Accuracy comparison between Gompertz and polynomial based PV models

Abstract

Various photovoltaic PV models of different complexity exist in the literature. The modeling accuracy for most of them is directly related to their complexity and computational effort. Recently, two newly developed PV models featuring low computational effort and high accuracy appeared in the literature. The first model is developed based on Gompertz model which is originally used to model human mortality, and the second relies on a polynomial function which represents the voltage drop in the model series resistance. Because both models have similar features, their pros and cons are not clear and thus it is challenging for users to decide which model is more suitable for a particular PV application. This paper constructs a comparison between the two models showing their pros and cons. The results of the paper would be beneficial for PV system designers and researchers to select the appropriate model for a specific PV application.