pvlib.shading.linear_shade_loss#

pvlib.shading.linear_shade_loss(shaded_fraction, diffuse_fraction)[source]#

Fraction of power lost to linear shade loss applicable to monolithic thin film modules like First Solar CdTe, where the shadow is perpendicular to cell scribe lines.

Parameters

shaded_fraction (numeric) – The fraction of the collector width shaded by an adjacent row. A value of 1 is completely shaded and zero is no shade.
diffuse_fraction (numeric) – The ratio of diffuse plane of array (poa) irradiance to global poa. A value of 1 is completely diffuse and zero is no diffuse.

Returns

linear_shade_loss (numeric) – The fraction of power lost due to linear shading. A value of 1 is all power lost and zero is no loss.

See also

pvlib.shading.tracker_shaded_fraction

Example

>>> from pvlib import shading
>>> fs = shading.tracker_shaded_fraction(45.0, 0.8, 45.0, 0)
>>> loss = shading.linear_shade_loss(fs, 0.2)
>>> P_no_shade = 100  # [kWdc]  DC output from modules
>>> P_linear_shade = P_no_shade * (1-loss)  # [kWdc] output after loss
# 90.71067811865476 [kWdc]

pvlib.shading.tracker_shaded_fraction

Spectrum