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Simulation, validation and analysis of shading effects on a PV system
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy system. Universidad de Valladolid (UVa), School of Forestry, Agronomic and Bioenergy Industry Engineering (EIFAB), Department of Agricultural and Forestry Engineering, Campus Duques de Soria, Soria, Spain.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building, Energy and Environmental Engineering, Energy system.
2018 (English)In: Solar Energy, ISSN 0038-092X, E-ISSN 1471-1257, Vol. 170, p. 828-839Article in journal (Refereed) Published
Abstract [en]

A simulation program for calculating the IV-curve for series connected PV-modules during partial shadowing has been developed and experimentally validated. The software used for modelling the modules is LTspice IV. The validation has been done by means of a comparative analysis using the experimental results obtained in a set of tests performed on the mono-crystalline modules of the Gävle University's laboratory in Sweden. Experimental measurements were carried out in two groups. The first group is a string of six modules with bypass diodes while the second one corresponds to a single PV module. The simulation results of both groups demonstrated a remarkable agreement with the experimental data, which means that the designed model can be used for simulating the influence of shading on the power of a string. The model has been used for analysing the performance of strings of PV modules with shadows and the benefits of installing DC-DC optimizers or module inverters, that minimise the impact of shading, have been investigated.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 170, p. 828-839
Keywords [en]
Bypass diode, DC-DC optimizer, PV modelling, Single-diode
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:hig:diva-27356DOI: 10.1016/j.solener.2018.06.035ISI: 000442713900076Scopus ID: 2-s2.0-85048298570OAI: oai:DiVA.org:hig-27356DiVA, id: diva2:1223314
Funder
Swedish Energy Agency
Note

Funding information:

Applied PV research and development program SoEl

Swedish industries through Energiforsk

Available from: 2018-06-25 Created: 2018-06-25 Last updated: 2018-09-14Bibliographically approved

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Karlsson, Björn O.

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