Jump to content

Layout and partition of modules


Recommended Posts

Good morning,

I want to define the layout of my modules, however PVSYST does not allow me to access the page.

He writes the following message

The partition of PV module into submodules is not defined.
You cannot use the "Layout" module tool.

However, I clearly defined the score in the nearby shading scene.


can you help me

Capture d’écran 2023-09-21 151109.jpg

Capture d’écran 2023-09-21 151740.jpg

Link to comment
Share on other sites

Dear Meurville,

The « Module Layout » calculation is based on the internal geometric arrangement of the sub-modules.

See the help  “Physical models used > PV Module - Standard one-diode-model > PVModule Structure > Submodules”.

This submodules partition is defined in the PV module definition, page “Sizes and technologies”

Now only the options “In length”, “In width” and “Twin Half cells” or Twin Third cells” have been implemented in PVsyst. 

More and more PV modules have other exotic configurations. You cannot use this option with other layouts.

 This error message was added rather recently (some few months ago), for avoiding erroneous calculations.   It is possible that your previous simulation has been done before this protection.

In your old calculation, the electrical shadings calculation may be not quite accurate.

The only way for avoiding this problem is to cheat, by redefining your PV module with an allowed submodule layout.

However in this case, the electrical shading calculation accuracy cannot be guaranteed with respect to the reality.



Link to comment
Share on other sites


Good morning,

Thank you for your feedback, the module used is VOLTEC brand type VSMD in 395WC.

Even changing the partition doesn't work. It seems that your partition choices are limited compared to this module with 2 diodes lengthwise.

Can you contact the manufacturer VOLTEC SOLAR to resolve this problem?


Link to comment
Share on other sites

We cannot adapt to technologies that are not clearly defined. 

Manufacturers dont' communicate on the internal electrical wiring of the cells.

We therefore cannot "guess" how the shading affects this PV module via the layout module.

You can use the shading scene to calculate a shading and electrical loss factor via "partition"

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...