Experimental Study on the Effect of the Pulse Repetition Frequency on the Characteristics of Microsecond-Pulse Gliding Discharges
Niu Zongtao1,2, Zhang Cheng1,3, Wang Ruixue1,3, Chen Genyong2, Shao Tao1,3
1.Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China; 2.School of Electrical Engineering Zhengzhou University Zhengzhou 450001 China; 3.Key Laboratory of Power Electronics and Electric Drive Chinese Academy of Sciences Beijing 100190 China
Abstract Pulsed gliding discharges can generate non-thermal plasmas with high-energy and high electron density at atmospheric pressure,which have widely application prospects in the fields of effluent treatment,ignition and combustion,and methane conversion.In this paper,in order to investigate the characteristics of the microsecond-pulse gliding discharges,experimental studies of the gliding discharges at different pulse repetition frequencies (PRFs) are carried out by using a lab-made microsecond-pulse generator.The experimental results show that spark channels moved along the blade of the sword electrodes in a fast air flow and in the flow direction at atmospheric pressure.The highest altitude of the spark channel reaches 29 mm and the longest length of the spark channel is 43 mm.Moreover,the spark channels dispersed with each other.Furthermore,the results of the effect of the PRF on the characteristics of microsecond-pulse gliding discharges show that,in the case of high PRF (500~1 500 Hz),the spark channels gradually moves upwards with the increase of the PRF,and the highest altitude of the spark channel moves towards the tool nose.As the PRF increased,the breakdown voltage is decreased and the working voltage is dispersed.Such variation is closely related to the memory effect of the residual particles and the change of the electrode distance.In the case of low PRF (1~300 Hz),because the memory effect of the residual particles has less effect on the gliding discharges in air flow,spark channels cannot move upwards along the blade of the sword electrodes.
Niu Zongtao,Zhang Cheng,Wang Ruixue等. Experimental Study on the Effect of the Pulse Repetition Frequency on the Characteristics of Microsecond-Pulse Gliding Discharges[J]. Transactions of China Electrotechnical Society, 2016, 31(19): 191-198.
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2016, Vol. 31 
