一种升压模式的可调极性高频Blumlein脉冲形成线功率调制模块

doi:10.19595/j.cnki.1000-6753.tces.191425

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摘要

随着脉冲功率技术在新型粒子加速器、生物细胞实验仪器等领域拓展应用,对脉冲功率发生器高重复频率、短脉冲、脉冲参数灵活可调提出更高的要求。该文研究了一种新型的功率变换模块电路拓扑。这种电路拓扑由LC振荡升压单元和Blumlein形成线单元组成,利用多开关时序逻辑控制实现对输出波形参数的调整,相对于传统Blumlein线在保留其短脉冲成形优点的同时,能获得输出脉冲频率数倍于开关频率,输出电压幅值数倍于直流充电电压,输出脉冲的极性及间隔时间的灵活调整。同时,通过动态电路的时域分析和传输线波过程分析阐述该电路的工作原理,并通过电路仿真加以验证。此外,采用射频MOSFET开关和同轴电缆搭建一台原理样机,在负载匹配时,实现了在开关频率500kHz时输出脉冲频率1MHz、输出脉冲电压幅值4倍于直流电源电压20ns的短脉冲。

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	何映江
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	姚陈果

关键词 ：纳秒脉冲发生器, LC振荡电路, Blumlein脉冲形成线, 半导体开关

Abstract：

With the development of pulse power technology in new particle accelerators, biological cell experimental instruments and other fields, higher requirements are put forward for pulse power generators with high repetition frequency, short pulse and flexible adjustment of pulse parameters. This paper studies a new power conversion module circuit topology composed of an LC oscillating boost unit and a Blumlein line unit. The multi-switch timing logic is used to adjust the output waveform parameters. Compared with the traditional Blumlein line, it can obtain output pulse frequency several times the switching frequency while retaining the advantages of short pulse forming. In addition, the output voltage amplitude is several times the DC source voltage, and the polarity and interval time of the output pulse are flexibly adjusted. At the same time, the working principle of the circuit is explained by the time domain analysis of the dynamic circuit and the analysis of the transmission line wave process, and is verified by circuit simulation. Moreover, a principle prototype is built using RF MOSFET switch and coaxial cable. When the load is matched, the output pulse frequency is 1MHz at the switching frequency of 500kHz, and the output pulse voltage amplitude is 4 times the DC supply voltage with 20ns pulse width.

Key words： Nanosecond pulse generator LC oscillation circuit Blumlein pulse forming line semiconductor switch

收稿日期: 2019-11-02

PACS:

TM832

基金资助:

国家自然科学基金（51907011）、重庆市基金（cstc2019jcyj-msxm0368）和中央高校基本科研业务费（2019CDXYDQ0010）资助项目

通讯作者: 余亮男,1986年生,讲师,硕士生导师,研究方向为脉冲功率技术及其应用、大功率半导体器件应用。E-mail: yu_liang@cqu.edu.cn

作者简介: 何映江男,1995年生,硕士研究生,研究方向为脉冲功率技术及其应用。E-mail: heyingjiang@cqu.edu.cn

引用本文:

何映江, 余亮, 马剑豪, 董守龙, 姚陈果. 一种升压模式的可调极性高频Blumlein脉冲形成线功率调制模块[J]. 电工技术学报, 2021, 36(2): 425-434. He Yingjiang, Yu Liang, Ma Jianhao, Dong Shoulong, Yao Chenguo. An Adjustable Polarity High Frequency Blumlein Pulse Forming Line Power Modulation Module with Boost Mode. Transactions of China Electrotechnical Society, 2021, 36(2): 425-434.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.191425 https://dgjsxb.ces-transaction.com/CN/Y2021/V36/I2/425

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