Title :
Comparison of numerical simulations of plasma behavior of high-current arcs in axial magnetic fields (AMF) with optical observations
Author :
Schade, E. ; Shang, W. ; Shmelev, D. ; Kleberg, I.
Author_Institution :
Asea Brown Boveri Corp. Res., Baden, Switzerland
Abstract :
Computer simulations of light emission emitted side-on of diffuse and of diffuse columnar arcs are compared with high-speed video recordings. ne test setup consists of AMF contacts. Main current pulses of 15 kA and 28 kA (peak value of sinusoidal 50 Hz half wave) followed after the gap was fully open. During gap opening a pre-current of 15 A was used. The optical observation of the arc occurred side-on under two different viewing directions, perpendicular to each other. The computer images reproduce typical trends as e.g. stronger light intensities in front of the cathode caused by the higher plasma densities in this region.
Keywords :
CCD image sensors; cathodes; digital simulation; electrical contacts; physics computing; plasma diagnostics; television applications; vacuum arcs; 15 A; 15 kA; 28 kA; 50 Hz; AMF contacts; arc side-on observation; cathode; computer images; computer simulations; current pulses; diffuse arcs; diffuse columnar arcs; gap opening; high current vacuum arcs; high-speed video recordings; higher plasma densities; light emission; light intensities; optical observation; pre-current; sinusoidal half wave; Computer simulation; High speed optical techniques; Magnetic fields; Numerical simulation; Optical pulses; Optical recording; Plasma simulation; Stimulated emission; Testing; Video recording;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2002. 20th International Symposium on
Print_ISBN :
0-7803-7394-4
DOI :
10.1109/ISDEIV.2002.1027406
