Analysis of energy conversion process in electromagnetic rail launcher

被引：0
|
作者：
Chen S. [1 ,2 ]
Wang J. [1 ,3 ]
Cheng W. [1 ,3 ]
Yan P. [1 ,3 ,4 ]
Xu W. [1 ,3 ]
机构：
[1] Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing
[2] Beijing Aeronautical Technology Research Center, Beijing
[3] Key Laboratory of Power Electronics and Power Drives, Chinese Academy of Sciences, Beijing
[4] University of Chinese Academy of Sciences, Beijing
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2024年 / 28卷 / 05期
关键词：
electromagnetic railgun; energy conversion; launch efficiency; motional impedance; rail inductance; rail resistance;
D O I：
10.15938/j.emc.2024.05.007
中图分类号：
学科分类号：
摘要：
To enhance the launch efficiency of the electromagnetic rail launcher, the energy conversion processes and rules were discussed, and a nonlinear arithmetic model was constructed for the rail launcher based on electronic load and electrodynamics. Comprising motional impedance, rail inductance, rail resistance and armature-rail contact resistance, the model contributes to the establishment of a simulation model coupled with structural force, speed and displacement. The characteristics of motional impedance, rail inductance and rail resistance were analyzed, and thereupon the energy transport process was revealed as composed of three phases, respectively being pulse power supply excitation, followed by joint excitation of pulse power supply and rail inductance, and finally main excitation of rail inductance. Through several field experiments, it is obtained that the specific process of energy conversion and the energy consumption ratios of various loads, with the energy consumption by rail resistance being the highest (52. 73%). By reducing simulation parameters such as track resistance, track resistance gradient and friction coefficient, the transmitter efficiency is improved from 27. 27% to 60. 87% . © 2024 Editorial Department of Electric Machines and Control. All rights reserved.
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页码：60 / 72
页数：12
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