Journal
ENERGIES
Volume 10, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/en10111869
Keywords
I-V curve; outdoor measurements; uncertainty analysis; characterization system
Categories
Funding
- Andalusian International Cooperation Agency (Agencia Andaluza de Cooperacion Internacional para el Desarrollo, AACID)
- University of Jaen
- Junta de Andalucia [P11-RNM-7115]
- FEDER (European Fund for Regional Development) funds by the EU
- Spanish Ministry of Economy and Competitiveness
- FEDER funds [ENE2016-78251-R]
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This article describes a complete characterization system for photovoltaic devices designed to acquire the current-voltage curve and to process the obtained data. The proposed system can be replicated for educational or research purposes without having wide knowledge about electronic engineering. Using standard calibrated instrumentation, commonly available in any laboratory, the accuracy of measurements is ensured. A capacitive load is used to bias the device due to its versatility and simplicity. The system includes a common part and an interchangeable part that must be designed depending on the electrical characteristics of each PV device. Control software, developed in LabVIEW, controls the equipment, performs automatic campaigns of measurements, and performs additional calculations in real time. These include different procedures to extrapolate the measurements to standard test conditions and methods to obtain the intrinsic parameters of the single diode model. A deep analysis of the uncertainty of measurement is also provided. Finally, the proposed system is validated by comparing the results obtained from some commercial photovoltaic modules to the measurements given by an independently accredited laboratory.
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