Title :
Comparative study of electronic transformers using resonant and nonresonant switching converters
Author :
Huh, Dollg Y. ; Sung, Hwan H. ; Cho, Gyu H.
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
fDate :
29 Jun-3 Jul 1992
Abstract :
Five different topologies for AC choppers are studied. Among them are the soft switching power converters ZCS (zero current switching) QSRC with three switches, half-bridge ZCS QSRC, ZVS (zero voltage switching) step down converter with two switches, and ZVS step-down converter with small current ripple. They are applicable to AC choppers requiring four-quadrant operation. The two-step driving-down converter has the lowest current ripple and acceptable switching loss and is the most suitable for implementing a small, lighter, and more economical high-power system (>1 kVA)
Keywords :
choppers (circuits); power convertors; power transformers; switching circuits; AC choppers; ZCS; ZVS; current ripple; electronic transformers; four-quadrant operation; power transformers; soft switching power converters; step down; switching loss; zero current switching; zero voltage switching; Choppers; Circuit topology; Power generation economics; Resonance; Switches; Switching converters; Switching loss; Transformers; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1992. PESC '92 Record., 23rd Annual IEEE
Conference_Location :
Toledo
Print_ISBN :
0-7803-0695-3
DOI :
10.1109/PESC.1992.254745
