Autonomous Single-Phase Grid-Connected Photovoltaic System

Abstract

This paper proposes a simple and efficient controller for single-phase grid-connected photovoltaic system. The controller maintains the system operation at maximum power point at different levels of solar irradiance/temperature. A detailed design of the controller and the DC capacitor were carried out. An average-value model was developed to facilitate the design of the controller and to study the system performance under different operation conditions. The results were validated by rigorous simulation.