Pang Lei, Zhang Qiaogen, Ren Baozhong, He Kun
State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, 710049, China.
Rev Sci Instrum. 2011 Apr;82(4):043504. doi: 10.1063/1.3572265.
Uniform and stable discharge plasma requires very short duration pulses with fast rise times. A repetitive high-voltage nanosecond pulse generator for the application of gas discharge is presented in this paper. It is constructed with all solid-state components. Two-stage magnetic compression is used to generate a short duration pulse. Unlike in some reported studies, common commercial fast recovery diodes instead of a semiconductor opening switch (SOS) are used in our experiment that plays the role of SOS. The SOS-like effects of four different kinds of diodes are studied experimentally to optimize the output performance. It is found that the output pulse voltage is higher with a shorter reverse recovery time, and the rise time of pulse becomes faster when the falling time of reverse recovery current is shorter. The SOS-like effect of the diodes can be adjusted by changing the external circuit parameters. Through optimization the pulse generator can provide a pulsed voltage of 40 kV with a 40 ns duration, 10 ns rise time, and pulse repetition frequency of up to 5 kHz. Diffuse plasma can be formed in air at standard atmospheric pressure using the developed pulse generator. With a light weight and small packaging the pulse generator is suitable for gas discharge application.
均匀且稳定的放电等离子体需要具有快速上升时间的极短持续时间脉冲。本文介绍了一种用于气体放电应用的重复高压纳秒脉冲发生器。它由全固态组件构成。采用两级磁压缩来产生短持续时间脉冲。与一些已报道的研究不同，在我们的实验中使用普通商用快速恢复二极管而非半导体断路开关（SOS）来发挥SOS的作用。对四种不同类型二极管的类SOS效应进行了实验研究以优化输出性能。发现反向恢复时间越短，输出脉冲电压越高，并且当反向恢复电流的下降时间越短时，脉冲的上升时间变得越快。二极管的类SOS效应可通过改变外部电路参数来调节。通过优化，该脉冲发生器可提供40 kV的脉冲电压，持续时间为40 ns，上升时间为10 ns，脉冲重复频率高达5 kHz。使用所研制的脉冲发生器可在标准大气压下的空气中形成扩散等离子体。该脉冲发生器重量轻、封装小，适用于气体放电应用。
