A Transformerless Quadratic Buck-Boost Converter Suitable for Renewable Applications

Abstract

This paper introduces a quadratic buck-boost converter with positive load terminal voltage. Compared to conventional buck-boost converter, the voltage ratio of the introduced topology is squared times of the conventional one. Broad span of the output voltage is one of the advantages of the introduced topology. The continuity of the input current makes this type of converters convenient for renewable energy sources. Continuous output current is another advantage of introduced converter, which decreases the current stress on the load terminal capacitor. Principle operations and steady state analysis are done in continuous current mode. Eventually, the implementation of the introduced topology is evaluated on simulation outcomes.