pvlib.irradiance.aoi_projection¶
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pvlib.irradiance.
aoi_projection
(surface_tilt, surface_azimuth, solar_zenith, solar_azimuth)[source]¶ Calculates the dot product of the solar vector and the surface normal.
Input all angles in degrees.
Parameters: surface_tilt : float or Series.
Panel tilt from horizontal.
surface_azimuth : float or Series.
Panel azimuth from north.
solar_zenith : float or Series.
Solar zenith angle.
solar_azimuth : float or Series.
Solar azimuth angle.
Returns: float or Series. Dot product of panel normal and solar angle.