Design and Simulation of Grid Connected Photovoltaic system based on the MPPT Strategy

This paper presents the modeling & simulation of 250 KW grid connected Solar Power Plant on MATLAB. Renewable energy sources, such as solar and wind energy, provide clean, green and abundant energy. As the demand for power increases, so do power outages, so renewable energy can be used to continuously meet a constant load demand. Due to the environmental conditions, the photovoltaic generator is affected and the conversion efficiency becomes low, So a maximum power tracking known as MPPT technique is needed to detect the peak power in order maximize the energy produced. A grid-connected photovoltaic system that utilizes solar energy by converting sunlight into direct current using semiconductors, to be implemented by a fully distributed energy Resource system (DER). This project will include a photovoltaic module and will be monitored and optimized using the Maximum Power Point Tracking (MPPT) algorithm. This article uses the P&O MPPT formula. The P&O MPPT algorithm is based on calculating the PV output power and the power change by sampling the PV current and voltage. In this module, an isolation transformer is used to integrate the single-phase inverter into the grid. The switching of the boost converter and the operation of the single-phase inverter, as well as its integration into the grid, are controlled by PI controllers. A detailed mathematical and technical analysis of the simulated results will be followed using MATLAB software.