基于Marx和磁开关的方波脉冲电源的研制北大核心CSCD |
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引用本文: | 饶俊峰,姜松,李孜. 基于Marx和磁开关的方波脉冲电源的研制北大核心CSCD[J]. 强激光与粒子束, 2016, 28(5): 055005-134. DOI: 10.11884/HPLPB201628.055005 |
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作者姓名: | 饶俊峰 姜松 李孜 |
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作者单位: | 1.上海理工大学 光电信息与计算机工程学院, 上海 200093 |
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基金项目: | 上海市自然科学基金项目(15YF1408300;13ZR1428100);沪江基金项目 |
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摘 要: | 设计了一种全固态高压重频方波脉冲发生器,主要由Marx发生器、脉冲形成线和磁开关构成。Marx发生器通过电感对脉冲形成线进行充电,将其充电至所需电压水平;当脉冲形成线充电至峰值电压时,磁开关饱和;脉冲形成线通过饱和的磁开关对匹配负载进行放电,在负载上形成一个高压方波脉冲。串入电感与磁开关相互匹配,不仅直接影响放电过程,同时也决定着磁开关需承受的伏秒数和负载上的预脉冲大小。介绍了Marx发生器和磁开关的设计,在单次和5kHz重复频率下分别进行实验。在50Ω的匹配电阻负载上,获得电压幅值为12.5kV、电流幅值为250A、上升时间为46ns、脉宽为220ns的方波脉冲。对放电过程进行了PSPICE仿真模拟,仿真结果与实验结果匹配良好。
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关 键 词: | 全固态 Marx发生器 磁开关 方波脉冲 脉冲电源 |
收稿时间: | 2015-09-29 |
Rectangular pulse generator based on Marx and magnetic switch |
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Affiliation: | 1.School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China |
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Abstract: | An all solid-state high-voltage rectangular pulse generator is proposed. This generator consists of a Marx generator, a pulse forming line (PFL) and a magnetic switch (MS). As a power supply, the Marx generator discharges to the PFL through an inductor. The inductor should cooperate with MS since it influences the discharging process directly and determines the volt-second product of the MS and the pre-pulse over the load. The MS saturates at exactly the moment the discharging process ends. PFL discharges to the matched resistor load through the saturated MS and a high voltage rectangular pulse is obtained over the load. The designs of the Marx generator and the MS are introduced in this paper. Experiments under a single shot and repetitive frequency of 5 kHz are carried out. PSpice simulations with a simplified model of MS are carried out to verify the experimental results. The experimental result matches well with the simulation results. A rectangular pulse with 12.5 kV voltage amplitude, 250 A current amplitude, 46-ns rise-time, 220 ns pulse-width is obtained over the 50 resistor load. |
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