电极环参数对环状表面介质阻挡放电特性的影响  

Influence of Electrode-ring Parameters on Characteristics of Annular Surface Dielectric Barrier Discharge

作　　者：姜慧 杨帆[1] 李文慧 邓鸿飞 刘海波 JIANG Hui;YANG Fan;LI Wenhui;DENG Hongfei;LIU Haibo(State Key Laboratory of Power Transmission Equipment&System Security and New Technology(Chongqing University),Shapingba District,Chongqing 400044,China;Communication Sergeant School,Army Engineering University,Shapingba District,Chongqing 400035,China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044 [2]陆军工程大学通信士官学校,重庆市沙坪坝区400035

出　　处：《中国电机工程学报》2021年第17期6127-6136,共10页Proceedings of the CSEE

基　　金：国家自然科学基金(青年科学基金项目)(51607018);中央高校基本科研业务费专项资金资助项目(2020CDJQY-A023)。

摘　　要：表面介质阻挡放电在流动控制、生物医学等诸多领域应用前景广阔。该文基于新型环状表面介质阻挡放电激励器,研究电极环半径和放电方向对放电特性的影响。结果表明,位移电流偏置不随结构参数变化,外向放电的起始电压低于内向放电;内向放电电流脉冲数随半径线性增大,而外向放电时无明显变化;放电平均功率随半径线性增大,但相同参数下外向放电功率高于内向放电;放电为离散通道放电和弥散放电共存的混合模式,但内向放电时以弥散模式为主,外向放电以离散通道模式为主;放电面积随半径线性增大,内向放电存在一个最佳半径,可使放电均匀性和长度都达到最佳,而外向放电的长度随半径减小;内向、外向放电时外电场分布规律的差异与实验现象相吻合。研究结果可为不同应用领域中激励器的结构设计提供理论指导。Surface dielectric barrier discharge has large application prospects in many fields such as flow control, biomedicine, and so on. Based on a novel annular surface dielectric barrier discharge actuator, the influences of electrode-ring radius and discharge direction on discharge characteristics were investigated in this paper. Experimental results show that the bias of displacement current hardly changes with electrode-ring parameters. The ignition voltage of outward discharge is lower than that of inward discharge. The number of inward discharge current pulses approximately linearly increases with electrode-ring radius, while the number of outward discharge does not show any noticeable change with radius. The average power increases linearly with radius, but the average power of outward discharge is higher than that of inward discharge. All of the discharges present a mixed discharge mode of separated-channel discharge and diffuse discharge, while diffuse discharge is prominent in inward discharge, and separated-channel discharge is the majority of outward discharge. The discharge area increases linearly with radius. There is an optimal radius of inward discharge to get the best discharge uniformity and length, while the length of outward discharge decreases with radius. There are some differences of external electric field distributions between inward and outward discharges, which could explain the experimental phenomena quite well. This paper will be helpful in geometry design of actuators applied in various fields.

关 键 词：电极环半径 放电方向 微放电 残余电荷 放电模式 空间外电场 

分 类 号：TM89[电气工程—高电压与绝缘技术]