Differences

This shows you the differences between two versions of the page.

--- electrical:solar:shading [2020/10/11 19:48]
127.0.0.1 external edit
+++ electrical:solar:shading [2021/03/31 10:55]
frater_secessus [exception: high voltage strings + mppt]
@@ Line 34: / Line 34: @@
 There is another approach, which is to **bring the shaded cells/strings back online by bringing the rest of the panel down to their level**.  It sounds counterproductive, but with MPPT controllers and in some higher-voltage series configurations (say Vmp is >=3x bank voltage) it works.
-This occurs because the MPPT has a broader range of voltages to sweep and can find [[https://www.sciencedirect.com/science/article/abs/pii/S0960148113006952|other power peaks]] (panel voltages) that are **low enough to bring the shaded cells back online** but still **high enough to charge the battery bank**.  It's  not reality, but we can think of it as MPPT evenly "shading" the entire panel voltage-wise in order to get max juice from it in partial shade conditions.
+This occurs because the MPPT has a broader range of voltages to sweep and can find [[https://www.sciencedirect.com/science/article/abs/pii/S0960148113006952|other power peaks]] (panel voltages) that are **low enough to bring the shaded cells back online** but still **high enough to charge the battery bank**.  It's  not reality, but we can think of it as MPPT evenly "shading" the entire panel voltage-wise in order to get max juice from it in partial shade conditions.((https://diysolarforum.com/threads/mppt-sizing.17947/post-208104))
 ===== examples =====

RV and vandwellers wiki

User Tools

Site Tools

Differences

Page Tools