高频高压下介质阻挡放电的实验研究

利用介质阻挡放电实验装置和测量系统研究了不同的介质层厚度、外加电压以及空气间隙距离的等离子体助燃(PAC)激励器放电特性,并在实验数据的基础上,根据介质阻挡放电等效电路对空气间隙上的两端电压、放电电流等参数进行了计算。结果表明,介质层的厚度对放电脉冲的次数的影响很大;随外加电压的增加,脉冲放电增加,放电的起始时刻不断提前;随着空气间隙距离的减小,激励器放电强度明显增强,放电更加均匀。

Investigation and Simulation of Dielectric Barrier Discharge under High Frequency and High Voltage

With the experimental facility and measurement system of dielectric barrier discharge(DBD) ,this paper studied the characteristic of plasma assisted combustion(PAC) actuator discharge under different thickness dielectric layers,applied voltage and air gap distance.On the basis of the experimental data,the parameters such as the terminal voltages and the discharge current on the air gap clearance are calculated according to an equivalent circuit.The results show that,the thickness of medium strongly influences discharge pulse times;with the increasing of applied voltage,discharge pulse times increases,and discharge starting time continuously brings forward;while with the decreasing of air gap distance,actuator discharge intensity distinctly enhances,and the discharge is more uniformity.