Advanced perturbation and observation (P&O) based maximum power point tracking (MPPT) of a solar photo-voltaic system

In this paper, a novel algorithm based MPPT has been suggested for extracting maximum possible power from PV module. The proposed algorithm for controlling the MPPT is based upon the mostly used Perturb and Observe (P&O) method. Along with the proposed algorithm, different existing algorithms have been compared in terms of their tracking speed and implementation complexity. The solar module characteristics (I-V and P-V) have been simulated in MATLAB. The simulation results for various parameters of boost converter have also been obtained. In this paper, we discuss the results of our study of an improved maximum power point tracker (MPPT) of a PV system. The proposed MPPT algorithm is based on the incremental perturbation and observation (IP&O) strategy in which the perturbation steps have been increased to get closer to the maximum power point with minimum possible oscillations. The PV power system, using the proposed MPPT, will be able to optimally track maximum power points with minimum possible oscillation around maximum power points (MPPs). Consequently the light to electricity conversion efficiency can be improved significantly.