Estimation of Surface Roughness due to Electrode Erosion in Field-Distortion Gas Switch

LIU Xuandong (刘轩东); WANG Hu (王虎); LI Xiaoang (李晓昂); ZHANG Qiaogen (张乔根); et al.

doi:10.1088/1009-0630/15/8/18

Plasma Science and Technology > 2013 > 15(8): 812-816. > DOI: 10.1088/1009-0630/15/8/18

LIU Xuandong (刘轩东), WANG Hu (王虎), LI Xiaoang (李晓昂), ZHANG Qiaogen (张乔根), et al.. Estimation of Surface Roughness due to Electrode Erosion in Field-Distortion Gas Switch[J]. Plasma Science and Technology, 2013, 15(8): 812-816. DOI: 10.1088/1009-0630/15/8/18

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Estimation of Surface Roughness due to Electrode Erosion in Field-Distortion Gas Switch

1 School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China 2 Chengdu Electric Power Bureau, Chengdu 610041, China

Funds: supported by National Natural Science Foundation of China (Nos.50637010, 51207127)

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Received Date: August 25, 2011

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Abstract

Abstract

Field distortion gas switch is one of the crucial elements in a Marx generator, fast linear transformer driver and other pulsed power installations. The performance of the gas switch, which is dramatically affected by the surface roughness due to electrode erosion during the dis- charge process, directly influences the output parameters, stability and reliability of the pulsed power system. In this paper, an electrode surface roughness (ESR) calculation model has been established based on a great deal of experimental data under operating current. The discharge current waveform, the peak height of the burr, the radius and the depth of etch pits in the elec- trode erosion region were used to predict the ESR. Also, experimental results indicate that this calculation model can effectively estimate the ESR of the test gas switch.
- field-distortion gas switch,
- ESR,
- electrode erosion

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