Title :
Electronic welder with high-frequency resonant inverter
Author :
Malesani, L. ; Mattavelli, P. ; Rossetto, L. ; Tenti, P. ; Marin, W. ; Pollmann, A.
Author_Institution :
Padova Univ., Italy
Abstract :
A new generation of electronic welders, incorporating soft-switched inverters driving high-frequency transformers, is presented. They are light, reliable, and flexible, and offer good efficiency, fast response, and control robustness. A control strategy able to ensure correct operation in any load and supply condition, small stand-by loss, and automatic recovery from line failures is discussed. Experimental results on an industrial prototype rated for 80 V (no-load voltage), 130 A (full-load current), and 80 kHz switching frequency are presented
Keywords :
circuit resonance; electric welding; high-frequency transformers; invertors; power transformers; switching circuits; 130 A; 80 V; 80 kHz; HF; control strategy; efficiency; high-frequency resonant inverter; high-frequency transformers; response; robustness; soft-switched; switching frequency; Automatic control; Electrical equipment industry; Lighting control; Prototypes; Resonant inverters; Robust control; Switching frequency; Transformers; Voltage; Welding;
Conference_Titel :
Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-1462-X
DOI :
10.1109/IAS.1993.299031
