The Paton Welding Journal, 2010, №09



2010 №09 (02)

2010 №09 (04)

---

TPWJ, 2010, #9, 15-19 pages
 
ANALYTICAL STUDY OF CURRENT CONTROLLER OF POWER SOURCE FOR MICROPLASMA WELDING


Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                       0957-798X (print)
Issue                       № 9, 2010 (September)
Pages                      15-19
 
 
Authors
V.S. GVOZDETSKY
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
An area of stable converter operation as regards arc voltage was determined. Dependence of the converter coefficient current amplification on its efficiency, voltage of power supply unit and arc voltage drop was established. An analytical dependence of arc current on arc voltage drop, voltage of power supply unit and switching frequency was found. The necessity of application of ferrite core in a choke, inductance of which decreases with current increase, was shown. The need for buffer capacitor was substantiated.
 
 
Keywords: microplasma welding, plasmatron, plasma, plasma plume, arc voltage drop, transistor module, snubber, inductance, choke, buffer capacitor, switching frequency
 
 
Received:                ??.??.??
Published:               28.09.10
 
 
References
1. Korotynsky, A.E., Makhlin, N.M., Bogdanovsky, V.A. (2002) About design of electronic controllers of welding current for multistation welding systems. The Paton Welding J., 12, 16-24.
2. Kunkin, D.D. (2008) System for TIG welding process control of low-thickness steels. Ibid., 12, 12-14.
3. Pilinsky, V.V. (1985) Source of secondary power supply with transformatorless output for electronics. Kiev: KPI.
4. (1979) Microplasma welding. Ed. by B.E. Paton. Kiev: Naukova Dumka.

---