电工技术学报  2017, Vol. 32 Issue (2): 33-42    DOI:
放电等离子体及应用专题Ⅱ |
不同电极间距下纳秒脉冲表面介质阻挡放电分布特性
姜慧1, 邵涛2, 3, 章程2, 3, 严萍2, 3
1. 输配电装备及系统安全与新技术国有重点实验室(重庆大学电气工程学院) 重庆 400044;
2. 中国科学院电工研究所 北京 100190;
3. 中国科学院电力电子与电气驱动重点实验室 北京 100190
Distribution Characteristics of Nanosecond-Pulsed Surface Dielectric Barrier Discharge at Different Electrode Gaps
Jiang Hui1, Shao Tao2, 3, Zhang Cheng2, 3, Yan Ping2, 3
1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology School of Electrical Engineering Chongqing University Chongqing 400044 China;
2. Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China;
3. Key Laboratory of Power Electronics and Electric Drive Chinese Academy of Sciences Beijing 100190 China
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摘要 电极间距是表面介质阻挡放电(SDBD)的一个重要结构参数。通过实验研究和仿真计算,研究电极间距对纳秒脉冲SDBD等离子体分布特性的影响,并从理论上分析类弥散和离散通道两种等离子体分布的形成机制。实验研究表明,电极间距是造成两种典型特性及不同等离子体分布的关键结构参数。通过对放电区域外电场的仿真计算发现,不同电极间距下外电场分布形态和数值的差异,是形成两种不同等离子体分布模式的直接原因。结合气体放电基本理论,分析认为:等离子体类弥散分布是由于流注前向发展和横向激发电离同时在起作用,而离散通道分布是因为流注通道以前向发展为主、横向电离作用较弱;两种等离子体分布模式形成的根本原因在于电场随时间的增大率和随空间的减小率以及流注通道的发展速度之间的匹配。
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关键词 纳秒脉冲表面介质阻挡放电电极间距等离子体分布特性外电场分布    
Abstract:Electrode gap is an important geometric parameter in surface dielectric barrier discharge (SDBD). Based on experimental studies and simulations, the influence of electrode gaps on the distribution characteristics of nanosecond-pulsed SDBD is studied, and the mechanisms of two plasma distributions (quasi-diffuse mode and separated-channel mode) are analyzed theoretically. Experimental results show that electrode gap is the key geometric parameter accounting for the two typical discharge characteristics and different plasma distributions. Simulations of external electric fields of discharge areas present that the direct reasons of two plasma distributions are the morphological and numerical differences of external electric fields at different gaps. Combined with gas discharge theory, it is deduced that the quasi-diffuse distribution is due to that the streamers forward-expanding and spanwise-exciting ionization act simultaneously, while the separated-channel distribution is mainly because the streamer forward expanding is dominant and span-wide ionization is relatively weak. The main mechanisms are the match of the changing rate of electric field with time and space, and the expanding velocity of streamer channels.
Key wordsNanosecond-pulsed    surface    dielectric    barrier    discharge    electrode    gap    plasma    distribution    characteristics    distribution    of    external    electric    field   
收稿日期: 2016-06-02      出版日期: 2017-02-08
PACS: TM89  
基金资助:国家自然科学基金(51577177和51607018),中央高校基本科研业务费(106112016CDJXY150003)资助项目
作者简介: 姜 慧 女,1985年生,博士,研究方向为气体放电等离子体应用。E-mail: jianghui@cqu.edu.cn;邵 涛 男,1977年生,博士,研究员,博士生导师,研究方向为高电压技术、低温等离子体和脉冲功率技术。E-mail: st@mail.iee.ac.cn(通信作者)
引用本文:   
姜慧, 邵涛, 章程, 严萍. 不同电极间距下纳秒脉冲表面介质阻挡放电分布特性[J]. 电工技术学报, 2017, 32(2): 33-42. Jiang Hui, Shao Tao, Zhang Cheng, Yan Ping. Distribution Characteristics of Nanosecond-Pulsed Surface Dielectric Barrier Discharge at Different Electrode Gaps. Transactions of China Electrotechnical Society, 2017, 32(2): 33-42.
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