PERFORMANCE OF PHOTOVOLTAIC MODULES WITH WHITE REFLECTIVE BACK SHEETS

摘要

We study the effect of the white rear sheet located around photocells in photovoltaic modules. This white sheet reflects part of the incident light back to the photocell by means of internal reflections, thus increasing the production of electrical current with a low additional cost. We have developed a software program that simulates a simple module with once cell in order to obtain the improvement of electrical current production as a function of the width of the white strip surrounding the cell. We find that the wider the white sheet around the photocell, the greater the increase of electrical current generated in it. These results will help to the optimization of the design of solar panels. We obtain a good agreement when comparing our simulation results with measurements carried out in a real prototype.