Modeling of the I–V curves of the PV modules using linear interpolation/extrapolation

Translation of the I–V curves of solar cells and modules for irradiance G and device temperature T is investigated. A new translation procedure based on the linear interpolation/extrapolation is proposed, in order to translate the I–V curves to target conditions of G and T. The accuracy of the method is investigated based on the indoor and outdoor experimental I–V curves of various kinds of photovoltaic (PV) cells and modules. The calculated the I–V curves over a wide range of G and T well agree with experimental results for various kinds of PV cells and modules. These results indicate that the translation of the I–V curve based on the method is effective for estimating the performance of the PV devices under various climatic conditions.