初始电子生成方法对纳米秒脉冲分解特性的影响
Yongliang Wang1, Junna Li1, Ming Jiang2
1State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710024, People's Republic of China.
The Review of scientific instruments
|October 3, 2023
概括
最初的电子生成显著影响纳米秒脉冲分解. 不同的开关设计和初始电子度会影响放电通道的发展和时间延迟动,为各种操作条件提供量身定制的解决方案.
科学领域:
- 物理 物理学 物理
- 电气工程 电气工程
背景情况:
- 纳秒脉冲分解对于高压开关应用至关重要.
- 了解初始电子生成是控制分解特征的关键.
研究的目的:
- 分析初始电子生成方法对纳米秒脉冲分解的影响.
- 调查场增强因子和初始电子度对分解特性的影响.
主要方法:
- 使用3D粒子在细胞蒙特卡洛碰撞 (PIC-MCC) 模型进行数值模拟.
- 在不同脉冲电压下对三种开关类型进行实验测试 (40,70,120 ns的上升时间).
主要成果:
- 场增强因子和初始电子度显著影响放电通道的发展.
- 阴极槽开关显示较低的时间延迟动比低压半球开关.
- 开关的性能随着脉冲升高时间和压力而变化,以正极槽开关的性能优于预离子化开关,以更快的升高时间.
结论:
- 最初的电子生成方法极大地影响了纳米秒脉冲分解.
- 开关的设计和操作条件 (压力,脉冲上升时间) 决定了故障时间延迟动.
- 优化的开关可以减少动,适合各种操作要求.
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