A simple and efficient MPPT scheme for PV module using 2-Dimensional Lookup Table

Abstract

An intermediate Maximum Power Point Tracking (MPPT) control algorithm is used to extract maximum power from the photovoltaic (PV) system. Among various traditional MPPT algorithms Perturb and Observe (P&O) is widely employed because of low cost and simple implementation. In P&O scheme, fixed step size perturbation consumes much time to track Maximum Power Point (MPP). Steady state power loss associated with P&O MPPT is high due to oscillations of operating point around MPP. To overcome the demerits associated with P&O scheme, this paper proposes a simple and efficient MPPT scheme using a 2-Dimensional Lookup Table. The results show that the proposed method has better steady state performance, accuracy and efficiency. Mathematical modeling of PV module, dc-dc converter and MPPT algorithms are given in detail.