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A Simple Photovoltaic Panel Model: Characterization Procedure and Evaluation of the Role of Environmental Measurements

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4 Author(s)
Loredana Cristaldi ; Dipartimento di Elettrotecnica, Politecnico di Milano, Milano, Italy ; Marco Faifer ; Marco Rossi ; Ferdinanda Ponci

The growing number of installed photovoltaic (PV) plants is making the simulation of their behavior and their effects on the power network more and more relevant. In this context, an accurate yet simple model of the panels is beneficial for evaluating the power production as well as the system efficiency in off-line and on-line analysis. In the preliminary design stages of large plants, this kind of model can support design and decision making, allowing for the simulation of the entire plant and the testing of various power architectures. During the operation, such models may support monitoring, diagnostic, and control functions. In this paper, a model of PV panel, suitable for the aforementioned applications, is presented together with a simple procedure for the identification of its parameters. The critical issues related to the measurement and the estimation of the required environmental quantities are analyzed together with their main metrological requirements. Finally, the experimental validation of the proposed model and algorithms is presented using as a case study the estimation of the energy production of a domestic solar plant.

Published in:

IEEE Transactions on Instrumentation and Measurement  (Volume:61 ,  Issue: 10 )