多级同步感应线圈发射器电枢内部强磁场屏蔽与优化  

Shield of Armature of Multi-Stage Synchronous Induction Coil Launcher Internal High Magnetic Field and Optimization

作　　者：管少华[1] 关晓存[1] 郭灯华[1] 王帅 Guan Shaohua;Guan Xiaocun;Guo Denghua;Wang Shuai(National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering,Wuhan 430033 China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《电工技术学报》2020年第S02期333-340,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51777212)。

摘　　要：该文解决了多级同步感应线圈发射器电枢内部的强磁场分布以及屏蔽优化问题。首先,分析在发射过程中电枢内部无屏蔽时的磁感应强度分布和电磁性能;然后,对屏蔽体采用单层导磁和导电材料以及三层组合的方式在不同厚度时的屏蔽效能和电磁性能作了对比;最后,对组合屏蔽方案在不同位置以及不同厚度时进行优化。仿真结果表明,磁感应强度较高时,单层导电材料的屏蔽效能要优于导磁材料,磁感应强度较低时相反;组合屏蔽方案时,在电枢的前部由于磁感应强度低而使屏蔽效果较优。该文提出优化方案:屏蔽体的位置位于电枢前部,组合方案为0.5mm铜、0.5mm铜以及2mm低碳钢Steel_1008,屏蔽前后磁感应强度分别为0.3303T和0.155 2T,屏蔽效能为6.560dB。The problem to be solved in this paper is the internal magnetic field distribution of armature of multi-stage synchronous induction coil launcher(SICL)and shielding optimization.Firstly,this paper analyzes magnetic induction intensity distribution and electromagnetic performance when armature is not shielded during launching.The shielding effectiveness of shielding body and electromagnetic performance under different thicknesses were respectively compared using a single layer of conductive and magnetic material and combination of three-layers.Finally,the combined shielding scheme was optimized at different locations and thicknesses.Simulation results show that the shielding effectiveness of single-layer conductive materials is better than permeability magnetic materials under strong magnetic induction intensity,it opposites when under weak magnetic induction intensity.The shielding effectiveness is better when shield body is located at in front of armature.Finally,the optimization scheme that using combination of 0.5mm copper,0.5mm copper,2mm steel 1008 and location of shield is in front of armature is proposed.Magnetic induction intensities before and after shielding are 0.3303T and 0.1552T,the shielding effectiveness is 6.560dB.

关 键 词：同步感应线圈发射器 脉冲强磁场 磁感应强度 屏蔽效能 

分 类 号：TM153[电气工程—电工理论与新技术]