Title :
Cyclic quasi-resonant converters: a new group of resonant converters suitable for high performance DC/DC and AC/AC conversion applications
Author :
Cho, Jung G. ; Cho, Gyu H.
Author_Institution :
Dept. of Electr. Eng., Korea, Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
The conventional resonant switch and quasi-resonant converters (QRCs) are generalized with regard to the viewpoint of a switch cell. A new resonant switch and a new family of resonant converters, the cyclic resonant switch (CRS) and cyclic quasi-resonant converters (CQRCs), are proposed as a part of the generalized topologies of QRCs. The CQRCs show very simple operation and easy control and analysis. They overcome the limited control range characteristics of the conventional QRCs and they can be applied for an AC chopper as well as a DC/DC converter. Steady-state operations and characteristics of the buck-type CQRC are analyzed and verified experimentally for a 200 kHz, 1 kW power level
Keywords :
choppers (circuits); frequency control; power convertors; 1 kW; 200 kHz; AC chopper; DC/DC converter; buck converters; control; cyclic quasi-resonant converters; cyclic resonant switch; frequency control; resonant converters; Analog-digital conversion; Choppers; Circuit topology; Degradation; Pulse width modulation; Pulse width modulation converters; Resonance; Switches; Switching circuits; Switching converters;
Conference_Titel :
Industrial Electronics Society, 1990. IECON '90., 16th Annual Conference of IEEE
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-87942-600-4
DOI :
10.1109/IECON.1990.149268
