Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Minimization of Welding Time for an AC Resistance Spot Welding System With 60㎐ Transformer
Authors Jin-Kyu Seok ; Sung-Kwan Kang ; Woong-Hyub Song ; 魯Eui-Cheol Nho ; In-Dong Kim ; Heung-Geun Kim ; Tae-Won Chun
DOI 10.6113/TKPE/2010.15.3.218
Page pp.218-225
ISSN 1229-2214
Keywords Resistance spot welding ; Micro spot welding
Abstract This paper deals with a method to minimize the welding time for an AC spot welding system. The spot welding system using a conventional SCR type circuit has a disadvantage of slow control speed and no precise current control. Therefore, recently, the using of inverter type welding system is increasing. Conventional welding machine adopts several tens of switching devices connected in parallel to obtain a huge current of several thousands ampere with a short welding time. This paper analyzed a welding system consisting with 4 IGBT switches for a full-bridge inverter and conventional 60 [㎐] transformer. The simulation and experimental results show the validity of the proposed method.