Contribution à l’étude théorique du comportement d’un système hybride (éolien- photovoltaïque- diesel) de production d’électricité sans interruption

Actuellement, Le générateur diesel est la technique la plus utilisée pour l’électrification des sites isolés. Néanmoins, l’accès à ces sites étant généralement long et difficile, les coûts de maintenance et d’approvisionnement en carburant sont très élevés. En conséquence, nous avons envisagé de coupler – au sein d’un système hybride - un générateur diesel avec deux sources d’énergies renouvelables (éolien-photovoltaïque) qui représente alors souvent l’option la plus économique. Cependant, notre étude porte sur l’alimentation d’une habitation, qui peut être situe sur différents sites Algériens, par le système hybride avec stockage électrochimique. Dans un premier temps, nous nous sommes basés sur la modélisation détaillée des composantes du système, puis sur l’ensemble du système. Ainsi, nous avons appliqué les modèles et dimensionner le système ce qui nous a permis d’aboutir aux meilleures performances.Mots-clés : système éolien, système photovoltaïque, générateur diesel, systèmehybride, système de stockage, la charge, dimensionnement

Economic and technical study of a hybrid system (wind-photovoltaic-diesel) for rural electrification in Algeria

This paper deals with design of hybrid energy system consisting of wind and photovoltaic with battery storage. A diesel generator is added to ensure continuous power supply and to take care of intermittent nature of wind and photovoltaic. The paper reports results of the technical-economic optimization study of photovoltaic/wind/diesel hybrid with battery storage in Algeria. The primary objective of this study is to estimate the appropriate dimension of stand-alone hybrid photovoltaic/wind/diesel with battery storage that guarantee the energy autonomy of typical remote consumer with lowest cost of energy. A secondary aim is to study the impact of renewable energy potential quality on the system size. The optimum dimensions of the system are defined for six sites in Algeria. In this context, a complete sizing model is developed in Matlab/Simulink V.6.5, able to predict the optimum system configuration. The simulation results indicate that the hybrid system is the best option for all the sites considered in this study. Thus, it provides higher system performance than photovoltaic or wind alone. It s shown that the principal advantage of photovoltaic/wind/diesel hybrid with battery storage are used all together, the reliability of the system is enhanced. The economic analysis has resulted in the calculation of kWh cost of energy for different types of resources and optimized cost of hybrid energy system. It s revealed too that the energy cost depends largely on the renewable energy potential quality. So, our objective for the optimization parameters is not the production cost but the offered service.Hybrid systems Modelling Simulation Rural electrification

Simulation of offshore wind turbine link to the electric grid through a four-level converter

This paper is on the modulation of offshore wind energy conversion systems with full-power converter and permanent magnet synchronous generator with an AC link. The drive train considered in this paper is a threemass model which incorporates the resistant stiffness torque, structure and tower, in the deep water, due to the moving surface elevation. This moving surface influences the current from the converters. A four-level converter is considered with control strategies based on proportional integral controllers. Although more complex, this modulation is justified for more accurate results

Comparison of Energy Performance and Static Loads on a Building Integrated Wind, Solar, and Rainwater Harvester

In recent years, sustainable energy and green buildings are developed as important issues. Many helpful systems were developed to profit from advantages of different renewable energy sources. However, the research on disadvantages of sustainable energy systems is very rare and papers focus on only economic issues. In this paper, an innovative building integrated wind, solar, and rainwater harvester (WSRH) system was analyzed by nonlinear static pushover (NSP) analysis. The results are compared in terms of energy performance and its effects on the structural system. © Springer International Publishing Switzerland 2014