Title :
Zero-voltage and zero-current switching full bridge DC-DC converter for arc welding machines
Author :
Jeon, Seong-Jeub ; Cho, Gyu-Hyeong
Author_Institution :
Dept. of Electron. Eng., Pukyong Nat. Univ., Pusan, South Korea
fDate :
6/24/1999 12:00:00 AM
Abstract :
A new zero voltage and zero current switching (ZVZCS) full bridge DC-DC converter with transformer isolation is proposed for arc welding machines. The proposed DC-DC converter uses an auxiliary transformer to obtain ZCS for the leading leg, which provides load current control capability even under short circuit conditions. The power rating of the auxiliary transformer is /spl sim/10% or more of the main transformer. The operation is verified by experiments.
Keywords :
DC-DC power convertors; 10 kW; arc welding machines; auxiliary transformer; full bridge DC-DC converter; load current control capability; transformer isolation; zero-current switching; zero-voltage switching;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990719
