Yang Yudong, Wang Jianxin, Xue Wen, Simulation and analysis for dynamic load characteristic of electromagnetic rail-gun, Acta Armamentarii, 31, 8, pp. 1026-1031, (2010)
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