Comparison between current-driven resonant converters used for single-stage isolated power-factor correction

The aim of this paper is to analyze the power-factor-correction capability of isolated current-source resonant converter topologies with two energy st orage elements, which takes advantage of the leakage inductance of the HF t ransformer. These converter topologies are studied and modeled Computer sim ulation results are also given. Thanks to its interesting characteristics, a converter topology is chosen and a converter prototype is built in order to validate theoretical study. Using this converter topology, a very good p ower factor is achieved.