A fast and accurate five parameters double-diode model of photovoltaic modules

This paper proposes a fast and accurate method by utilizing combined analytical and numerical approach for determining the five parameters double diode model of PV modules. Only four parameters given by the PV manufacture's datasheets are used to develop proposed formulations. In order to reduce computational time, some approximations and simplifications have been applied for making analytical equations and calculations simpler and manageable. In addition, a rapid and accurate iterative numerical method is proposed for determining the value of series resistance R
S
. The effectiveness of the model is shown by comparing its accuracy and computational time, against popular modeling method for double diode model. It is envisaged that the proposed method can be useful for PV designers who require a fast and accurate approach for modeling of the photovoltaic modules.