Experimental and Optical Characteristics of Nanosecond-Pulse Surface Sliding Discharge
Wang Yang1, 2, Zhang Cheng2, 3, Xie Qing1, Yan Ping2, 3, Shao Tao2, 3
1. School of Electrical and Electronic Engineering North China Electric Power University Baoding 071003 China; 2. Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China; 3. Key Laboratory of Power Electronics and Electric Drive Chinese Academy of Sciences Beijing 100190 China
Abstract：In this paper, in order to investigate the discharge characteristics of the nanosecond-pulse surface sliding discharge, a new type of three-electrode structure actuator is adopted to generate sliding discharge driven by a negative DC high voltage combined with a nanosecond pulse. The effects of the DC voltage, the pulse voltage and their potential differences on the discharge characteristics of nanosecond-pulse sliding discharge are studied. The experimental results show that the amplitude of the DC voltage has slight effect on the current through the pulse voltage electrode, but it significantly affects the current through the DC voltage electrode when the pulse voltage is fixed. Moreover, current through the DC voltage electrode increases with the increasing of DC voltage, while the peak current increases faster when the sliding discharge occurs. Furthermore, the ignition time of current through the DC voltage electrode is earlier at larger amplitude of DC voltage. The currents through the pulse and DC voltage electrodes increase with the amplitude of applied pulse voltage when the DC voltage is fixed. There is a minimal voltage threshold (the voltage difference between the pulse component and DC component) for igniting a nanosecond-pulse sliding discharge. It is found that the sliding discharge occurs when the potential difference is 22kV, and at this time the instantaneous power, consumption energy and the state energy appear significant increasing trends. The current through the pulse voltage electrode is dominated by the pulse component while the current through the DC voltage electrode is dominated by the DC component under the identical potential difference. Power and energy are primarily affected by the proportion of pulse component. In addition, discharge images are taken by a digital camera. The images show that the nanosecond-pulse sliding discharge occurs when applying suitable pulse voltage and negative DC high voltage on the first-electrode and the third-electrode respectively. In addition, the plasma discharge region significantly extends and the large area plasma can be obtained on the surface of the dielectric barrier.
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2017, Vol. 32 
