Single Phase Photovoltaic System with Maximum Power Point Tracking

Abstract

Due to the increase in demand of electric energy, people are shifting towards renewable energy resources. Among the various renewable sources, solar power is growing at a faster rate due to its abundant availability. Solar panel characteristics show that the output power from the panel peaks only at one operating point. For extracting maximum power from the panel, tracking of the operating point has to be done continuously by a control algorithm. In this work, a solar system connected to the grid is considered, where there is a necessity of synchronizing the solar inverter with the grid apart from MPPT. Hysteresis current control is implemented in the inverter for synchronization and for tracking the maximum power, perturb and observe algorithm is applied. Grid connected PV systems are used in main cities by domestic and industrial consumers, where the excess power can be sold to the utility. Simulation of the grid connected PV system is done in Simulink and the results are presented.