Optimal sizing design and energy maîagement of stand-alone photovoltaic/wind generator systems

Abstract

Presently, the photovoltaic (PV) and the rlind energies are the most important energetic alternative resowces. So far, a lot of researches are developed and conducted concerning the cost-optimally design and energy management for the stand-alone hybrid PV-wind generatot (WG) systerns. In this study, a methodology fbr optimal sizing design and shategy control based on dilTèrential flatness approach is applied to the h1ôrid stand-a1one PV-WG s\stems. The purpose is to find the optimal number of units ensuring that the 20 years round total system cost is minimizæd subject to the constraint that the load enerry requirements are completely covered. The optimization rnethodology, using the genetic algorithm and the fbrmulation of the problem are detailed. Finally, an optimal configuration is obtained with a lifetime of 20 years; also the results of the control algorilhm based on the flatness properties obtained under Matlab/Sirnulink are given.