Evaluating of peak power of Photovoltaic modules using EL image.

Abstract

Reused photovoltaic modules are required to demonstrate their quality and performance as products by evaluation IV performance, EL performance, visual inspection, and insulation performance. However, it is necessary to use dedicated measuring instruments for each quality assessment witch this tends to increase installation costs and maintenance costs. It increased cost of the quality evaluation process is contrary to the advantage of reused products, which is that they can be introduced at a low cost. Therefore, there are concerns about price of reused photovoltaic modules will increase and uncontrolled quality products are exported out of the country.

We have studied a method that makes it possible to estimate peak power by analyzing EL images. This will establish a method that does not require "IV measurement equipment," which is the most expensive equipment to install and operate.