太赫兹科学与电子信息学报, 2016, 14 (2): 224, 网络出版: 2016-12-07
一种紧凑型宽带高功率微波驱动源
A compact pulsed power driving source for wideband high power microwave radiation
宽带高功率微波 传输线开关振荡器 振荡天线 Tesla 变压器 wideband high power microwave transmission line switched oscillator resonant antenna Tesla transformer
摘要
为实现对传输线开关振荡器或振荡天线进行快速充电,以提高其耐压能力和产生高频振荡信号的能量效率,本文研制了一种基于Tesla 变压器的电容储能型脉冲驱动源。本文首先介绍该驱动源的工作原理和运行过程,接着利用等效电路方法分析了关键电路参数对负载充电过程的影响,然后介绍该驱动源的具体工程设计,最后介绍该驱动源初步测试结果以及将其应用于变压器油在10 ns 量级脉冲下击穿特性研究的实验情况。实验表明,输出火花开关在中储电容器充电电压为-191 kV 导通时,通过电感对等效电容为15 pF 的传输线充电电压峰值为-224 kV,电压上升时间约10 ns。研究结果表明本文研究的驱动源能够满足对传输线开关振荡器等电容负载进行快速充电至数百kV 高压的应用需求。
Abstract
A compact pulsed power driving source based on a Tesla transformer utilizing capacitive energy storage method is introduced. This pulsed power driving source has been designed for fast charging of transmission line switched oscillators or resonant antennas in order to improve their voltage capability and energy efficiency of generating high frequency oscillations. Firstly, the schematic and operation processes of the driving source are described. Then the influences of the key circuit parameters to the charging process of the load are analyzed by utilizing equivalent circuit method. And the engineering design of driving source has also been introduced. At last, the preliminary test results of the driving source and the experiment using this driving source to investigate the transformer oil breakdown characteristics under 10 ns pulse are introduced. It is shown that transmission line with an equivalent capacitance of about 15 pF is charged to a peak voltage of -224 kV within about 10 ns through a connecting inductor under the condition that the output spark gap switch closed when the intermediate capacitor is charged to -191 kV. It can be concluded that this pulsed power driving source satisfies the requirements for fast charging of capacitive loads such as transmission line switched oscillators to hundreds of kilo volts.
王俞卫, 陈冬群, 张建德, 吴川, 李达, 宋恒, 刘车波. 一种紧凑型宽带高功率微波驱动源[J]. 太赫兹科学与电子信息学报, 2016, 14(2): 224. WANG Yuwei, CHEN Dongqun, ZHANG Jiande, WU Chuan, LI Da, SONG Heng, LIU Chebo. A compact pulsed power driving source for wideband high power microwave radiation[J]. Journal of terahertz science and electronic information technology, 2016, 14(2): 224.