On the dynamics of cutting arc plasmas: the role of the power supply ripple

被引：2
作者：
Prevosto, L. [1 ]
Mancinelli, B. [1 ]
Kelly, H. [1 ,2 ]
机构：
[1] Fac Reg Venado Tuerto UTN, Dept Ingn Electromecan, Grp Descargas Elect, Laprida 651, RA-2600 Venado Tuerto, Santa Fe, Argentina
[2] Fac Ciencias Exactas & Nat UBA, Dept Fis, CONICET, Inst Fis Plasma, RA-1428 Buenos Aires, DF, Argentina
来源：
ADVANCED ELECTROMAGNETICS | 2012年 / 1卷 / 02期
关键词：
D O I：
10.7716/aem.v1i2.35
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The power sources used in cutting arc torches are usually poorly stabilized and have a large ripple factor. The strong oscillatory components in the voltage and arc current produce in turn, large fluctuations in the plasma quantities. Experimental observations on the dynamics of the nonequilibrium plasma inside the nozzle of a 30 A oxygen cutting torch with a 7 % ripple level of its power source are reported in this work. The observed electron temperature (mean value approximate to 5400 K) shows a rms deviation approximate to 5 % (+/- 300 K), which is of the order of the arc voltage ripple level. A considerable different situation occurs with the plasma density ( mean value approximate to 3 x 10(19) m(-3)). In this case the rms deviation was approximate to 75 %, much greater than that of the electron temperature.
引用
收藏
页码：12 / 15
页数：4
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