现代应用物理2025，Vol.16Issue(3)：69-75,7.DOI:10.12061/j.issn.2095-6223.202410009
HEMP等效电流注入下氧化锌压敏电阻响应特性实验
Response Characteristics of Metal-Oxide-Varistor to HEMP Pulse Current Injection
摘要
Abstract
High-altitude electromagnetic pulse(HEMP)could induce very fast overvoltage pulse(VFTO)with nanosecond rise time on transmission line which may hardly damage electrical devices connected to the line.Metal-oxide-varistor(MOV)has been used widely in the protection against lightning overvoltage since its fast response time and high surge current capability.Compared with lightning pulse with microsecond level,MOV may not act immediately under HEMP pulse since its rise time is much faster than lighting.In this paper,a tightly testing loop consisting of pulse source,crimping measurement and digital oscilloscope is designed.Then,the non-inductance and inductance testing circuit are used to study the response of MOV with different material parameters under different voltage-levels pulse current injection.The experimental result shows that there is overshoot voltage in the pulse current injection of MOV.With the increasing of source voltage,the overshoot voltage also increases linearly.Meanwhile,the risetime of overshoot voltage is 3 ns and 16 ns under inductance and non-inductance testing circuit,respectively.It is obvious that the protective ability of MOV does depend on not only the material and manufacturing process of MOV but also the pin of MOV and the stray parameters in the working circuits.关键词
HEMP/氧化锌压敏电阻/响应特性/过冲电压/无感测试/有感测试Key words
HEMP/metal-oxide-varistor(MOV)/response characteristic/overshoot voltage/non-inductance testing circuit/inductance testing circuit分类
数理科学引用本文复制引用
刘政,崔志同,董亚运,毛从光,聂鑫,吴伟..HEMP等效电流注入下氧化锌压敏电阻响应特性实验[J].现代应用物理,2025,16(3):69-75,7.基金项目
强脉冲辐射环境模拟与效应全国重点实验室基金资助项目(SKLIPR1904Z) （SKLIPR1904Z）
国防基础科研计划资助项目(JSKY2019207A029) （JSKY2019207A029）
