2002•Unpublished venueRequires access

Cyclic quasi-resonant converters: a new group of resonant converters suitable for high performance DC/DC and AC/AC conversion applications

J.G. Cho, G.H. Cho

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.>

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Key concepts: Converters, Chopper, Resonant inverter, Network topology, Power (physics), Topology (electrical circuits), Electronic engineering, RLC circuit