Excitation of atmospheric pressure uniform dielectric barrier discharge using repetitive unipolar nanosecond-pulse generator
Excitation of atmospheric pressure uniform dielectric barrier discharge using repetitive unipolar nanosecond-pulse generator
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DOI：
10.1109/tdei.2010.5658235
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发表时间：
2010-12
影响因子：
3.1
通讯作者：
T. Shao;Yang Yu;Cheng Zhang;Dongdong Zhang;Zheng Niu;Jue Wang;P. Yan;Yuanxiang Zhou
中科院分区：
文献类型：
--
作者：
T. Shao;Yang Yu;Cheng Zhang;Dongdong Zhang;Zheng Niu;Jue Wang;P. Yan;Yuanxiang Zhou
单极高压脉冲激励介质阻挡放电(DBD)是一种在大气压下产生非热等离子体的很有前途的方法。在本研究中，磁压缩式固态脉冲功率发生器被用来产生重复的纳秒脉冲用于激励。DBD是使用两个液体电极创建的。给出了不同实验条件下的放电电压和电流的电学特性。纳秒脉冲放电电流约为数十安培。这与高压交流电源激励的普通DBD电流不同。与单极脉冲励磁的两个电流脉冲对应两个放电的特性相比，由于脉冲功率和放电结构的原因，本研究中的二次放电较小。在实验条件下，从液体电极的正面和侧面的发光显示，没有观察到细丝，整个放电区的放电是均匀的和扩散的。研究了外加电压幅值、重复频率和气隙间距对放电特性的影响。放电模式不随研究参数的变化而变化。并对高压交流励磁和纳秒脉冲励磁进行了比较。此外，还对实验结果进行了讨论。
Dielectric barrier discharge (DBD) excitation by unipolar high voltage pulses is a promising approach for producing non-thermal plasma at atmospheric pressure. In this study, a magnetic compression solid-state pulsed power generator was used to produce repetitive nanosecond pulses for the excitation. The DBD is created using two liquid electrodes. The electrical characteristics of the discharge voltage and current are illustrated under different experimental conditions. The nanosecond-pulse discharge current is of the order of tens of amperes. This differs from common DBD current excitated by high-voltage ac sources. Compared with the characteristics of two current pulses corresponding to two discharges for unipolar pulsed-excitation, the secondary discharge in this study is minor owing to the pulsed power and discharge configuration. Under the experimental conditions, the luminous emissions from the front and side views of the liquid electrodes show that no filament is observed and the discharge is homogeneous and diffuse in the whole discharge region. The effects of applied voltage amplitude, repetition rate, and air gap spacing on the discharge characteristic are investigated. The discharge mode does not change with the variation of the investigated parameters. A comparison of high voltage ac and nanosecond-pulse excitation is also presented. In addition, discussion of the experimental results is presented.