Virtual Sensing of Photovoltaic Module Operating Parameters

Journal article (2020)

Authors

K. Lappalainen Tampere University
P. Manganiello Photovoltaic Materials and Devices - EEMCS , IMEC (Partner in EnergyVille)
Michel Piliougine University of Salerno
G. Spagnuolo University of Salerno
S. Valkealahti Tampere University
Research Group
Photovoltaic Materials and Devices (EEMCS) (TU Delft)
Parameters identification Diagnosis Condition monitoring Photovoltaic (PV) systems
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Published Date

2020-5

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

Photovoltaic Materials and Devices

Abstract

The single diode equivalent circuit allows describing photovoltaic panels behavior quite accurately. The values of the five parameters appearing in this model are usually identified in standard test conditions, at which irradiance and temperature values are given. Instead, when this identification has to be performed on field, suitable environmental sensors are required. In this article, a procedure for the on-site identification of the single diode model parameters as well as of the working irradiance and temperature conditions is presented. The procedure operates only on the measured panel current versus voltage curve, or on a part of it around the maximum power point, and does not need any other input data. A consolidated identification algorithm, effectively running on any embedded system for on-site application, is used. The proposed procedure is validated through a large number of experimental measurements acquired in two different geographic locations.

Files

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