Simulation and comparison between conventional and interleaved Buck-boost converter for grid-connected PV system

Abstract

This paper presents a mathematical modelling of buck boost converter used for grid-connected PV systems. It is related to the optimization of the first input stage of a grid tie inverter PV system. The interleaved buck-boost DC-DC converter is proposed to increase the performance of the entire system. The input current is shared between the inductors. As a result, the current ripples are reduced and a good reliability in power electronic systems is gained. The interleaved buck-boost converter is presented and compared in simulation.