不同电源激励下多针-平板介质阻挡放电特性比较  

Comparison of Discharge Characteristics of Multineedle-to-plane Dielectric Barrier Discharge under Different Power Supply

作　　者：黄发辉 杨静[1] 吴伟杰[1] 方志[1] 

机构地区：[1]南京工业大学电气工程与控制科学学院,南京211816

出　　处：《绝缘材料》2015年第12期49-54,共6页Insulating Materials

基　　金：国家自然科学基金资助项目(51377075);江苏省自然科学基金资助项目(BK20131412);江苏省"六大人才高峰"项目(2014XNY006);江苏省"青蓝工程"项目(20140610);江苏省高校研究生实践创新计划项目(SJLX_0333)

摘　　要：利用多针-平板电极在大气压空气中产生介质阻挡放电(DBD)等离子体,通过实验研究比较了μs脉冲和高频电源激励下的放电特性。测量了放电的电压电流波形图等电气特性,同时获得了放电发光图像及光谱特性等光学特性。计算得到放电功率、传输电荷、振动温度和电子密度等主要放电参量,研究了不同电压幅值下这些放电参量的变化规律,并结合放电机理对实验结果进行分析。结果表明:μs脉冲DBD比高频DBD更强烈,脉冲电压幅值的上升速率快,迅速在放电空间产生很高的过电压,加上脉冲放电过程中两次放电的相互影响,有效降低了放电空间的场强,因而脉冲DBD具有更好的放电均匀性和更高的放电效率。A multineedle-to-plane electrode was used to produce dielectric barrier discharge （DBD） plasma in atmospheric air, and the discharge characteristics under high frequency power and μs pulse power were compared. The electrical characteristics such as discharge voltage and current waveform graph were measured, and the optical properties such as glow discharge image and spectral characteristics were obtained. The discharge parameters such as discharge power, transmission charge, vibrational temperature, and electron density were obtained through calculation, and the changing rule of these parameters under different voltages amplitude were analyzed combining the experimental results of discharge mechanism. The results show that compared with the high frequency power, the DBD excited by μs pulse power is more intense, and the pulse voltage amplitude increases rapidly, then the high over-voltages is generated instantly in the discharge space, which reduces the discharge space field effectively as well as the mutual influence of two discharge during pulsed discharge process, so it has better discharge uniformity and higher discharge efficiency.

关 键 词：介质阻挡放电 等离子体 多针-平板电极 高频电源 μs脉冲电源 

分 类 号：TM855[电气工程—高电压与绝缘技术]