Analysis and identification of measurement uncertainty sources of a LED Sun Simulator with double-side illumination for bifacial PV Module Power Rating
2023 IEEE 50TH PHOTOVOLTAIC SPECIALISTS CONFERENCE, PVSC(2023)
摘要
This paper gives an understanding of measurement uncertainty sources of LED sun simulators beyond uncertainty calculation for pulsed Xenon lamp systems. Technology-specific uncertainty sources will be identified, and an uncertainty budget calculation of a single-side and a double-side LED solar simulator will be presented. Results show significant differences between the two light sources. The expanded uncertainty (k=2) for power measurements at 1000 W/m(2) (front) and 200 W/m(2) (rear) is +/- 8.4%. Due to the 648 individual powered LED channels of each light source, the spectral distribution, the spatial non-uniformity, and the light stability during the I-V sweep are some of the main contributors to the expanded uncertainty.
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