Numerical method for angle-of-incidence correction factors for diffuse radiation incident photovoltaic modules

Journal Article · Mon Mar 27 00:00:00 EDT 2017 · Solar Energy

DOI:https://doi.org/10.1016/j.solener.2017.03.027· OSTI ID:1350025

Marion, Bill ^[1]

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1. National Renewable Energy Lab. (NREL), Golden, CO (United States)

Here, a numerical method is provided for solving the integral equation for the angle-of-incidence (AOI) correction factor for diffuse radiation incident photovoltaic (PV) modules. The types of diffuse radiation considered include sky, circumsolar, horizon, and ground-reflected. The method permits PV module AOI characteristics to be addressed when calculating AOI losses associated with diffuse radiation. Pseudo code is provided to aid users in the implementation, and results are shown for PV modules with tilt angles from 0° to 90°. Diffuse AOI losses are greatest for small PV module tilt angles. Including AOI losses associated with the diffuse irradiance will improve predictions of PV system performance.

• Research Organization: National Renewable Energy Lab. (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
• Grant/Contract Number: AC36-08GO28308; AC36-08-GO28308
• OSTI ID: 1350025
• Alternate ID(s): OSTI ID: 1416821
• Report Number(s): NREL/JA-5J00-67995
• Journal Information: Solar Energy, Vol. 147, Issue C; ISSN 0038-092X
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
numerical solution
angle-of-incidence losses
diffuse solar radiation
model