Comparison on Discharge Characteristics of the Helium Plasma Jet Array Excited by Alternating Current and Nanosecond Pulse Voltage

被引：0
|
作者：
Zhang B. [1 ]
Wang L. [1 ]
Liu F. [1 ]
Wan M. [1 ]
Fang Z. [1 ]
机构：
[1] School of Electrical Engineering and Control Science, Nanjing Tech University, Nanjing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷 / 06期
关键词：
Discharge characteristics; High frequency AC; Jet array; Ns pulse; Plasma jet; Uniformity;
D O I：
10.19595/j.cnki.1000-6753.tces.180174
中图分类号：
学科分类号：
摘要：
To obtain the stable atmospheric pressure low-temperature plasma jet with large scale and good uniformity, a one-dimensional plasma jet array discharge in He was generated excited by alternating-current (AC) and nanosecond (ns) pulse voltage. Discharge characteristics and parameters of the jet arrays were compared, including the uniformity, instantaneous power, averaged power and intensities of optical emission spectrum. The hydrodynamic and electrical interactions among jets were analyzed by capturing the Schlieren images of gas channels and estimating the effect of Coulomb force among jets. The results show that the jet array excited by ns-pulse voltage can improve the downstream uniformity, increase plasma plume length, instantaneous power and intensity of optical emission spectrum, and reduce averaged power consumption. Different from the case in AC excitation, the jet array excited by ns pulse voltage has nearly no divergence in the lateral plumes. The ns pulse power source can also reduce the effects of gas heating and Coulomb repulsion force, thereby suppressing the hydrodynamic and electrical interaction among jets, which is the main reason for improving the uniformity of downstream plume. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
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页码：1319 / 1328
页数：9
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