电磁脉冲焊接用真空触发开关工作特性及影响因素  

Operational characteristics of and influencing factors on the triggered vacuum switch for electromagnetic pulse welding

作　　者：李成祥 陈丹 杜建 廖志刚 周言 Li Chengxiang;Chen Dan;Du Jian;Liao Zhigang;Zhou Yan(State Key Laboratory of Power Transmission Equipment Technology,School of Electrical Engineering,Chongqing University,Chongqing 400044,China;Yongchuan Power Supply Branch of State Grid Chongqing Electric Power Company,Chongqing 402160,China)

机构地区：[1]输变电装备技术全国重点实验室(重庆大学电气工程学院),重庆400044 [2]国网重庆市电力公司永川供电分公司,重庆402160

出　　处：《强激光与粒子束》2024年第11期11-18,共8页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(52207148);重庆市自然科学基金项目(CSTB2022NSCQ-MSX1238)。

摘　　要：电磁脉冲焊接是脉冲功率技术在材料加工中的应用之一,常采用真空触发开关(TVS)作为放电开关。根据电磁脉冲焊接过程特征,针对课题组所用的ZKTC国产新型TVS,详细探究了ZKTC在其触发阶段、导通阶段与初次放电阶段的工作特性。通过仿真研究了电路参数对ZKTC工作过程的影响;研制了Marx电路与脉冲变压器结合的触发装置,脉宽0~10μs可调、幅值0~20 kV可调,基于ZKTC搭建了放电能量为27 kJ的脉冲大电流发生器测试平台并开展实验分析。结果表明,触发信号的电压幅值与上升前沿均会显著影响ZKTC触发过程;放电主回路工作电压幅值会影响ZKTC导通阶段中带电粒子的定向迁移速率与放电电流幅值,改变开关放电回路的参数并加快电压下降速度,从而对导通阶段和放电阶段产生明显影响。Electromagnetic pulse welding(EMPW)is a key application of pulsed power technology in materials processing,where triggered vacuum switch(TVS)is frequently employed as discharge switch.Based on the specific behavior of the EMPW process,this paper presents a detailed investigation into the operational characteristics of a new domestically produced TVS,named ZKTC.The study focuses on the switch's behavior during the triggering,conducting,and initial discharging stages.The effects of circuit parameters on ZKTC’s operation were analyzed through simulations.A trigger device combining a Marx circuit and a pulse transformer was developed,featuring adjustable pulse widths(0–10μs)and adjustable voltage amplitudes(0–20 kV).Based on ZKTC,a high-current pulsed generator testing platform with a discharge energy of 27 kJ was constructed to perform experimental analyses.The results indicate that the voltage amplitude and rising edge of the trigger signal significantly influence the ZKTC triggering process.While the working voltage amplitude of the main discharge circuit impacting the directional migration rate of charged particles and the discharge current during the conducting stage,modifying the parameters of the switch discharge circuit and accelerating the voltage drop rate.This,in turn,has a significant effect on both the conducting and discharging stages.

关 键 词：真空触发开关 电磁脉冲焊接 导通特性 触发装置 

分 类 号：TM89[电气工程—高电压与绝缘技术]