基于晶闸管的大电流脉冲发生器研制  

Development of large current pulse generator based on thyristor

作　　者：邓珀昆 林楷宣 罗秋燕 龙井华[1] 王东[1] 雷云飞[1] 黄峻堃 王勇[1] 蔡厚智[1] 刘进元[1] Deng Pokun;Lin Kaixuan;Luo Qiuyan;Long Jinghua;Wang Dong;Lei Yunfei;Huang Junkun;Wang Yong;Cai Houzhi;Liu Jinyuan(Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China)

机构地区：[1]深圳大学物理与光电工程学院光电子器件与系统教育部/广东省重点实验室,广东深圳518061

出　　处：《强激光与粒子束》2021年第11期174-179,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(11775147);广东省自然科学基金项目(2019A1515011474,2019A1515110130);深圳市科技计划项目(JCYJ20200109105201936,JCYJ20190808115605501,JCYJ20180305125443569)。

摘　　要：采用串并联结合的Marx发生器结构,以晶闸管作为开关元件,设计了大电流脉冲发生器。通过导通回路电流分析了脉冲发生器的自触发原理,并模拟了输出脉冲电流激励磁透镜产生磁场的变化曲线。进行实物电路的研制,采用充电电容参数为600 V/2200μF,充电电压为550 V。在负载电阻为6Ω,负载电感为31.5 mH的条件下,获得输出电压峰值为−2.1 kV,半高宽为7.34 ms,脉冲前沿为450 ns;输出电流峰值为−225 A,半高宽为6.3 ms,脉冲前沿为4.11 ms。Applying series and parallel structure,a high current pulse generator was designed with thyristor.By analyzing the conducting current in circuit,the self triggering principle of the pulse generator is described.The variation of magnetic field in lens excited by output pulse current is simulated.The output characteristics of the circuit were measured.Using capacitors with parameters of 600 V/2200μF and DC voltage of 550 V,under load resistance of 6Ωand load inductance of 31.5 MH,a pulse with amplitude of−2.1 kV,FWHM of 7.34 ms,and pulse front of 450 ns was obtained.The pulse current is−225 A in amplitude,6.3 ms in FWHM,4.11 ms in pulse front.

关 键 词：MARX发生器 并联Marx 自触发 晶闸管 磁透镜 

分 类 号：TM89[电气工程—高电压与绝缘技术]