| 摘要 |
FIELD: power sources for arc welding with use of direct current. SUBSTANCE: converter includes main thyristors 1,2 and inverse thyristors 7,8 capacitors 3,4 of a resonance circuit, reactors 5,6 of the resonance circuit, transformer 9, rectifier 10 and capacitive-type smoothing filter 11. The inverse thyristors are connected mutually opposite and in parallel with the main thyristors and with windings of the reactor of the resonance circuit, connected in series with them. EFFECT: increased frequency of inverting process, lowered dimensions of reactor members, lowered pulsation of an output voltage and amplitude of current pulse of the main thyristors. 1 cl, 1 dwg |
