Matching of PV Power Systems with Electrical Loads Using Graph Theoretic Modeling Approach.

Document Type : Research Studies

Authors

1 Electrical Power & Machines Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt

2 Electrical Power & Machines Department., Faculty of Engineering,El- Mansoura University., Mansoura., Egypt

3 Egyptian Elect. Holding Company Zagazig., Egypt

Abstract

The quality of load matching in a photovoltaic power system (PVPS) determines the system performance and the degree or the solar cells utilization. In a good matched system, the operation of the load-line is close to the maximum power-line of the solar cell (SCA) generator. This paper presents a new methodology for modeling a stand alone PVPS using the Graph Theoretic Modeling (GTM) Approach. The studied system composed of a directly connected SCA generator-dc motor supplying different load types. A computer program (written in MATLAB 6) has been developed to model the studied system. The computer program is then applied to nine case studies for different types of dc-motors and various mechanical loads. A comparison between these cases is introduced to indicate the appropriate motor type for each load. 

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