LabVIEW Based Modelling System Applied in Maximum Power Point Tracking Techniques

Abstract

Photovoltaic is the process that converts the sunlight directly into electric power depending on irradiance and temperature. The monitoring system in photovoltaic power plants is very important to interface the whole system and critical in some cases for analyzing since it has to be in real-time for troubleshooting responses. This paper presents an analysis study of the photovoltaic modules based on LabVIEW which is one of the well known graphical programming environment known as a parallel programming as well. The main role of using LabVIEW environment to analyze the performance of the system is to be able to track the amount of energy which is produced by the photovoltaic system in real-time and to ensure the forecasted conversion efficiency for continuous power tracking most of the time. In this paper, the proposed modelling system is designed and implemented to analyze the performance of the applied perturbation and observation algorithm which provides the maximum power point tracking. Photovoltaic panel characteristics have been demonstrated based on LabVIEW environment using data acquisiton circuit. LabVIEW environment is a system design environment which has supportive tools which are used to create a multitude of the application in much less time using parallel programming language platform. The process of designing and analysing the system has been carried out in real time simulation using the designed electronic circuit. The obtained results from the system have been compared with a real sun-simulator device results and it was shown that they are very close to the existing datasheet results.