纳秒脉冲电源作用下沿面介质阻挡放电等离子体特性参数的仿真计算

发布时间：2018-07-04 17:41

本文选题：纳秒脉冲电源 + 电路仿真　；参考：《高压电器》2017年04期

【摘要】：为了深入探究纳秒脉冲电源作用下沿面介质阻挡放电等离子体特性参数的演化规律,揭示其作用机理,文中搭建了纳秒脉冲电源作用下非对称结构沿面介质阻挡放电等离子体光电特性实验测量平台,并在此基础上建立了放电集总参数等效电路模型,通过对比实验推理和仿真计算分别得到的放电电流以及电子密度参量,证明了模型的有效性。文中通过该模型计算得到了介质表面电压、气隙电压以及电子温度等等离子体特性参数随时间的变化关系,并进一步研究了电源斜率对大气压沿面介质阻挡放电电流的影响。得到的主要结论为:单极性纳秒脉冲电源作用下,在脉冲上升沿存在二次放电,在下降沿存在反向放电过程,电子温度与电子密度高达8.3 e V和2.7×10~(18)m~(-3),电源斜率对放电有重要的影响,随着电压上升率增加,第1次放电的电流增大。放电时刻提前,但是对应的第2次放电电流略有减小,下降率的增加则对应着第2次放电电流幅值的增加,第1次放电的电流则略有减小,研究结果为深入分析激励器放电特性,提高等离子体发生器效率提供参考。
[Abstract]:In order to probe into the evolution rule of characteristic parameters of dielectric barrier discharge (DBD) plasma under the action of nanosecond pulse power supply, and to reveal its action mechanism, In this paper, an experimental measurement platform for the optoelectronic characteristics of dielectric barrier discharge plasma with asymmetric structure under the action of nanosecond pulse power supply is built, and the equivalent circuit model of discharge lumped parameters is established. The validity of the model is proved by comparing the discharge current and electron density parameters obtained by experimental reasoning and simulation. The relationship of plasma characteristic parameters such as dielectric surface voltage, air gap voltage and electron temperature with time is calculated by this model. The influence of power supply slope on dielectric barrier discharge current along atmospheric pressure is further studied. The main conclusions are as follows: under the action of unipolar nanosecond pulse power supply, there exists a secondary discharge at the rising edge of the pulse, and a reverse discharge process at the descending edge. The electron temperature and electron density are up to 8.3 EV and 2.7 脳 10 ~ (18) m ~ (-3). The slope of the power supply has an important effect on the discharge. The current of the first discharge increases with the increase of the voltage rise rate. The discharge time is ahead of time, but the corresponding second discharge current decreases slightly, the decrease rate increases corresponding to the second discharge current amplitude, and the first discharge current decreases slightly. The results provide a reference for analyzing the discharge characteristics of the exciter and improving the efficiency of the plasma generator.
【作者单位】：齐鲁工业大学电气工程与自动化学院;山东大学电气工程学院特高压输变电技术与装备山东省重点实验室;

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