高电压技术2025，Vol.51Issue(2)：967-977,11.DOI:10.13336/j.1003-6520.hve.20240475
10MHz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
摘要
Abstract
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 1 860 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Key words
diode opening switch/high gain/ultra-short nanosecond pulse/MHz repetition rate/energy efficiency引用本文复制引用
程显,王帅印,陈硕,吕彦鹏..10MHz模块化DOS超短纳秒脉冲电源研究[J].高电压技术,2025,51(2):967-977,11.基金项目
国家高层次人才特殊支持计划(SO20220B06966) （SO20220B06966）
国家自然科学基金(51977195) （51977195）
河南省重大专项(221100240500).Project supported by National Special Support Program for High-level Tal-ents(SO20220B06966),National Natural Science Foundation of China(51977195),Major Project of Henan Province(221100240500). （221100240500）
