Journal
IEEE JOURNAL OF PHOTOVOLTAICS
Volume 12, Issue 3, Pages 787-797Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOTOV.2022.3161186
Keywords
Lighting; IEC Standards; Sea measurements; Silicon; Testing; Current measurement; Photovoltaic systems; Bifacial; photovoltaic (PV) performance; standards
Funding
- project (PV-ENERATE) - EMPIR programme
- European Union's Horizon 2020 research and innovation programme
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Bifacial crystalline Silicon (Si) photovoltaic (PV) devices are receiving significant attention from manufacturers and the market due to their enhanced performance compared to traditional monofacial PV devices. This article analyzes and compares different testing methods for the electrical performance of bifacial Si devices at the European Solar Test Installation, and concludes that deviations in P$_{max}$ below 0.9% were obtained for most testing methods except for the double-source approach with a rear reflector where the measurement of the rear irradiance influences the P$_{max}$.
Bifacial crystalline Silicon (Si) photovoltaic (PV) devices are attracting considerable interest from manufacturers and the market since they can enhance the performance in comparison with traditional monofacial PV devices. Technical specification IEC TS 60904-1-2 was published in 2019 and proposes several characterization methods for bifacial PV device testing based on single-side, double-sided and natural sunlight illumination. This article analyses the advantages, disadvantages, the suitability and the feasibility of the different methods and compares the electrical performance obtained by the proposed approaches at the European Solar Test Installation for the testing of bifacial Si devices. Deviations in P$_{max}$ below 0.9% for the different testing methods under test was obtained except for the double-source approach with a rear reflector (2.59%) where the measurement of the rear irradaince influence the P$_{max}$.
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