层叠Blumlein线多开关导通时间分散性  

Dispersity of closure time of multiple switches on stacked Blumleins

作　　者：王松松[1] 舒挺[1] 杨汉武[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,长沙410073

出　　处：《强激光与粒子束》2012年第8期1995-1999,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(11075209);湖南省高校科技创新团队基金项目

摘　　要：高介电常数陶瓷储能脉冲形成线需要用到多开关触发的层叠Blumlein线结构。从形成线波过程理论出发,分析了多开关导通时间分散性对层叠Blumlein线及其输出波形的影响。主要包括两方面影响:其一是造成输出方波脉冲的前沿和后沿均出现阶梯形畸变;其二是使得各延迟导通的平行平板Blumlein线承受过电压,容易引起陶瓷储能介质的电击穿。在不单独考虑开关电感的理想情况下,利用PSpice电路程序模拟了开关导通时间分散性对四级层叠Blumlein线的影响,模拟结果与波过程理论分析一致。为减弱这些影响,提出了可行的解决方案。The pulse forming line based on high dielectric constant ceramic dielectrics requires stacked Blumleins configuration with multi-switch triggering.Through the theory of pulse forming process,the effect of multiple switches＇ dispersity of closure time on stacked Blumleins is analyzed,which contains two aspects： one is causing ladder distortions within rise and fall edges of the output rectangle pulse,the other is leading to over-voltage loaded on the parallel plate Blumleins triggered by the delayed closing switches,easily resulting in electric insulation failure for the ceramic dielectrics.A PSpice circuit program is utilized to simulate the effect on 4-stage stacked Blumleins,and the simulation results are in good agreement with analysis through the theory of pulse forming process.Practical solutions to the problem caused by the effect are presented.

关 键 词：层叠Blumlein线 多开关 导通时间分散性 陶瓷介质 

分 类 号：TL51[核科学技术—核技术及应用]