The EU Joint Research Center (JRC) has updated the nuclear technology of the photovoltaic geographical information system with the aim of displaying the dominance of crystalline Silicium-Zonne technologies about thin-movies in the worldwide energy market.
A research group led by scientists from the Joint Research Center (JRC) from the European Commission in ISPRA, Italy, has updated the Power Performance Model (PPM) with recent developments in PV technology.
The PPM is the core of the European Commission’s photovoltaic geographical information system (PVGIS), a web application with which users can estimate the global PV production.
“The original calibration of the PPM coefficients for crystalline silicon (CSI) modules was reported in 2011. Values for the coefficients for copper indium diselenide (CIS) and Cadmium Telluride (CDTE) module technologies, with only small modifications, continued to use the team. “Nevertheless, the PV production sector has made remarkable progress in recent years, both in terms of volumes and the efficiency of energy conversion.”
To re-calibrate the PVGIS results for the new developments, the scientists used up-to-date Power Matrix data sets produced by the European Solar Test Installation (ESTI). They have included seven CSI examples -Four using PERC technology, two with Back Contact (BC) design and one with heterojunction (HJT) architecture. They also include three CIS modules and two CDTE panels.
“For each module, a matrix of power test data has been measured in an indoor solar simulator according to IEC 61853-1, which is punished of 100, 200, 400, 400, 600, 800, 1000 and 1.100 W/m2 and temperature of 15 C, 50 ° C and 75 C,” Explanation of the Panels.
Finally, these results were normalized with the help of standard testing conditions (STC) and then appropriate in the existing PVGIS capital performance model using the least-quarter procedure.
“The results show that the PVGIS capital performance model with updated coefficients can give a good description of the power of the modern CSI modules, with an average absolute bias error (MABE) of less than 1% in almost all cases, against a MABE of more than 3.5% with the current coefficients.” “Because of the updated coefficients, the model can better capture the improved temperature coefficients and performance with little light.”
The analysis showed that, in the case of CDTE, the MBAE of the updated models was almost 2.8%, while in the original case it was 4.9%. As far as CIS is concerned, the updated MBAE was 1.65%compared to the original 3.7%.
The calculations also showed that the annual DC energy yield was increased compared to that obtained with the current model with between 1.8% and 4.9% for five of the six reference skills specified in the IEC 61853-4 standard. The only exception was the high -lying climate case, which showed a revenue reduction of −0.9%.
The updated model was presented in “An updated simplified energy yield model for recent photovoltaic module technologies“Published in Progress in photovoltaic. Researchers from the Joint Research Center (JRC) of the European Commission in Italy, Italy and the German University of Göttingen have contributed to the study.
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