快脉冲直线变压器初级放电单元开关电容一体化设计  

Assembly design of switch and capacitor for fast linear transformer driver primary discharge unit

作　　者：张天洋 黄涛[1] 丛培天[1] 罗维熙[1] 尹佳辉[1] 翟戎骁 Zhang Tianyang;Huang Tao;Cong Peitian;Luo Weixi;Yin Jiahui;Zhai Rongxiao(National Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi’an 710024,China)

机构地区：[1]强脉冲辐射环境模拟与效应全国重点实验室,西北核技术研究所,西安710024

出　　处：《强激光与粒子束》2024年第11期102-106,共5页High Power Laser and Particle Beams

摘　　要：开关电容器组成的初级放电支路是快脉冲直线变压器(FLTD)的基本单元,在输出电流幅值和前沿不变的前提下,降低单元回路电感可有效减少放电支路及气体开关的使用数量,从而提高FLTD的整体可靠性。因此,设法降低初级支路电感是FLTD关键技术。基于开关电容一体化技术研制了一台低电感FLTD初级放电单元,采用环形高压脉冲电容器作为能量储能元件,其工作电压100 kV,电容量39.6 nF,内电感8.8 nH。实验测试了初级放电单元的工作特性,结果表明:在±50 kV工作电压下,初级放电单元的短路电流幅值40 kA,前沿50 ns,回路电感为101 nH;在±80 kV工作电压下,初级放电单元对匹配负载的输出电流幅值为30 kA,前沿66 ns。The primary discharge circuit composed of switch and capacitors is the basic unit of fast linear transformer driver(FLTD).Under the condition that the amplitude and rise time of the output current are constant,the number of the units and the gas switches can be reduced effectively by reducing the inductance of the unit circuit,thus the overall reliability of FLTD can be improved.Therefore,reducing the inductance of the primary discharge circuit is always the key technology of FLTD.A low inductance FLTD primary discharge unit is developed based on switch and capacitor assembly technology in this paper.The unit uses ring-shaped high voltage pulse capacitor as energy storage element.Its operating voltage is 100 kV,capacity is 39.6 nF,and internal inductance is 8.8 nH.The working characteristics of the primary discharge unit are tested.The experimental results show that when the charging voltage of the capacitor is±50 kV,the short-circuit output current amplitude of the primary discharge unit is 40 kA,the rise time is 50 ns,and the loop inductance is 101 nH.When the charging voltage of the capacitor is±80 kV,the output current amplitude of the primary discharge unit to the matched load is 30 kA and the rise time is 66 ns.

关 键 词：快脉冲直线型变压器 开关电容一体化 初级放电支路 低电感 

分 类 号：TN78[电子电信—电路与系统]