Analytical and quasi-explicit four arbitrary point method for extraction of solar cell single-diode model parameters

摘要

In this paper, the five parameters of the solar cell single-diode model are analytical and quasi-explicitly extracted for the first time, just using the coordinates of four arbitrary points of the characteristic I-V, curve and the slopes of the curve in these points. The new method presented, called Analytical and Quasi-Explicit (AQE) method, is exact because no simplifications of the model nor a priori approximations of the parameters are used and, it is quasi-explicit in the sense that all the parameters except one are explicitly given. The unique parameter not explicitly computed is easily obtained by solving a five degree polynomial equation. Accurate and practical conditions are provided to select which solution of the previous equation is the desired parameter.