等离子体源参数对长导通等离子体断路开关性能的影响
Influence of the plasma source parameters on the performances of long-conduction-time plasma opening switch
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摘要: 研制了可工作在长导通时间（约1μs）的等离子体断路开关，实验研究了等离子体源参数，包括等离子体枪与主回路之间的触发延时、等离子体枪的工作电压以及等离子体枪的数目对开关性能的影响规律。研究结果表明，开关导通时间和开关电压随触发延时、枪工作电压和数目的增加而增加，但当开关导通时间接近主回路电流四分之一周期时，开关电压呈下降趋势。当Marx发生器工作电压为120kV且采用4个等离子体枪时，实验获得的最大电压倍增系数约为1.8。Abstract: A plasma erosion opening switch (PEOS) which works in long-conduction-time (about 1μs) has been developed. The influence of plasma source parameters including the time delay bwtween plasma gun and Marx generator, the working voltage and the number of plasma guns on the performances of PEOS has been investigated in experiments. As a result, the conduction time and the PEOS voltage increase with increasing Marx-plasma gun time delay, the working voltage and the number of plasma guns. Nevertheless, when the conduction time is close to the quarter period of the main electrical circuit, the PEOS voltage drops abruptly. With Marx voltage of 120kV and four plasma guns, the maximal voltage multiplication factor is about 1.8.
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Key words:
- plasma erosion opening switch /
- plasma gun /
- time delay /
- cenduction time
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