大气压介质阻挡高频放电三种模式的Lissajous 图形.PDFVIP

2009 年 6 月 电 工 技 术 学 报 Vol.24 No. 6 第 24 卷第 6 期 TRAN SACTION S OF CHINA ELECTROTECHNICAL SOCIETY Jun . 2009 大气压介质阻挡高频放电三种模式的 Lissajous 图形 郝艳捧 阳林 王晓蕾 （华南理工大学电力学院 广州 5 10640） 摘要 大气压介质阻挡放电存在多种放电模式。本文 用高频高压电源，分别进行了大气 压氦气均匀的介质阻挡放电和大气压空气丝状介质阻挡放电的试验，通过测量外施电压、回路 电流和拍摄ICCD 短时曝光的放电图像，研究了氦气单脉冲辉光放电、多脉冲辉光放电和空气 丝状放电的Lissaj ous 图形特征。结果表明: 两种辉光放电均起始于汤森放电，放电电流最大时 为辉光放电 ；而丝状放电为流注放电。高频下辉光放电的Lissaj ous 图形不同于工频的两条平行 线，而是左右两边有一次曲线性阶跃的平行四边形 ；伪辉光放电的电流波形每半个周期内有几 个电流脉冲，Lissaj ous 图形中放电阶段对应的两条边就有几次曲线性阶跃 ；丝状放电的 Lissaj ous 图形近似为平行四边形。 关键词：介质阻挡放电 Lissaj ous 图形 辉光放电 多脉冲辉光放电 中图分类号：TM2 13 Lissaj ous Figures of Single Pulse Glow, Multi-Pulse Glow and Filamentary Dielectric Barrier Discharges Under High Frequency Voltages at Atmospheric Pressure Hao Yanp eng Yang L in Wang X iaolei （South China University of Technology Guangzhou 5 10640 China ） Abstract Dielectric barrier discharges (DBD) under atmospheric pressure in helium or in air were carried out at a higher frequency . Lissaj ous figures of single pulse glow, multi-pulse glow and filamentary discharges were investigated, applied voltage and current pulses were measured, and discharge photos were taken by ICCD in an exposure time of ns order . The results show that for both glow discharges, the discharge mode at the discharge inception for each current pulse is a Townsend one, and that at the discharge current peak is a glow one. Lissaj ous figure of glow discharges by a applied voltage with a high frequency is a quadrilateral with one step on the le