Li Song, Gao Jingming, Shi Chengyu, Liu Xiao, Yang Hanwu
College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
Rev Sci Instrum. 2019 Dec 1;90(12):124704. doi: 10.1063/1.5124981.
A pulse transformer has advantages of compactness and long lifetime achievability, and is considered an important candidate for the development of high voltage pulse generators. In this paper, a fast rise time high voltage pulse transformer with a compact structure is studied numerically and experimentally. Specifically, the structure of the pulse transformer was designed with paralleled winding groups. The response and insulation characteristics of the pulse transformer are investigated numerically. After that, a fast rise time high voltage pulse transformer was built, and scaling experiments were performed to analyze the influence of the feed structure of the pulse transformer. Importantly, the pulse transformer was successfully used in a low impedance generator, and high voltage pulses with a peak voltage of about 260 kV, a pulse duration of 170 ns, and a rise time of 65 ns were achieved on a resistive load of 32 Ω. The ratio of the transformer is approximately 1:3. Experiments show reasonable agreement with the numerical analysis.
脉冲变压器具有结构紧凑和可实现长寿命的优点，被认为是高压脉冲发生器开发的重要候选方案。本文对一种结构紧凑、上升时间快的高压脉冲变压器进行了数值和实验研究。具体而言，脉冲变压器的结构采用并联绕组组进行设计。对脉冲变压器的响应和绝缘特性进行了数值研究。之后，制作了一台上升时间快的高压脉冲变压器，并进行了比例实验，以分析脉冲变压器馈电结构的影响。重要的是，该脉冲变压器成功应用于低阻抗发生器，在32Ω的电阻负载上实现了峰值电压约260kV、脉冲持续时间170ns、上升时间65ns的高压脉冲。变压器的变比约为1:3。实验结果与数值分析结果吻合良好。
