Analysis of armature motional reverse electromotive forces in planar series enhanced railguns

摘要：

　　Since the series enhanced rail is added to the outside of main rail of plane-serial enhanced electromagnetic rail gun, the current flowing through enhanced rail will form a magnetic field in front of the armature as compared with single turn rail gun, so that the armature with high-speed motion produces a motional reverse electromotive force.Taking the double turn plane series ehanced electromagnetic railgun as an example, the armature is equivalent to rod conductor moving in magnetic field.The Biot-Savart Law, Gausss law and Faradays law are used to calculate the motional reverse electromotive force of armature.The relationship of raill structure parameters and current skin effect to the impact factor of the motional reverse electromotive force of armature is analyzed.The theoretical calculation shows that the increase of rail spacing D, main rail thickness h2 and current skin depth δ will result in the increase of the motional reverse electromotive force of armature E, and the increase of distance d between main rail and enhanced rail and the enhanced rail thickness h1 will result in the decrease of the motional reverse electromotive force of armature E.

关键词： Planar series enhancement Electromagnetic rail gun Armature Motional reverse electromotive force

作者: Bin CAO Xia GE Wei GUO Ke LI Ming-tao LI Peng-tao PEI Ju-xiang LI Yan-hui CHEN

作者单位: Northwest Institute of Mechanical and Electrical Engineering, Xianyang, China

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 113-116

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）