| 40路可扩展高压脉冲触发器 |
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| 引用本文： | 周良骥,何安,丁瑜,陈林,王勐,赵越.40路可扩展高压脉冲触发器[J].强激光与粒子束,2018,30(9):095006-1-095006-5. |
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| 作者姓名： | 周良骥 何安 丁瑜 陈林 王勐 赵越 |
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| 作者单位： | 1.中国工程物理研究院 流体物理研究所, 四川 绵阳 621900 |
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| 摘 要： | 直线变压驱动源(LTD)代表一种新型电路拓扑结构，将储能电容分解为容量很小的单元，能够直接输出快脉冲，而且降低了基本器件所承受的电压和导通的能量，为重频长寿命的大型驱动器研制开辟了道路，因而成为下一代大型Z箍缩聚变能源驱动器的主流技术。LTD的设计思想是一种矛盾转移，将难点从极高电压极高电流的闭合开关转移到大阵列开关的同步触发，因此，触发技术成为研制大型LTD型驱动器的重点。提出了一种可扩展的触发技术，以小型Marx发生器作为初级储能源，利用水介质脉冲形成线作为脉冲形成单元，激光触发气体开关作为输出开关，通过高压电缆匹配输出高压脉冲。给出了输出40路高压脉冲的触发器单元的设计和初步实验结果，Marx充电±60 kV时，触发器单元在75 Ω匹配电阻负载输出电压峰值为106 kV，上升时间约27 ns(10%~90%)，半高宽约110 ns。作为输出开关的四个激光触发气体开关在~70%工作系数、激光总能量55 mJ的条件下，导通时间差异小于3 ns。
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| 关 键 词： | 直线变压驱动源 触发系统 可扩展触发器 激光触发开关 |
| 收稿时间： | 2017-11-09 |
Extendable high voltage trigger unit with 40 output cables |
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| Affiliation: | 1.Institute of Fluid Physics, CAEP, P. O. Box 919-108, Mianyang 621900, China2.Key Laboratory of Pulsed Power, CAEP, P. O. Box 919-108, Mianyang 621900, China |
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| Abstract: | Linear transformer driver (LTD) is a new pulsed power technology with novel topology. It can generate fast high power pulse by dividing energy storage capacitor into many small ones, and gain high voltage by induction addition. One of the key characters and technique difficulties of LTD is the trigger theme. This paper introduces the concept of extendable trigger technology. An extendable trigger unit with 40 output cables was designed and tested. When the Marx was charged by ±60 kV, the trigger unit with a 75 Ω load output a peak voltage of 106 kV, and the risetime was 27 ns (10%~90%), FWHM was 110 ns. The trigger time difference of the four laser-triggered gas switches (as the output switches) was less than 3 ns under the conditions of about 70% working coefficient and total laser energy of 55 mJ. |
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