Linearization of Photovoltaic Cell Single Diode Equivalent Circuit Model Using Piecewise Linear Parallel Branches Model and Findin Fill Factor

Authors : Suleyman Adak

Pages : 266-285

Doi:10.29130/dubited.1502554

View : 15 | Download : 24

Publication Date : 2025-01-30

Article Type : Research Paper

Abstract :In this article, the linearization and analysis of the Photovoltaic (PV) cell single diode equivalent circuit model have been performed. The diode element in the PV cell equivalent circuit model is a nonlinear component. The nonlinear PV cell single diode model has been linearized using the piecewise linear parallel branches model. In addition, the maximum power and fill factor (FF) of the PV cell have been determined based on the equivalent circuit parameters. Thevenin theorem was used in this analysis process. For this theorem to apply, the circuit must have a linear characteristic. The linearization of the nonlinear diode element has been achieved through the piecewise linear parallel branches model (PLPBM). In practice, the aim is to transfer the maximum power (Pmax) from the PV cell. Another important parameter of the PV solar cell is the FF. The FF is used to describe the general behavior of a solar PV cell. This factor is used to determine the quality of the solar PV cell. The FF provides information about the quality and efficiency of the solar cell. In a low FF scenario, the value of the series resistance is high, while the value of the parallel resistance is low. The FF of typical PV cells ranges between 50% and 82%. In the analysis conducted in the article, the FF of the PV solar cell was found to be 74%.
Keywords : Fill factor, Maximum power transfer, PV cell single diode equivalent circuit, Piecewise linear parallel branches model, Thevenin equivalent circuit