强激光与粒子束, 2018, 30 (8): 085004, 网络出版: 2018-08-21  

百纳秒近方波高压脉冲形成模块的设计与实验研究

High-voltage pulse forming module with hundreds-nanosecond quasi-squared output pulse
作者单位
1 中国工程物理研究院 应用电子学研究所, 高功率微波技术重点实验室, 四川 绵阳 621900
2 哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001
摘要
基于高功率脉冲功率系统小型化和模块化发展要求,研制了一种集储能和脉冲形成功能为一体的脉冲形成模块。通过发展非均匀脉冲形成技术,成功将传统脉冲形成网络的级数降至两级,并保持其输出波形为近方波,大幅降低了近方波脉冲形成模块的体积重量。模块内部电容采用串联分压结构以提高其耐电压值,采用折叠式薄膜电容以提高其储能密度,结合薄膜/变压器油混合绝缘方式,实现了紧凑化、耐高压设计。利用PSpice电路仿真,结合最坏情况模拟等方法,分析了模块内部电参数对其输出特性的影响,并进行了实验验证。模块耐电压值可达120 kV,单次储能密度高达41 kJ·m-3,可输出脉宽约180 ns的近方波高压脉冲。该模块将传统需要五级以上的脉冲形成网络的实际应用发展到两级,有利于实现多级高压方波Marx系统的紧凑化、模块化设计。
Abstract
A pulse forming module combining the function of energy storage and pulse shaping is designed to meet the challenge of minimization and modularization in high-power pulsed power system. The size and weight of the module have been reduced considerably due to the further development of the branches of pulse forming network to the lowest 2, while quasi-square output waveform characteristic is reserved. The module is constructed with a dozen folded film capacitors in series in a solid film-liquid transformer oil insulation system, aiming to prompt its energy storage density and thus the compact and high-voltage design. Influence of the circuit parameters on the output waveform characteristics of the module is studied by using PSpice electrical circuit simulation, and experimental test was carried out to verify it. The module shows high withstanding voltage of 120 kV with stored energy density of 41 kJ·m-3, and could output a 180 ns quasi-squared high voltage pulse.
参考文献

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李飞, 张恺烨, 朱明冬, 宋法伦, 金晓, 甘延青, 龚海涛. 百纳秒近方波高压脉冲形成模块的设计与实验研究[J]. 强激光与粒子束, 2018, 30(8): 085004. Li Fei, Zhang Kaiye, Zhu Mingdong, Song Falun, Jin Xiao, Gan Yanqing, Gong Haitao. High-voltage pulse forming module with hundreds-nanosecond quasi-squared output pulse[J]. High Power Laser and Particle Beams, 2018, 30(8): 085004.

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