Title :
A series resonant converter for arc striking applications
Author :
Roux, J.A. ; Ferreira, J.A. ; Theron, P.C.
Author_Institution :
Energy Lab., Rand Afrikaans Univ., Auckland Park, South Africa
Abstract :
Initiation of a plasma conduction state requires a relatively large voltage to ionise the gas. A new version of the series resonant power converter is identified which uses the magnetising inductance of the transformer for resonance. This power converter is not suitable for most power supply applications, but the unique load characteristics associated with plasma loads make this type of power converter well suited for arc striking, while allowing safe operation during the plasma state. Both these power converter characteristics are obtained with minimum controller complexity. The series resonant power converter is verified experimentally in a tungsten inert gas welding application
Keywords :
arc welding; arcs (electric); load (electric); power supplies to apparatus; power transformers; resonant power convertors; TIG arc welding; applications; arc striking; load characteristics; magnetising inductance; plasma loads; power supply; resonance; series resonant power converter; transformer; tungsten inert gas welding; Analog-digital conversion; Circuit topology; Current supplies; Diodes; Low voltage; Magnetic resonance; Plasma applications; Plasma properties; Plasma welding; Power supplies;
Conference_Titel :
Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-2730-6
DOI :
10.1109/PESC.1995.474898
