Solar Powered Buck-Boost Converter with Different Structural Configurations

A comparative analysis is conducted to evaluate the performance of Conventional, Synchronous, and Bidirectional Buck-Boost converters, which are operated using a photovoltaic and energy storage system (PV-ESS). Bidirectional Buck-Boost converters commonly employed in Energy Storage Systems (ESSs) operate in the discontinuous conduction mode (DCM) to get zero-voltage-switching turn-on for switches. The typical converter operating in discontinuous conduction mode (DCM) exhibits significant fluctuations in both output voltage and current, resulting in diminished efficiency in power conversion. The performance of the Synchronous Buck-Boost converter is enhanced compared to conventional converters through the synchronous provision of gate pulses, which effectively addresses the challenges posed by the Discontinuous Conduction Mode (DCM). The voltage output is measured and compared for all the converters operating in both Open-loop and Closed-loop setups. The tracking of the maximum power point (MPP) in a bidirectional converter is accomplished through the utilization of the Perturb and Observe (P&O) algorithm.