Analysis and Modeling of Transformerless High Gain Buck-Boost DC-DC Converters

This paper proposes a transfomerless switched capacitor buck boost converter that is based on a traditional buck boost topology. The proposed converter achieves high voltage gain and higher efficiency when compared to the conventional buck boost converter. The average model based on state-space description is analyzed in the paper. The simulation results are presented to confirm the capability of the converter to generate high-voltage ratios. The proposed converter is suitable for applications which require high step-up DC-DC converters such as DC micro-grids and solar electrical energy. Keywords—buck-boost converter; state-space description; averagedmodel; simulation.

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