A calculation model for breakdown time delay and jitter of gas switches under hundred-nanosecond pulses and its application in a self-triggered pre-ionized switch  

作　　者：Tianchi WANG Haiyang WANG Wei CHEN Yingchao DU Linshen XIE Tao HUANG Zhiqiang CHEN Junna LI Fan GUO Gang WU 王天驰;王海洋;陈伟;杜应超;谢霖燊;黄涛;陈志强;李俊娜;郭帆;吴刚(Key Laboratory of Particle&Radiation Imaging(Tsinghua University),Ministry of Education,Beijing 100084,People's Republic of China;Department of Engineering Physics,Tsinghua University,Beijing 100084,People's Republic of China;State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Xi’an 710024,People's Republic of China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi'an 710049,People's Republic of China)

机构地区：[1]Key Laboratory of Particle&Radiation Imaging(Tsinghua University),Ministry of Education,Beijing 100084,People's Republic of China [2]Department of Engineering Physics,Tsinghua University,Beijing 100084,People's Republic of China [3]State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Xi’an 710024,People's Republic of China [4]State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi'an 710049,People's Republic of China

出　　处：《Plasma Science and Technology》2021年第11期152-166,共15页等离子体科学和技术（英文版）

摘　　要：In this paper, a calculation model for the breakdown time delay and jitter of gas switches under hundred-nanosecond pulses is proposed and applied in a self-triggered pre-ionized switch. The effects of injection time of pre-ionization, pulse rise time, and the pre-ionization jitter are discussed and verified through experiments. It indicates that the pre-ionization should be injected when the electric field is high enough in the gap, injection after 80% peak-time can ensure its effectiveness.Then the statistical time delay jitter will be determined by the pre-ionization jitter, which is an intrinsic restriction of the self-triggered switch. However, when the changing rate of the pulsed electric field exceeds a certain value, the breakdown time delay jitter can be partly offset in the formative stage because the formative time delay has an exponential relationship with the electric field. Therefore, lower time jitter can be obtained under pulses with a shorter pulse rise time. In general, the results of the calculation model agree with the experimental results, and the experimental parameters which lead to a low jitter can also be used as a reference.

关 键 词：gas switch nanosecond pulse breakdown time delay JITTER distribution model 

分 类 号：TM564[电气工程—电器]