The Voltage-Current Scaling Relationship and Impedance of DC Electromagnetic Launchers

被引：15

作者：

Engel, Thomas G. ^{[1
]}

Veracka, Michael J. ^{[2
]}

机构：

[1] Univ Missouri, Dept Elect & Comp Engn, Columbia, MO 65211 USA

[2] US Naval Res Lab, Washington, DC 20375 USA

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2015年 / 43卷 / 05期

关键词：

Coilguns; electromagnetic launching; linear motors; railguns; RAILGUN; EFFICIENCY;

D O I：

10.1109/TPS.2015.2418053

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Electromagnetic launchers (EMLs) including railguns, helical guns, and coilguns have been proposed for numerous applications. However, the scaling characteristics of EMLs are unknown. This paper examines the nonlinear operating characteristics of EMLs and derives the operating voltage and current scaling relationships as determined by the mass and velocity of the projectile and the length of the launcher. The scaling relationship is derived using the kinetic power relationship common to all types of EMLs. The scaling relationship is expressed as a simple function of the projectile velocity, projectile mass, and launcher length. This paper also defines the impedance of an EML. The accuracy of the scaling relationship and the EML impedance are verified in a comparison with the experimental results of practical EMLs. The effects of resistive losses and inductive energy storage on the scaling relationship are included in the analysis.

引用

页码：1271 / 1276

页数：6

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