Design and Characteristics of a High Current Two-Electrode Graphite Gas Switch for the ICF Power System

被引：2

作者：

Chen, Li ^{[1
]}

Yang, Lanjun ^{[1
]}

Huang, Yizhi ^{[1
]}

Liu, Zhan ^{[1
]}

Wang, PengCheng ^{[1
]}

Xiao, Lei ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

来源：

JOURNAL OF FUSION ENERGY | 2015年 / 34卷 / 06期

关键词：

Two-electrode gas switch; Magnetic switch; Marx generator; Erosion; Graphite;

D O I：

10.1007/s10894-015-9958-8

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

In this paper, a two-electrode graphite gas switch was developed as the main discharge switch for the high-power laser system. A compact Marx generator designed to generate a 20 ns rise-time and -80 kV peak voltage to trigger the main discharge switch. A magnetic switch was designed to block the triggering pulse from the flashlamp load and permit the main discharge current to flow from the capacitor bank to the flashlamp load. The characteristics of the gas switch were measured under a 1.0-MJ capacitive pulsed power module for over 3300 discharge experiments with a total charge transfer 230 kC. The self-breakdown voltage and the surface characteristics of the electrodes indicated that the erosion of the gas switch was uniform. The lifetime was directly dependent on the electrode erosion rate. The gas switch can go on acting at a full current after the graphite electrodes were replaced.

引用

页码：1278 / 1283

页数：6

共 16 条

[1]

Bhasavanich D., 2001, 1991 IEEE PULS POW C, P343

[2]

Bruce F.M., 1947, J I ELECT ENG, V94, P138

[3] ELECTRODE EROSION IN HIGH-CURRENT, HIGH-ENERGY TRANSIENT ARCS [J].