表面介质阻挡放电功率特性实验研究

Experimental Study on Power Characteristic of Surface Dielectric Barrier Discharge

摘要: 研究影响表面介质阻挡放电的因素，能为获得较大功率的激励器设计提供实验基础。本文在大气环境条件下，以环氧作为介质阻挡材料，基于高频高压电源进行了表面介质阻挡放电实验，研究了电压幅值和频率、介质厚度以及电极间距对放电功率特性的影响。结果表明，增大外加电压幅值以及减小介质厚度和电极间距，微放电通道数目增加且发光强度增强，传输电荷能力增强，放电瞬时功率峰值增大，其中电压幅值对放电功率特性的影响尤为显著；频率升高，瞬时功率峰值呈线性上升，但随频率的变化率较小。

Abstract: The experimental studies on the factors that influence the surface dielectric barrier discharge (SDBD) are helpful to provide experimental basis for the design of actuators with higher power. Based on an HF/HV power supply, with epoxy as a dielectric barrier, experiments on surface di-electric barrier discharge were carried out in air at atmospheric pressure. The effects of applied voltage, voltage frequency, dielectric thickness and electrode gap on power characteristic of sur-face dielectric barrier discharge were investigated. The experimental results show that the higher the applied voltage, the thinner the dielectric thickness; and decreasing electrode gap can increase the number of micro-discharge channels and enhance its luminous intensity. The charge transfer capability is intensified, so that the peak value of instantaneous power increases. The effect of the applied voltage on power characteristic is particularly significant. Higher voltage frequency leads to the peak value of instantaneous power growing linearly and slightly.