Spectral Rear Irradiance Testing and Modeling for Degradation and Performance of Solar Fields: Preprint
Conference
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OSTI ID:1907803
This work investigates how the spectrum of irradiance incident on the rear of solar modules impacts their degradation, and in case of bifacial PV their performance. We calculate the spectral irradiance incident on the rear of modules through raytrace simulations and validate with measured field data collected from a 75kW single axis-tracked bifacial test site. An equation to calculate relative degradation is shown, showing that current acceleration factors for UV damage in chambers can be off by +3% for the rear surfaces. Finally, a method for improving non-spectral simulations is proposed.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1907803
- Report Number(s):
- NREL/CP-5K00-81934; MainId:82707; UUID:24431ca2-6d52-454d-b062-1cda0be246e5; MainAdminID:68329
- Country of Publication:
- United States
- Language:
- English
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