长脉冲强流二极管径向绝缘研究
Research of long pulse high current diode radial insulation
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摘要: 介绍了一种应用于长脉冲强流二极管的径向绝缘结构。简介了真空表面闪络机理，径向绝缘结构的设计思路。采用锥形绝缘结构，使用计算机模拟静电场分布优化设计了几何结构参数，在脉宽为200ns的脉冲源上进行了实验研究。二极管最高输出电压为750kV，平均绝缘子表面耐电场强度约50kV/cm，达到了设计要求。Abstract: A radial insulation structure which is used in long pulse high current diode is introduced in this paper. The theory of vacuum flashover and the idea of design are briefly introduced. In the research, coneshaped insulator was used. The geometry structure parameters were optimized by simulating the static electrical field distribution. Experiment was done on a pulse power source with 200ns pulse width. The maximum voltage 750kV was obtained, and the average standoff electrical field of insulator is about 50kV/cm.
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Key words:
- vacuum surface flashover /
- radial insulation /
- long pulse diode
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