A Behavioral Model for Solar Cells With Transient Irradiation and Temperature Assessment

Victor Rodolfo Gonzalez-Diaz,Gerardo Mino-Aguilar,Franco Maloberti,Edoardo Bonizzoni,Roberto C Ambrosio-Lazaro,Sergio Romero-Camacho

doi:10.1109/access.2019.2927364

Abstract

The time to market of maximum power point tracking circuits for solar cells depends on the time of transient simulations. But, the traditional tools use a nonlinear resistor model for the solar cells. The question is if it is possible to use another nonlinear relationship to improve the convergence features. This paper presents a new method for modeling a solar cell, considering temperature and irradiation changes and an improved convergence performance. In this model, the solar cell's current-voltage (I-V) characteristics for three irradiation and two temperature conditions are required, showing a feasible procedure. The proposed model is fitted to three commercial solar cells exhibiting a maximum average error of 2.51 percent. It is tested in a transient analysis converging to the expected values in a maximum power point tracking circuit.

Highlights

Solar cells are important elements for the electronic circuit design flow
It is not easy to construct a compatible solar cell model for low average error considering irradiation and temperature changes. For this limitation arises the need to explore the construction of solar cell models
The solar cells are simulated with Spectre in Cadence Virtuoso to compare with physical data extracted from PV array blocks in Matlab-Simulink

Summary

Introduction

Solar cells are important elements for the electronic circuit design flow. There are industrial software tools to design Photo-Voltaic (PV) systems [1]. Some of the most important Computer Aided Design (CAD), for electronic circuit design, tools [2] do not include solar cells with the basic elements in the library setup. In these design platforms, it is not easy to construct a compatible solar cell model for low average error considering irradiation and temperature changes. It is not easy to construct a compatible solar cell model for low average error considering irradiation and temperature changes For this limitation arises the need to explore the construction of solar cell models. Of the most recent and relevant solar cell models, it is possible to highlight three features: F1) the model considers irradiation (L) and temperature (T) changes, F2) uses linear functions to describe physics and F3) an extensive characterization to calculate implicit parameters

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Conclusion