Tapia, Mariela (2015) Evaluation of Performance Models against Actual Performance of Grid Connected PV Systems. Masters, Carl von Ossietzky Universität.

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Evaluation of energy performance of grid connected photovoltaic systems is a critical task during project design. In this assessment the common practice is to use modeling software tools that provide an estimated performance of the system and calculate the expected energy yield considering the location and system design specifications. The aim of this research was to understand and evaluate the modeling process in PVsyst v6.25. This study presents a comparison of the real performance of six grid connected PV systems located in Spain, Italy and Chile with their modeled performance using PVsyst. Five systems were fixed structure and one with tracking system. Only systems equipped with crystalline silicon PV modules were evaluated. On an annual basis PVsyst was found to underestimate the energy yield in almost all the studied cases, except in the case of the tracking system. For the system in Chile, the measured data was at high resolution and included the irradiation in the plane-of-array and array temperature allowing a better comparison. In this case, the total relative error between the modeled and measured energy yield in the evaluated period was –0.74%, showing that for this particular system the modeled performance matched the measured output with high accuracy.

Item Type: Thesis (Masters)
Uncontrolled Keywords: photovoltaic systems, energy yield, modeling tools, simulation, PVsyst, system performance
Subjects: Science and mathematics > Physics
Technology, medicine, applied sciences > Engineering and machine engineering
Technology, medicine, applied sciences > Electrical engineering, electronics
Technology, medicine, applied sciences > Civil engineering and environmental protection engineering
Divisions: Faculty of Mathematics and Science > Institute of Physics (IfP)
Date Deposited: 04 Sep 2015 09:23
Last Modified: 15 Oct 2015 11:14
URI: https://oops.uni-oldenburg.de/id/eprint/2433
URN: urn:nbn:de:gbv:715-oops-25149

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