Comparative study of Boost and Zeta converters in DC microgrid applications

Abstract

Different DC/DC converter configurations are proposed in order to enhance power quality, improve power conversion efficiency, reliability and reduce size and complexity of these converters. For a better understanding of these converter topologies, operating in a residential standalone DC microgrid, this paper proposes a comparative study between two non-isolated converters working in boost mode, for a DC microgrid system composed of photovoltaic and wind sources, storage device, EV charger and residential local loads. The first converter is a conventional boost converter and the second one a Zeta converter. Both converters behave as Constant Power Loads (CPL). Main simulation results are given and discussed to show the performances of both topologies. Simulations were performed using PSIM software.