电触发真空沿面闪络开关工作特性  

Operating characteristics of electrically triggered vacuum surface flashover switch

作　　者：富英杰 董洛康 秦沈熠 何孟兵[1] 叶明天 王真[2] 李正宏[2] Fu Yingjie;Dong Luokang;Qin Shenyi;He Mengbing;Ye Mingtian;Wang Zhen;Li Zhenghong(State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science and Technology,Wuhan,430074,China;Institute of Nuclear Physics and Chemistry,CAEP,Mianyang 621900,China)

机构地区：[1]华中科技大学强电磁工程与新技术国家重点实验室,武汉430000 [2]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2024年第11期19-24,共6页High Power Laser and Particle Beams

摘　　要：电触发真空沿面闪络开关(VSFS)具有高导通速度、高绝缘恢复速度、体积小、结构简单等优点,适合于高电压、高功率转换的场合。导通速度和稳定性是VSFS输出性能的重要指标,其影响因素的研究决定了VSFS的优化方向。研究了结构、材料、触发极性对真空沿面闪络开关的输出性能影响。结果表明,体式结构相较于片式结构导通速度更快、更稳定。钛酸钡介质和氮化铝介质具有稳定的脉冲击穿电压,适合作为触发介质。石英的直流耐压高,适合作为主间隙介质。正触发方式下开关的输出指标要优于负触发。Electrically triggered vacuum surface flashover switch(VSFS)has the advantages of high conduction speed,high insulation recovery speed,small size and simple structure,which make them suitable for high voltage and high power conversion.Conduction speed and stability are important indicators of VSFS output performance,and the study of their influencing factors determines the optimization direction of VSFS.In this paper,the effects of structure,material,and trigger polarity on the output performance of vacuum surface flashover switch are investigated.The results show that the bulk structure has faster and more stable conduction speed compared with the chip structure.Barium titanate dielectric and aluminum nitride dielectric have stable pulse breakdown voltage and are suitable as trigger dielectric.Quartz has a high DC withstand voltage and is suitable for the main gap medium.The output index of the switch in positive triggering mode is better than in negative triggering.

关 键 词：电触发真空沿面闪络开关 电极结构 介质材料 延迟时间 导通时间 

分 类 号：TM89[电气工程—高电压与绝缘技术]