高频宽气隙介质阻挡放电负载特性研究  

Characteristics of Wide-Gape Dielectric Barrier Discharge at High Frequency: An Experimental Study

作　　者：穆昱 李常青[1] 刘平[1] 张旭[1] Mu Yu;Li Changqing;Liu Ping;Zhang Xu(Information Engineering College, Zhengzhou University, Zhengzhou 450052, Chin)

机构地区：[1]郑州大学信息工程学院,郑州450052

出　　处：《真空科学与技术学报》2018年第4期279-283,共5页Chinese Journal of Vacuum Science and Technology

摘　　要：为了研究高频宽气隙条件下介质阻挡放电特性,实现电源和放电管之间的负载匹配。使用频率20~40 k Hz连续可调的全桥方波逆变电源作为主电路,采用脉冲宽度调制作为控制策略,利用高频变压器漏感和放电管等效电容进行阻抗匹配。重点研究了高频宽气隙放电特性,采用Lissajous图形法研究放电过程中等效电容,等效电阻等电学参数。研究结果表明,稳态工作时的放电负载可等效为电容电阻相串联的模型,随着放电负载两端电压的升高,放电管的等效电容增加;随着放电功率的增加,放电负载的等效电阻线性增加。Herein, we addressed the impedance matching of power supply and dielectric barrier discharge （DBD） tube with wide-gap and operating at high frequency. The inverse power supply provides a continuously adjustable full bridge square-wave in 20 -40 kHz range with a well-controlled pulse-width modulation （PWM） because the impedance match between the leaky inductance of the high frequency transformer and the equivalent ca- pacitance of the discharge tube can be easily realized. The discharge behavior, including but not limited to the e- quivalent capacitance and equivalent resistance, was investigated by measuring Lissajous figures. The results show that in steady discharge, the load of DBD tube can be mathematically modeled with the equivalent capacitance and equivalent resistance connected in series. For example, as the discharge voltage increased, the equivalent capaci- tance increased;and as the discharge power increased, the equivalent resistance of the discharge load linearly in- creased.

关 键 词：介质阻挡放电 脉冲宽度调制 阻抗匹配 Lissajous图形法 宽气隙 

分 类 号：TM835.4[电气工程—高电压与绝缘技术]