Control strategy for small-scale photovoltaic systems connected to single-phase grids

Abstract

This paper focuses on the powers control of a photovoltaic generator connected to a single- phase grid. In addition to the solar panels, the system is equipped with a dc-dc converter, which allows the panels' maximum power point to be tracked, a single phase inverter, a filter, and loads, all connected to a single phase utility grid. In this study, the voltage oriented control method is used to control the power injected into the grid during the daytime, taking into account the grid characteristics. Simulation results are shown for the analysis of performance of a grid-coupled PV system under solar radiation change.