利用过阻尼电路合成高压方波脉冲  

Using over-damped electric circuits to synthesize high voltage rectangular pulse

作　　者：赵越[1,2] 蒋吉昊 周良骥[1] 陈林[1] 王勐[1] 李逢[1] 康军军[1] 王治[1] ZHAO Yue;JIANG Jihao;ZHOU Liangji;CHEN Lin;WANG Meng;LI Feng;KANG Junjun;WANG Zhi(Key Laboratory of Pulsed Power,Institute of Fluid Physics,China Academy of Engineering Physics,Mianyang 621999,China;School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国工程物理研究院流体物理研究所脉冲功率科学与技术重点实验室,四川绵阳621999 [2]中国科学技术大学物理学院,安徽合肥230026

出　　处：《国防科技大学学报》2019年第6期156-160,共5页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(11605181)

摘　　要：在过阻尼RLC电路分时放电的基础上,提出新型高压方波脉冲产生方法。理论分析表明:过阻尼RLC电路产生的双指数电压波与脉冲形成线产生的方形电压波具有类似的上升沿和平顶。电路模拟表明:通过人工过零技术可以对双指数电压波进行截尾,从而形成完整的高压方波脉冲。建立了原理验证性样机,由两组RLC电路构成,每组电路包含一台脉冲电容器和一只三电极场畸变气体开关,两组电路共用一个上升沿调节电感。实验证明:样机可以在电阻负载上输出幅值为17 kV、平顶宽度为330 ns^5.8μs、上升沿为100~350 ns的单极性高压方波脉冲。该方法适应性强,对负载变化不敏感,同时具有良好的可调节性,方波上升沿、平顶宽度连续独立可调。Based on over-damped RLC nonsynchronous discharge circuits, a novel high voltage rectangular waveform forming method was proposed. The theoretical analysis showed that the double exponential waveform approaches the rising edge and the flattop of rectangular waveform in a particular situation. Meanwhile the numerical simulation showed the tail of double exponential waveform can be cut off by the artificial current zero. A prototype was designed and tested. The results showed that the prototype can output an adjustable unipolar rectangular pulse with 17 kV amplitude, 330 ns ~ 5.8 μs flattop duration and 110 ~ 350 ns rising time on insulation specimen. The rising time, the positive flattop duration and the negative one of rectangular pulse are adjustable independently. The waveform is not sensitive to specimen variety.

关 键 词：可调节性 高压方波脉冲 RLC电路 过阻尼 人工过零 绝缘实验 

分 类 号：TM853[电气工程—高电压与绝缘技术]