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

作　　者：刘轩东 王虎 李晓昂 张乔根 危瑾 邱爱慈 

机构地区：[1]School of Electrical Engineering,Xi'an Jiaotong University [2]Chengdu Electric Power Bureau

出　　处：《Plasma Science and Technology》2013年第8期812-816,共5页等离子体科学和技术（英文版）

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

摘　　要：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 discharge 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 electrode 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 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 discharge 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 electrode 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.

关 键 词：field-distortion gas switch ESR electrode erosion 

分 类 号：TM564[电气工程—电器] TG84[金属学及工艺—公差测量技术]