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This paper proposes a method for modeling and simulation of photovoltaic arrays. The modeling method and the proposed circuit model are useful for power electronic designers who need a simple, fast, accurate, and easy-to-use modeling method to simulate the PV systems. The parameters extraction and the model evaluation are demonstrated using Matlab and Excel link as a new technique to facilitate input/output data of solar module simulink model such as weather conditions and solar module parameters. One-diode equivalent circuit is employed in order to investigate I-V and P-V characteristics of a typical 150W solar module. This model and new technique will be more recommended because the solar module parameters are obtained directly from manufactures catalogs.