摘要
从微电流的角度分析激光触发真空开关(laser triggered vacuum switch,LTVS)的触发特性。通过设计微电流测试电路,在开关两端施加一定的电压,施加电压值不能使开关导通,这样可以更好的分析开关导通前,开关内部初始等离子体的发展情况。通过实验发现,在双脉冲激光作用下,平面型LTVS的微电流随着施加电压的增加而增加,连续两次脉冲激光照射平面型LTVS的目标材料,产生更多的初始等离子体。结果表明,双脉冲激光的触发模式,有利于降低开关导通所需的触发能量,微电流的产生是ns级,使得开关可以高速稳定的导通,从而有利于开关整体装置的小型化与实用化设计。
The triggering characteristics of LTVS （laser triggered vacuum switch, LTVS）were analyzed in the view of micro-current. A micro-current test circuit was designed, and a constant voltage, which is unable to turn on the switch, was applied on the switch to analyze the development of initial plasma within the switch before it turned on. The experiment revealed that under the effect of dual-pulse laser, the micro-current of flat-type LTVS increased with the increase in the applied voltage, and continuous twice irradiation of pulsed laser on the target material of the flat-type LTVS produced more initial plasma, so that the conduction time delay and jitter time delay of the switch reached nanosecond level. The result shows the dual-pulse laser trigger mode is beneficial to reduction of the triggering energy required for conduction of the switch, and the mode also contributes to the miniaturization of the overall switch device and its practical design.
作者
黄祖成
向彬
曹祥薇
宗云
张予
毛晓坡
HUANG Zucheng XIANG Bin CAO Xiangwei ZONG Yun ZHANG Yu MAO Xiaopo(State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074 China Guangzhou Zhiguang Electric Co., Ltd., Guangzhou 510000 China Electric Power Research Institute, State Grid Hubei Electric Power Corporation, Wuhan 430077, China Huanghelou New Materials Science Technology Development Co., Ltd., Wuhan 430040 China Communication Engineering Department, Shijiazhuang Information Engineering Vocational College, Shijiazhuang 050035, China)
出处
《高压电器》
CAS
CSCD
北大核心
2017年第3期47-50,共4页
High Voltage Apparatus
基金
国家自然科学基金项目(51377071)
中央高校基本科研业务费资助项目(HUST:2010JC018)~~
