10 MHz模块化DOS超短纳秒脉冲电源研究  

Research on 10 MHz Modular DOS Ultra-short Nanosecond Pulse Generator

作　　者：程显[1,2] 王帅印 陈硕 吕彦鹏 CHENG Xian;WANG Shuaiyin;CHEN Shuo;LYU Yanpeng(School of Electrical and Information Engineering,Zhengzhou University,Zhengzhou 450001,China;He’nan Engineering Research Center of Power Transmission&Distribution Equipment and Electrical Insulation,Zhengzhou 450001,China)

机构地区：[1]郑州大学电气与信息工程学院,郑州450001 [2]河南省输配电装备与电气绝缘工程技术研究中心,郑州450001

出　　处：《高电压技术》2025年第2期967-977,共11页High Voltage Engineering

基　　金：国家高层次人才特殊支持计划(SO20220B06966);国家自然科学基金(51977195);河南省重大专项(221100240500)。

摘　　要：高频快前沿纳秒脉冲在电网设备检测、等离子体射流、材料优化改性等方面应用广泛。基于LC谐振升压和反向快速截断的二极管开断电路(diode opening switch,DOS)可在不同应用场景下产生超短纳秒脉冲,但谐振网络振荡持续时间制约其运行频率理论极值,且高频输出下剧增的电阻损耗严重影响电源安全稳定运行。为此开展模块化频率叠加高频超短纳秒DOS电源拓扑研究,建立考虑二极管寄生参数的DOS电路模型,明确高电压增益谐振网络参数配置,减小开关导通/关断电压、电流应力;设计模块化磁隔离级联电路,探明隔离电感参数最优区间,实现单级模块高幅值运行;提出多级模块化频率叠加控制策略,提升电路能量转化效率,突破传统DOS电路高频运行极值。实验结果表明,单级运行时,输出脉冲幅值高达1 860 V(变比增益为10.3),半高宽7.0 ns;在模块化运行下,能量转化效率提高320%,负载端脉冲波形重复频率高达10 MHz,实验结果与理论分析相符。High-frequency fast-front nanosecond pulse is widely used in grid equipment detection,plasma jet,material optimization and modification.Diode opening switch(DOS)based on LC resonant boost and reverse fast truncation can generate ultra-short nanosecond pulses in different application scenarios.The oscillation duration of the resonant network causes the theoretical extreme value of the maximum operating frequency.Meanwhile,the significantly increased re-sistance losses under high-frequency output seriously impair the safe operation of the power supply.In this paper,the topology of high-frequency ultra-short nanosecond DOS power supply with modular frequency superposition is studied.The DOS circuit model considering diode parasitic parameters is established,and the parameter configuration of high-voltage gain resonant network is defined to reduce the switch on/off voltage and current stress.The modular mag-netic isolation cascade circuit is designed to find out the optimal interval of the isolation inductance parameters and realize higher amplitude operation of the module.A multi-level modular frequency superposition control strategy is proposed to im-prove the energy conversion efficiency and break through the high-frequency operation extrema of DOS circuits.The experimental results show that the output pulse amplitude is 1860 V(variable ratio gain 10.3),and the FWHM is 7.0 ns.Un-der the modular operation,the energy conversion efficiency is increased by 320%,and the pulse waveform repetition frequency at the load end is 10 MHz.The experimental results are consistent with the theoretical analysis.

关 键 词：二极管开断电路 高增益 超短纳秒脉冲 MHz重复频率 能量效率 

分 类 号：TN86[电子电信—信息与通信工程]