Discharge Process Analysis of Plasma Jet with Spiral Needle-Ring Electrode
Zhang Ruobing1, Han Qianting1, Li Shuang1, Liu Hui2
1. Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China; 2. Electric Power Research Institute State Grid Shandong Electric Power Company Jinan 250000 China
Abstract：To reduce the breakdown and maintenance voltages of the gas discharge, a plasma jet device with spiral needle-ring electrodes was designed. The discharge voltage and current waveforms under different voltages were studied. It is shown that helium plasma jet discharge can be divided into three stages, including corona discharge, dielectric barrier discharge and plasma jet discharge, which can be distinguished according to the characteristics of the discharge voltage and current waveforms. The spiral needle-ring structure can reduce the average gas gap distance between electrodes, thereby reducing the breakdown and maintenance voltages of the gas discharge, making the discharge easier. Residual charge in the process of the voltage reverse increases the synthetic electric field, so that the discharge is easier to start. Due to the asymmetric electrode structure, gas is more prone to discharge in the positive half cycle. The discharge eventually develops to filamentary discharge as the applied voltage increases.
张若兵, 韩倩婷, 李爽, 刘辉. 螺旋针-环结构等离子体射流放电过程分析[J]. 电工技术学报, 2017, 32(20): 90-96.
Zhang Ruobing, Han Qianting, Li Shuang, Liu Hui. Discharge Process Analysis of Plasma Jet with Spiral Needle-Ring Electrode. Transactions of China Electrotechnical Society, 2017, 32(20): 90-96.
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2017, Vol. 32 
