Simulation of the Incremental Conductance Algorithm for Maximum Power Point Tracking of Photovoltaic System Based On Matlab

Parween R.Kareem

doi:10.24237/djes.2019.12105

Abstract

Due to the urgent need to make maximum use of electrical power generated from the Photo-Voltaic System (PVS) solar panels, several techniques have been developed for this purpose. Maximum Power Point Tracking (MPPT) algorithm raises the efficiency of PVS’s. Simulation of the complete (PVS) possesses the ability of MPPT is present in this paper. The approved PVS consists of a PV array, DC-DC Boost Converter and MPPT algorithm using Incremental Conductance Method (INC). All parts of the system were simulated programmatically using MATLAB. The obtained Results showed the efficiency of the algorithm used to extract the maximum power regardless of changes in solar radiation and cell’s temperature

Highlights

Due to the worsening of global warming and environmental changes as a result of increased greenhouse gas emissions since the beginning of the Industrial Revolution; as well as a decrease in traditional energy resources such as coal and oil and gas; On the other hand, increasing world demand for energy due to increased population density; become necessary to look for alternative sources of energy [1, 2, 3]
In order to avoid ambiguity in the term of tracking, it is necessary to distinguish between the panel tracking and Maximum Power Point Tracking (MPPT), Panel tracking is driven by the system of moving and tracking the sun itself, This system depends on a set of sensors that track the daily movement of the sun; and a motor that moves the panels so that they face the disk of the sun, achieves the greatest solar radiation from the sun on the panels [8]
Due to the changes in temperature and radiation through the day, D.C voltage obtained from PV module was inconstant; it is converted into a regulated voltage using boost D.C-D.C converter to raise the output voltage [10].tracking of the maximum power point is a load matching trouble .DC to DC power converter is wanted for the match the panel’s input resistance with the load resistance by modifying the duty cycle [11]

Summary

1.Introduction

Due to the worsening of global warming and environmental changes as a result of increased greenhouse gas emissions since the beginning of the Industrial Revolution; as well as a decrease in traditional energy resources such as coal and oil and gas; On the other hand, increasing world demand for energy due to increased population density; become necessary to look for alternative sources of energy [1, 2, 3]. Solar energy can be converted into electric power according to the photovoltaic conversion mechanism. Photoelectric conversion is intended to convert solar or optical radiation directly into electrical energy by photovoltaic cells. In order to avoid ambiguity in the term of tracking, it is necessary to distinguish between the panel tracking and MPPT, Panel tracking is driven by the system of moving and tracking the sun itself, This system depends on a set of sensors that track the daily movement of the sun; and a motor that moves the panels so that they face the disk of the sun, achieves the greatest solar radiation from the sun on the panels [8]. The second system is MPPT, it is a tracking device that has nothing to do with moving the panel, While it is using an electronic system working to change an electrical operating point [7].

Modeling of Photovoltaic Cell

DC-DC Power Converter

Conclusions