Effect of the by-pass diodes with portrait module installation

[Vladislav Iliev]

Hi.

In help-section explanation of the "Effect of the by-pass diodes" starts with 3 hypotesis and states:

Fraction for electrical loss should always be set to 100%

How would that change in case of PV modules with 3 sub-modules in portrait orientation ?

 

 

[Michele Oliosi]

Hi sorry that page was not updated in a while.
The following page will help you configure the partitions:
https://www.pvsyst.com/help/shadings_partitioninstrings.htm

[Vladislav Iliev]

How  panels with sub-modules should be configured (e.g. partitionwise / fraction for electrical effect,%) ?

Any cases /examples when fraction for electrical effect should be set to less then 100% ?

[Michele Oliosi]

This is what the help page tries to answer. The examples shown on the page are all for modules with either 3 or 6 (half-cut cell modules) submodules.

The fraction for electrical effect should be 100% whenever the shadings are regular (regularly arranged rows, not many shading objects). If you have irregular shadings in that case you can decrease the electrical effect fraction.