Dielectric barrier discharge characteristics of three-electrode structure under dual-source excitation
-
摘要: 介质阻挡放电 (DBD) 在工业中得到广泛应用，但效率限制了它的进一步应用。提出了一种DBD结构和针板结构相结合的三电极结构。将正极性脉冲电源施加在DBD电极上，负极性脉冲电源施加到针板电极上。分析了不同结构下三电极DBD的放电特性、现象和光谱强度。结果表明，三电极结构更加有利于DBD放电通道的产生，其放电均匀性、发光强度均强于双电极DBD，特别是在丝网接地电极条件下，放电更加强烈。当三种电极结构正极性电压维持在11 kV，负极性电压为−5 kV时，丝网接地三电极中DBD的放电电流峰值达到1.54 A，而实心接地三电极和传统双电极中DBD的放电电流峰值为1.14 A和0.74 A。在负极性脉冲维持期间，针网间隙处于击穿状态，DBD放电出现很大的放电电流。在三电极结构中，随着施加在针板上负极性电压的升高也使三电极DBD放电更加强烈。不同结构下的DBD的放电光谱表明在丝网接地时三电极DBD激发粒子的光谱强度最强。这一趋势与DBD放电电流和功率一致。Abstract: Dielectric barrier discharge (DBD) is widely used in industry, but the efficiency limits its further application. This paper proposes a three-electrode structure combining a DBD structure and a needle-plate structure. A positive polarity pulsed power supply is applied to the DBD electrode and a negative polarity pulsed power supply is applied to the needle plate electrode. The discharge characteristics, phenomena and spectral intensity of the three-electrode DBD under different structures are analyzed. The results show that the three-electrode structure is more beneficial to the generation of DBD discharge channels, and its discharge uniformity and luminous intensity are stronger than that of the two-electrode DBD, especially under the condition of mesh grounded electrode. When the positive polarity voltage of the three-electrode structure was maintained at 11 kV and the negative polarity voltage was −5 kV, the peak discharge current of DBD in the mesh grounded three-electrode reached 1.54 A, while the peak discharge currents of DBD in the solid grounded three-electrode and the traditional two-electrode were 1.14 A and 0.74 A respectively. During the period of the negative polarity pulse maintenance, the needle mesh gap was in the state of breakdown, and the DBD discharges appeared to have a large discharge current. In the three-electrode structure, the three-electrode DBD discharges also become more intense with the increase of the negative polarity voltage applied to the needle plate. According to the discharge spectra of DBD under different structures, spectral intensity of excited particles is the strongest among the three-electrode DBD grounded with wire mesh. This trend is consistent with the discharge current and power of DBD.
-
图 3 高压脉冲电源电压输出波形图
Figure 3. Output voltage waveforms of high-voltage pulse power supply
图 5 不同电极结构下DBD放电的电压-电流波形图
Figure 5. Voltage current waveform of DBD discharge under different electrode structures
图 6 双电极和三电极DBD放电电流对比
Figure 6. Discharge current comparison between double-electrode and three-electrode DBDs
图 7 不同结构的DBD在不同正极性压下的放电功率
Figure 7. Discharge power of DBD under different positive voltage with different structures
图 8 不同结构的DBD在不同负极性电压下的放电功率
Figure 8. Discharge power of DBD under different negative voltage with different structures
-
[1] Kogelschatz U. Dielectric-barrier discharges: their history, discharge physics, and industrial applications[J]. Plasma Chemistry and Plasma Processing, 2003, 23(1): 1-46. doi: 10.1023/A:1022470901385 [2] Brandenburg R. Dielectric barrier discharges: progress on plasma sources and on the understanding of regimes and single filaments[J]. Plasma Sources Science and Technology, 2017, 26: 053001. doi: 10.1088/1361-6595/aa6426 [3] Homola T, Pongrác B, Zemánek M, et al. Efficiency of ozone production in coplanar dielectric barrier discharge[J]. Plasma Chemistry and Plasma Processing, 2019, 39(5): 1227-1242. doi: 10.1007/s11090-019-09993-6 [4] Sung T L, Teii S, Liu C M, et al. Surface catalytic effect of electrode materials on ozone dissociation in a cylindrical dielectric barrier discharge ozonizer[J]. IEEE Transactions on Plasma Science, 2012, 40(10): 2751-2755. doi: 10.1109/TPS.2012.2210447 [5] Wang Xiaojing, Wang Peng, Wang Qiao, et al. Efficient degradation of 4-fluorophenol under dielectric barrier discharge plasma treatment using Cu/Fe-AO-PAN catalyst: role of H2O2 production[J]. Chemical Engineering Journal, 2021, 420: 127577. doi: 10.1016/j.cej.2020.127577 [6] Liang Peng, Jiang Wanmin, Zhang Lan, et al. Experimental studies of