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[Doc] bifacial.power_mismatch_deline incorrect total RMAD from rear guidance #2930

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Merged
cwhanse merged 3 commits into from
Nov 3, 2026
Merged

[Doc] bifacial.power_mismatch_deline incorrect total RMAD from rear guidance #2930

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3763d41
Fix docstring equations
echedey-ls Nov 1, 2026
5cee1df
Add whatsnew entry
echedey-ls Nov 1, 2026
ec045a8
Review: move whatsnew entry to Docs section
echedey-ls Nov 3, 2026
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2 changes: 2 additions & 0 deletions docs/sphinx/source/whatsnew/v0.16.2.rst
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Expand Up @@ -31,6 +31,8 @@ Enhancements

Documentation
~~~~~~~~~~~~~
* Fix :py:func:`pvlib.bifacial.power_mismatch_deline` incorrect derivation
of total RMAD from rear RMAD. (:issue:`2929`, :pull:`2930`)
* Add :py:func:`pvlib.spa.transit_sunrise_sunset` to the API reference.
(:issue:`2255`, :pull:`2873`)
* Clarified in :py:func:`pvlib.tracking.singleaxis` that the tracker
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6 changes: 3 additions & 3 deletions pvlib/bifacial/loss_models.py
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Expand Up @@ -115,8 +115,8 @@ def power_mismatch_deline(

.. math::

RMAD(k \cdot X + c) = RMAD(X) \cdot k \frac{k \bar{X}}{k \bar{X} + c}
= RMAD(X) \cdot \frac{k}{1 + \frac{c}{k \bar{X}}}
RMAD(k \cdot X + c) = RMAD(X) \frac{k \bar{X}}{k \bar{X} + c}
= RMAD(X) \cdot \frac{1}{1 + \frac{c}{k \bar{X}}}

by similarity with equation (2) of [1]_:

Expand All @@ -128,7 +128,7 @@ def power_mismatch_deline(

.. math::

RMAD_{total} = RMAD_{rear} \frac{\phi_{Bifi}}
RMAD_{total} = RMAD_{rear} \frac{1}
{1 + \frac{G_{front}}{\phi_{Bifi} \bar{G}_{rear}}}

See Also
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