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Corresponding Author

Mohamed El-Sayes, Mohamed Adel

Subject Area

Electrical Engineering

Article Type

Original Study

Abstract

Integration of solar photovoltaic cells with wind turbine generators and utilizing them as stand alone renewable energy system for supplying the loads installed in the remote sites is the main subject of this paper. A suggested method is presented in this paper for determining:1- The design of the stand alone system:A. Types of numbers of wing turbine generators.Size of solar photovoltaic cells.Battery storage capacity.Rating of the required power conditioner.2- The price of the generated kilowatthour.These two items are essentially dependent upon:1- The characteristics of the site which are represented by:Solar radiation incident on the solar cellsWind speeds which affect the rotor blades of the wind turbine2- Load curve shape3- Costs and efficiencies of the elements consisting the system.This method permits estimation of the effect of these characteristics on the design and the energy unit price. Impact of any change in the price and efficiency of any element can also be computed.A numerical application is presented in this paper. This application demonstrates validity and accuracy of the proposed method. It illustrates also that by this method, the increase or decrease in kilowatt hour price due to present or future increase or decrease in cost of any element can be predicted. Impact of load curves shapes on the design and energy unit price is studied in details by taking five shapes of load curves with constant daily energy to facilitate the comparison, final executive results and recommendations are summarized at the end of this application.

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