【摘要】 为了优化介质阻挡放电(DBD)发生器设计,提高放电效率,实验研究了介质阻挡放电装置的平均放电电流特性,包括用Q-U李萨如图形测量法研究了激励电源特性和发生器结构参数对平均放电电流的影响。实验结果表明:采用高频电源、薄介质和小放电间隙可得到均匀放电;在DBD发生器结构和工作气体属性固定的情况下,提高激励电压幅值和激励频率可增大平均放电电流、提高放电强度;采用薄介质和减小放电气隙宽度都可提高放电强度,得到较大的平均放电电流。因此可以通过改变激励电源参数和放电装置结构有效地调节放电电流。更多还原

【Abstract】 Dielectric barrier discharge(DBD) is one form of gas discharges which produces non-thermal plasma.In order to optimize the structure of DBD generator and improve the discharging efficiency,the average discharge current of DBD is experimentally studied.Factors influencing the variation of average discharge current such as the applied voltage and frequency,the discharge gap distance and the thickness of barrier,are studied with the Q-U Lissajous figure.The experimental results are as follows: the symmetrical discharge is obtained by high applied frequency,thin electric barrier and small gas gap,with certain structure of DBD generator and gas in the discharge gap,the average discharge current and the discharge intensity will increase with the incrassation of voltage and applied frequency,the average discharge current will reduce with the incrassation of discharge gap distance and the thickness of barrier.Therefore the parameters of applied power and DBD generator should be optimized for improving the average discharge current.更多还原