Strategies of Power Measurement and Energy Coupling Enhancement in Nanosecond Pulsed Coaxial Dielectric Barrier Discharges

被引:8
作者
Bai, Han [1 ,2 ]
Huang, Bangdou [1 ]
Zhang, Cheng [1 ,2 ]
Shao, Tao [1 ,2 ]
机构
[1] Chinese Acad Sci, Beijing Int S&T Cooperat Base Plasma Sci & Energy, Inst Elect Engn, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
Discharges (electric); Voltage measurement; Capacitors; Monitoring; Current measurement; Capacitance; Probes; Atmospheric pressure plasma; dielectric barrier discharge (DBD); nanosecond pulsed discharge; power measurement; reduced electric field; ATMOSPHERIC AIR; DBD; NITROGEN; TIME;
D O I
10.1109/TPS.2021.3073530
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Dielectric barrier discharges (DBDs) driven by nanosecond high-voltage pulses can be quite different from those driven by alternating current (ac) sources, on both electrical characteristics and plasma microparameters. In this article, the power measurement strategy in nanosecond pulsed coaxial DBDs is optimized. The effect of different experimental parameters on energy deposition and reduced electric field in plasma is investigated. First, the results measured using the instantaneous power (from the production of voltage and current) method and that using the v-q trace (Lissajous curve) method are compared and the source of divergence is analyzed. By comparing monitor capacitors with different materials and capacitances, it is demonstrated that the high-frequency response of the monitor capacitor is essential and the capacitance value can be adjusted according to the applied voltage, taking both the dynamic range of oscilloscope and the signal-to-noise ratio into consideration. Second, the influence of morphology of ground electrode, voltage rising time, and pulse width on energy deposition per-pulse and reduced electric field, obtained from the nitrogen spectral line-ratio, is studied. It is found that the copper foil promotes the discharge energy coupling per-pulse compared with the copper grid, while the reduced electric field obtained from the nitrogen line-ratio with the copper foil is weaker. A shorter rising time will also enhance the energy coupling per-pulse, as well as the reduced electric field.
引用
收藏
页码:1605 / 1613
页数:9
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