Effect of a Thermal Nonlinear Absorption Coefficient on the Dynamics of a Photovoltaic Panel

Abstract

In this article, we propose a theoretical study of the effect of a thermal nonlinear absorption coefficient on the dynamics of a photovoltaic (PV) panel. This coefficient is expressed as a quadratic function of temperature of a PV module known as active zone of a PV panel. Based on the energy balance at each layer of a PV panel, the mathematical expressions of the temperature on each layer are derived. A comparative study of the thermal behavior of a PV panel for a constant and nonlinear coefficient is made, thanks to the numerical investigations carried out in the MATLAB environment. We reveal that, this nonlinear absorption coefficient induces the cooling of a PV panel as a whole, and optimize the electrical efficiency of a PV panel around 2.5%.

Numerical Optimization of a Tandem Solar Cell based on InxGa1-xN

“…Thus, because of its low efficiency, researchers paid a lot of attention to it and achieved an efficiency of 20 %. However, this efficiency is still insufficient, and therefore several optimization techniques such as doping [1], non-linearity [2][3][4], the use of ferromagnetic material [5] to name a few have been exposed in detail. Some authors have explored how to change the bandgap energy of material in the vein to improve the spectral sensitivity of the solar cell.…”