Comparison of the Methods of Calculation of Measurements Standardization on the Outdoor Photovoltaic Modules
American Journal of Modern Physics
Volume 9, Issue 3, May 2020, Pages: 41-47
Received: Jan. 27, 2016;
Accepted: Feb. 3, 2016;
Published: Jul. 17, 2020
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Fatou Dia, Laboratory of Semiconductor and Solar Energy, Department of Physics, Faculty of Science and Techniques, University Cheikh Anta Diop, Dakar, Senegal
Oumar Absatou Niasse, Laboratory of Semiconductor and Solar Energy, Department of Physics, Faculty of Science and Techniques, University Cheikh Anta Diop, Dakar, Senegal
Bassirou Ba, Laboratory of Semiconductor and Solar Energy, Department of Physics, Faculty of Science and Techniques, University Cheikh Anta Diop, Dakar, Senegal
Cheikh Sene, Laboratory of Semiconductor and Solar Energy, Department of Physics, Faculty of Science and Techniques, University Cheikh Anta Diop, Dakar, Senegal
To compare the performance of PV modules, it was required to translate the measured I - V characteristics, to use certain standard conditions. The International Electrotechnical Committee (IEC) has defined the standard test condition (STC) for PV modules with 1000 W/m2 irradiance with AM 1.5 and 25°C module temperature. The IEC has also published some standard correction procedures (contained in IEC 60891) to translate irradiance and temperature values between different. IEC 60891 defines a procedure which helps to translate the measured I-V characteristics photovoltaic devices at standard test condition (STC). The IEC 60891 translation procedures can be applied only for the 20% variation in the irradiance, the irradiance should not be below 800 W/m2 for translation at STC but also for limit temperatures (35 ° VS). In our study we will use crystal technology and the temperature measurements carried out at the study site show temperatures varying from 55°C to 65°C. Data from tests in the wild has been converted to standard test conditions (STC) using four methods proposed by AJ Anderson and G. Blaesser, the combination method and the equations from international standard IEC 60891. These methods are compared using data from one year and the correlation between the measured data and the standardized data. The results demonstrated that the combination method has good precision in the STC conversion of the performance of the PV module under different climatic and technological conditions. Then, based on the investigation results of the conversion equations, these translation methods are distinguished by the type of solar cell technology and the field of application. There is a difference between in situ and natural tests, attributed to various factors but mainly to the mismatch between the spectral responses of the PV module and the reference solar cell. The combination method uses irradiance data and temperature and performance parameters under STC conditions of PV modules to predict the maximum output power. Therefore, it is essential to provide reliable weather data before designing photovoltaic power systems.
Oumar Absatou Niasse,
Comparison of the Methods of Calculation of Measurements Standardization on the Outdoor Photovoltaic Modules, American Journal of Modern Physics.
Vol. 9, No. 3,
2020, pp. 41-47.
K. Agroui et al; Indoor and outdoor photovoltaic modules Performances based on thin films solar cells, Revue des Energies Renouvelables Vol. 14 N°3 (2011) 469–480.
Kroposki, B., Emery, K., Myers, D., Mrig, L., 1994. A comparison of photovoltaic module performance evaluation methodologies for energy ratings. Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC) 1.
Osterwald, C., 1986. Translation of device performance measurements reference conditions. Solar cells 18 (3), 269–279.
Skoplaki, E., Palyvos, J. A., 2009. On the temperature dependence of photovoltaic module electrical performance: A review of effciency/power correlations. Solar Energy 83 (5), 614–624.
H. Nakamura, T. Yamada and T. Ohshiro, ‘Comparison between Estimation for I-V Curve in STC’, Proceedings in the 2nd World Photovoltaic Solar Energy Conference, Vienna, Austria, July, 6-10, 1998.
IEC 60904-1, Photovoltaic devices – Part 1: Measurements of photovoltaic current-voltage Characteristics, IS 12762 (Part 1): 2010 Photovoltaic devices: Part 1 Measurements of photovoltaic current-voltage characteristics (first revision), IEC 60904-1: 2006.
IEC 60904-2, Photovoltaic devices – Part 2: Requirements for reference solar devices IS 12762 (Part 2): 2013 Photovoltaic devices: Part 2 Requirements for reference solar devices (first revision), Identical to IEC 60904-2: 2007.
IEC 60904-7, Photovoltaic devices – Part 7: Computation of the spectral mismatch correction I S 12762 (Part 7): 2013 Photovoltaic devices: Part 7 Computation of the spectral mismatch correction for measurements of photovoltaic devices for measurements of photovoltaic devices, Identical to IEC 60904-7: 2008.
IEC 60904-10, Photovoltaic devices – Part 10: Methods of linearity measurement IS 12762 (Part 10): 2010 Photovoltaic devices: Part 10 Methods of linearity measurement, Identical to IEC 60904-10: 1998.
A. J. Carr and T. L. Pryor, ‘A Comparison of the Performance of Different PV Module Types in Temperate Climates’, Solar Energy, Vol. 76, N°1-3, pp. 285 – 294, 2004.
Skoplaki, E., Boudouvis, A. G., Palyvos, J. A., 2008. A simple correlation for the operating temperature of photovoltaic modules of arbitrary mounting. Solar Energy Materials and Solar Cells 92 (11), 1393–1402.
Van Dyk, E. E., Gxasheka, A. R., Meyer, E. L., 2005. Monitoring current-voltage characteristics and energy output of silicon photovoltaic modules. Renewable Energy 30 (3), 399–411.
Anderson, A., 1996. Pv translation equations a new approach. In: AIP Conference Proceedings. Vol. 353.
Malik, A., Chee, L., Sheng, T. K., Blundell, M., 2010. Influence of temperature on the performance of photovoltaic polycrystalline silicon module in the bruneian climate. ASEAN Journal Science and Technology Development 26 (2), 61–72.
Kenny, R. P., Dunlop, E. D., Ossenbrink, H. A., Mu¨llejans, H., 2006. A practical method for the energy rating of c-Si photovoltaic modules based on standard tests. Progress in Photovoltaics: Research and Applications 14 (2), 155–166.
A. Anderson, ‘Photovoltaic Translation Equation: A New Approach’, Final Subcontract Report, NREL/TP-411-20279, January 1996.
G. Blaesser, ‘On-Site Power Measurements on Large PV Arrays’, Proceedings of the 10th European Photovoltaic Solar Energy Conference, Lisbon, Portugal, 8-12 April, 1991.
Report IEC 60891, ‘1987’, ‘Procedures for Temperature and Irradiance Corrections to Measured I-V Characteristics of Crystalline Silicon Photovoltaic Devices’, Amendment 1, 1992.
B. Marion, B. Kroposki, K. Emery, J. del Cueto, D. Myers and C. Osterwald, ‘Validation of a Photovoltaic Module Energy Ratings Procedure atNREL’, Disponible sur ‘http://www.osti.gov/bridge/servlets/purl/909196-OO9pjo’.
Information on: http://www.socal-solar energy.com.
Ndiaye, A., Ke´be´, C. M. F., Charki, A., Ndiaye, P. A., Sambou, V., Kobi, A., 2014. Degradation evaluation of crystalline-silicon photovoltaic modules after a few operation years in a tropical environment. Solar Energy 103, 70–77.
Wenham, S. R., 2011. Applied photovoltaics. Routledg.