Comparative study of some Maximum Power Point Tracking algorithms

Abstract

This paper presents a comparison study, under different solar irradiation and temperature, of Three most used Maximum Power Point Tracking (MPPT) methods for photovoltaic system (PV) power systems: Perturb and Observe (P&O) and Incremental Conductance (InCnd), as constant tracking step, and Fuzzy Logic (FL) based MPPT, as variable tracking step. Using identical PV, under strictly the same set of technical and meteorological conditions, a comparison of these Three algorithms is done. Following three criteria, Stability, Rapidity and energy efficiency, this comparison shows the advantage of the use of an MPPT with a variable tracking step. The extracted energies by all three methods are almost identical with a slight advantage for the FL algorithm.