Polynomial computational method tracking MPP using enhanced PV diode model

This paper presents a simple computational method for engineers and researchers seeking maximum power points under different climatic conditions. This computational method has been proposed by the polynomial generic equation for electrical parameters related to maximum power points (MPPs), which are named respectively; power, voltage, and current values. This method has been applied to specific photovoltaic mono-crystalline type named shell SP-70. In this regard, an accurate modeling of PV is highly required to track MPPs. The shell SP-70 has been modeled in the ideal case study. In addition, a practical case by using an enhanced PV diode model (EPVDM) that has been brought out through an algorithm with more enhancements for the extraction of solar module parameters. The parameters obtained by this EPVDM have been verified with experimental results and other model types presented by others. Detailed studies have been carried out for a polynomial computational method (PCM) which is based on two stages; built-up matrix data about PV SP-70 at ideal and practical cases. Then, curve fitting technique has been applied to generate mathematical equations of PCM in third and fifth orders.