High-Gain Buck-Boost Converter Suitable for Renewable Applications

Abstract

This paper introduces a novel topology of buck-boost converter. In comparison to the traditional buck-boost converter, the voltage ratio of the proposed topology is high. Despite the high voltage gain of the quadratic buck-boost converters in step-up mode, the voltage ratio of the proposed converter in a specified duty cycle is approximately 2 times of the quadratic buck-boost converters in step up mode. Continuity of the input current is the other advantages of the proposed converter. Thus, the proposed topology is appropriate for renewable applications. Moreover, the output current of the proposed converter is continuous. The introduced topology is functioning in continuous current mode (CCM); hence, all principle operations and steady state analysis are discussed in CCM. Eventually, a simulation studies is carried out in PLECS to verify performances of the offered topology.