pvlib.iam.sapm#
- pvlib.iam.sapm(aoi, module, upper=None)[source]#
Determine the incidence angle modifier (IAM) using the SAPM model.
- Parameters
- Returns
iam (numeric) – The SAPM angle of incidence loss coefficient, termed F2 in 1.
Notes
The SAPM 1 traditionally does not define an upper limit on the AOI loss function and values slightly exceeding 1 may exist for moderate angles of incidence (15-40 degrees). However, users may consider imposing an upper limit of 1.
References
- 1(1,2)
King, D. et al, 2004, “Sandia Photovoltaic Array Performance Model”, SAND Report 3535, Sandia National Laboratories, Albuquerque, NM.
- 2
B.H. King et al, “Procedure to Determine Coefficients for the Sandia Array Performance Model (SAPM),” SAND2016-5284, Sandia National Laboratories (2016).
- 3
B.H. King et al, “Recent Advancements in Outdoor Measurement Techniques for Angle of Incidence Effects,” 42nd IEEE PVSC (2015). DOI: 10.1109/PVSC.2015.7355849