How to select different number of module in 2 arrays

[Tia]

The software recommended a solar system with 11 modules, which aligns with the actual installed system of 11 modules.

However, the array design feature did not permit the selection of two arrays with different numbers of modules (one with 6 and another with 5). I had to choose either 5 or 6 modules per array, resulting in a total of either 10 or 12 modules. This discrepancy impacts the economic evaluation, particularly in terms of module quality.

Do you know how to solve this problem?

 

[Linda Thoren]

Dear Tia,

To configurate one string with 5 modules in series and a second with 6 modules in series, you should define 2 sub-arrays (see a list of your sub-arrays to the right in the system window). You can copy your first sub-array, modify the number of MPPT inputs, modules in series and in strings and activate the Power sharing feature, to share the power of the two sub-arrays within the same inverter.

We have a youtube tutorial on this subject that further explains how to configure the sub-arrays, the use of the MPPT feature and the Power sharing:

You can also fins more examples on the PVsyst help page:

https://www.pvsyst.com/help/multi_mppt_use.htm

https://www.pvsyst.com/help/multi-mppt_more-examples.htm

Kind regards