Table of Contents
Advances in Power Electronics
Volume 2015, Article ID 654092, 11 pages
http://dx.doi.org/10.1155/2015/654092
Research Article

Comprehensive Analysis and Experimental Validation of an Improved Mathematical Modeling of Photovoltaic Array

1Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583
2Department of Electrical Engineering and Information Technology, ETH Zurich, Rämistrasse 101, 8092 Zurich, Switzerland
3Department of Electrical Engineering, Asian Institute of Technology, Pathumthani 12120, Thailand
4School of Computing, National University of Singapore, 13 Computing Drive, Singapore 117417

Received 26 August 2014; Revised 30 November 2014; Accepted 1 December 2014

Academic Editor: Jose Antenor Pomilio

Copyright © 2015 Satarupa Bal et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper proposes a simple, accurate, and easy to model approach for the simulation of photovoltaic (PV) array and also provides a comparative analysis of the same with two other widely used models. It is highly imperative that the maximum power point (MPP) is achieved effectively and thus a simple and robust mathematical model is necessary that poses less mathematical complexity as well as low data storage requirement, in which the maximum power point tracking (MPPT) algorithm can be realized in an effective way. Further, the resemblance of the P-V and I-V curves as obtained on the basis of experimental data should also be taken into account for theoretical validation. In addition, the study incorporates the root mean square deviation (RMSD) from the experimental data, the fill factor (FF), the efficiency of the model, and the time required for simulation. Two models have been used to investigate the I-V and P-V characteristics. Perturb and Observe method has been adopted for MPPT. The MPP tracking is realized using field programmable gate array (FPGA) to prove the effectiveness of the proposed approach. All the systems are modeled and simulated in MATLAB/Simulink environment.