Comparison of Bifacial Module Measurement Methods with Optically Optimized Bifacial Modules
de Groot, K.M.
van Aken, B.B.
We characterize four types of bifacial modules with three different methods that have been proposed by the community. One method approximates rear irradiance with increased front side irradiance. The other two utilize light directly radiating on the rear side of the module. We describe the setup, the calibration, and the resulting errors inherent to each method. Comparing the results, we find that current scales Linearly with additional irradiance on either the front or rear of the module and is in good agreement between all of the methods. However, characterization methods with light incident on the rear of the module results in higher power, suggesting asymmetric front and rear power scaling at low light conditions for high efficiency bifacial modules.
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Energy / Geological Survey Netherlands
Institute of Electrical and Electronics Engineers IEEE
7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018, a Joint Conference of the 45th IEEE PVSC, the 28th PVSEC and the 34th EU PVSEC, 10-15 June 2018, Waikoloa, HI, USA, 3593-3597