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

Volume

2

fYear

1995

fDate

18-22 Jun 1995

Firstpage

723

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1995. PESC '95 Record., 26th Annual IEEE

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-2730-6

Type

conf

DOI

10.1109/PESC.1995.474898

Filename

474898