ModellIng and Simulation of a Photovoltaic System with MPPT Controller

Abstract

Today with the growing demand for the Renewable energy, the demand for the PV power has been increased more due to its plenty of availability and easy controllability. The most important thing in the PV system designing is efficient conversion of solar energy into electrical energy and cost reduction. This work proposes modelling and simulation of a photovoltaic system. In this work the utilization of a three-diode model of a PV solar cell using voltage controlled resistors is highlighted. This model also calculates the series and shunt resistance by efficient iterative method and simulates the effects of various parameters such as temperature, irradiance. To reduce simulation time, the input parameters are limited to few. Based on the available information from the PV module datasheet the developed model allows the user to predict PV cell’s current-voltage and power-voltage characteristics curve by varying sunlight, cell temperature and series resistance value. To operate the panel at its maximum power point, Perturb and Observe algorithm is applied to generate the controlled gate pulse for the Boost converter. The characteristics curves obtained by the simulation of different models are matched with the data provided by manufacturers with respect to the changing values of above mentioned internal parameters.