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The demand for photovoltaic (PV) energy has been growing in recent years, parallel to an increase in scientific research about the PV cells, such as the electrical modelling and extraction of unknown PV model parameters. This paper introduces a highly efficient and straightforward numerical method to determine the unknown parameters for the single-diode model. The proposed approach utilizes Dichotomy (Bisection) to estimate the series resistance Rs and an iterative process to determine the diode ideality factor a and the parameters that achieve the minimum Root Square Error (RMSE). The proposed approach has been tested on five cells/modules from different technologies. The results show that the proposed approach outperforms various analytical, numerical, and meta-heuristic approaches in terms of accuracy. The RMSE produced by the proposed method is in order of 7.8514e-04 A and 2.2256e-03 A for the RTC France cell and the PWP201 module, respectively.
Elhammoudy et al. (Tue,) studied this question.