Title: Comparison of electrical performance of bifacial silicon PV modules
Authors: LOPEZ GARCIA JUANCASADO BREGON ALBERTOPAVANELLO DIEGOSAMPLE TONY
Publisher: WIP GmbH & Co-KG
Publication Year: 2017
JRC N°: JRC108421
ISBN: 3-936338-47-7
ISSN: 2196-100X
URI: http://www.eupvsec-proceedings.com/proceedings?paper=43071
http://publications.jrc.ec.europa.eu/repository/handle/JRC108421
DOI: 10.4229/EUPVSEC20172017-5CO.7.3
Type: Articles in periodicals and books
Abstract: The interest on the n-type crystalline silicon bifacial PV modules has increased in the last years since they can increase the performance in comparison to traditional PV modules. As the PV modules are generally sold according to the nominal power output and efficiency under standard test conditions STC, the lack of standards for bifacial modules leads each manufacturer to claim different amounts for the "added value" of the bifaciality that makes it difficult for customers to directly compare between bifacial manufacturers. In this work, we have compared the electrical performance of framed and frameless c-Si bifacial modules from 5 different manufacturers utilising rear covers of different reflectivity and different measurement methods such as a single-sweep flash simulator, the so-called multi-flash (MF) method, a large-area steady state sun simulator and under natural sunlight for the accurate measurement of the module parameters. It was observed that depending on the measuring method, some modules presented STC front power out of the tolerance range given by the manufacturer. The design of the module also plays an important role on the rear power contribution.
JRC Directorate:Energy, Transport and Climate

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