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Energies 2017, 10(7), 998;

Low-Cost Solar Irradiance Sensing for PV Systems

Department of Electrical Engineering, University of Colorado Denver, Denver, CO 80217, USA
Department of Engineering, Università degli Studi Roma Tre, 00149 Roma, Italy
Author to whom correspondence should be addressed.
Academic Editor: Enrico Sciubba
Received: 18 January 2017 / Revised: 3 July 2017 / Accepted: 10 July 2017 / Published: 14 July 2017
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Determination of solar irradiance is a critical asset to ensure efficient working conditions for a photovoltaic (PV) system. This work analyze the feasibility of assessing solar irradiance on a PV device assuming the knowledge of the device temperature and the voltage/current operating point. This work proposes an approach based on a manipulation of the analytic expressions found in the reduced form of the “single diode” circuit model for a silicon PV device. The approach was validated through different practical experiments, and the results obtained are comparable to the ones of a commercial instrument for irradiance sensing. The ease of construction and the reduced costs involved make a device based on the proposed approach suitable for large-scale integration in a PV plant. View Full-Text
Keywords: parameter estimation; photovoltaic power systems; renewable energy; solar radiation parameter estimation; photovoltaic power systems; renewable energy; solar radiation

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Carrasco, M.; Laudani, A.; Lozito, G.M.; Mancilla-David, F.; Riganti Fulginei, F.; Salvini, A. Low-Cost Solar Irradiance Sensing for PV Systems. Energies 2017, 10, 998.

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