removing typical VOCs by dielectric barrier discharge reactor of different sizes[J]. Process Safety and Environmental Protection, 2015, 94: 380-384. doi: 10.1016/j.psep.2014.09.003 [7] Osawa N, Kaga H, Fukuda Y, et al. Comparison of the ozone generation efficiency by two different discharge modes of dielectric barrier discharge[J]. The European Physical Journal—Applied Physics, 2011, 55: 13802. doi: 10.1051/epjap/2010100439 [8] Zhang Xuming, Lee B J, Im H G, et al. Ozone production with dielectric barrier discharge: effects of power source and humidity[J]. IEEE Transactions on Plasma Science, 2016, 44(10): 2288-2296. doi: 10.1109/TPS.2016.2601246 [9] Mastanaiah N, Banerjee P, Johnson J A, et al. Examining the role of ozone in surface plasma sterilization using dielectric barrier discharge (DBD) plasma[J]. Plasma Processes and Polymers, 2013, 10(12): 1120-1133. doi: 10.1002/ppap.201300108 [10] Fang Zhi, Liu Yuan, Liu Kun, et al. Surface modifications of polymethylmetacrylate films using atmospheric pressure air dielectric barrier discharge plasma[J]. Vacuum, 2012, 86(9): 1305-1312. doi: 10.1016/j.vacuum.2011.11.021 [11] Shao Tao, Zhang Cheng, Long Kaihua, et al. Surface modification of polyimide films using unipolar nanosecond-pulse DBD in atmospheric air[J]. Applied Surface Science, 2010, 256(12): 3888-3894. doi: 10.1016/j.apsusc.2010.01.045 [12] De Geyter N, Morent R, Van Vlierberghe S, et al. Effect of electrode geometry on the uniformity of plasma-polymerized methyl methacrylate coatings[J]. Progress in Organic Coatings, 2011, 70(4): 293-299. doi: 10.1016/j.porgcoat.2010.11.009 [13] Jiang Hui, Li Wenhui, Xu Yaozong, et al. Influence of segmented grounding electrodes on electrical characteristics in annular surface dielectric barrier discharge[J]. Journal of Physics D: Applied Physics, 2021, 54: 265203. doi: 10.1088/1361-6463/abf578 [14] Liu Feng, Chu Haijing, Zhuang Yue, et al. Influence of dielectric materials on discharge characteristics of coaxial DBD driven by nanosecond pulse voltage[J]. Plasma Research Express, 2020, 2: 034001. doi: 10.1088/2516-1067/abaa36 [15] Kettlitz M, Höft H, Hoder T, et al. Comparison of sinusoidal and pulsed-operated dielectric barrier discharges in an O2/N2 mixture at atmospheric pressure[J]. Plasma Sources Science and Technology, 2013, 22: 025003. doi: 10.1088/0963-0252/22/2/025003 [16] Wang Qian, Liu Feng, Miao Chuanrun, et al. Investigation on discharge characteristics of a coaxial dielectric barrier discharge reactor driven by AC and ns power sources[J]. Plasma Science and Technology, 2018, 20: 035404. doi: 10.1088/2058-6272/aaa357 [17] 李清泉, 马磊. 影响介质阻挡放电的因素[J]. 高电压技术, 2007, 33(9):10-12,16 doi: 10.13336/j.1003-6520.hve.2007.09.003Li Qingquan, Ma Lei. Experimental study of factors affecting dielectric-barrier discharge[J]. High Voltage Engineering, 2007, 33(9): 10-12,16 doi: 10.13336/j.1003-6520.hve.2007.09.003 [18] Jiang Nan, Guo Lianjie, Qiu Cheng, et al. Reactive species distribution characteristics and toluene destruction in the three-electrode DBD reactor energized by different pulsed modes[J]. Chemical Engineering Journal, 2018, 350: 12-19. doi: 10.1016/j.cej.2018.05.154 [19] 商克峰, 曹晓萌, 王肖静, 等. 高压电极构型对DBD装置放电特性及臭氧生成的影响[J]. 高电压技术, 2016, 42(5):1394-1400 doi: 10.13336/j.1003-6520.hve.20160412004Shang Kefeng, Cao Xiaomeng, Wang Xiaojing, et al. Effect of high voltage electrode geometry on the discharge characteristics and the ozone generation of a DBD device[J]. High Voltage Engineering, 2016, 42(5): 1394-1400 doi: 10.13336/j.1003-6520.hve.20160412004 [20] Chen Ying, Fu Mengji, Shang Kefeng. Discharge characteristics and ozone generation analysis of dual-power excited three-electrode DBD[C]//Proceedings of the 7th International Symposium on Advances in Electrical, Electronics and Computer Engineering. 2022: 1229417. [21] Chang Zhengshi, Shi Xingmin, Zhang Guanjun, et al. Effects of atmospheric DBCD plasma on three kinds of typical microorganisms[J]. IEEE Transactions on Plasma Science, 2013, 41(7): 1703-1708. doi: 10.1109/TPS.2013.2262954 -
下载:
点击查看大图
图(9)
计量
- 文章访问数: 309
- HTML全文浏览量: 127
- PDF下载量: 80
- 被引次数: 0
