不同气体介质下极不对称DBD放电模式转化研究  

Investigation on Discharge Mode Transition of Highly Asymmetric DBD Under Different Gas Dielectrics

作　　者：罗朋振 孙丹凤[1] 鲁娜[1] 商克峰[1] 李杰[1] 吴彦[1] 

机构地区：[1]大连理工大学电气工程学院,辽宁大连116024

出　　处：《高压电器》2017年第4期65-71,共7页High Voltage Apparatus

摘　　要：在大气压条件下,气隙距离为12 mm时,针—板DBD结构在不同的气体介质中会表现出不同的放电模式。当气体介质为氩气、放电电压为4 k V时,放电电压的正半周期表现为丝状放电模式,放电电压的负半周期为类辉光放电模式。当气体介质为氮气、放电电压为12 k V时,放电为电晕放电模式,但电压的正负半周期电晕放电模式也存在区别,在电压的负半周期,电流脉冲更加规则。当放电电压升高到15 k V,放电电压的正、负半周期会出现不同的放电模式,正半周期为丝状放电模式,负半周期呈现类辉光放电模式。在空气条件下,放电电压为12 k V时,存在和氮气条件下相似的电晕放电模式,而当放电电压为15 k V时,在整个周期只表现出丝状放电模式。The needle-to-plate DBD （gas gap 12 mm） exhibits different discharge modes under the conditions of atmospheric pressure. As Ar was used as gas dielectric, micro-discharge filament mode and glow-like discharge mode occurred in the positive and as gas dielectric, corona discharge charge voltage （12 kV）, and more negative period of the discharge voltage （4 kV）, respectively. As N2 was used mode was observed, which was different in positive and negative period of dis- regular current pulse occurred in the negative period, namely Trichel pulse. As the discharge voltage increased to 15 kV, micro-discharge fitament mode and glow-like discharge mode occurred in the positive and negative period of the discharge voltage, respectively. As air was used as gas dielectric and discharge voltage was 12 kV, corona discharge mode similar to that under N2 condition was obtained, while micro- discharge filament mode occurred during the whole discharge period as the discharge voltage further increased to 15 kV.

关 键 词：针—板DBD 放电模式 类辉光放电 丝状放电 

分 类 号：O53[理学—等离子体物理] O461.2[理学—物理]