Define power sharing with less number of mppt inputs used

[faculuc]

Hi!

I have this issue. 

5 inverters with 4 MPPT each, 3 differents orientations. 

I,nverter 1 use all mppt inputs, in two orientations. 

Inverters 2-3 are configured without multiple mppt, but actually have 3 fields each. 

Here is the situation, Inverters 4-5 have 3 subconjunts with 3 different orientation each, so i used 3 mppt. But, in the power sharing that it's no possible because that numer is lower than the inverters inputs. 

So, how can i solve this situation? 

Thanks!

[Linda Thoren]

Hello,

In general, you can define multiple MPPTs per sub-array (as long as you have a multiple between the number of strings and MPPT inputs).  

Indeed you have this constraint in the current version that you can not have empty MPPT inputs. To get around the constraints in PVsyst, you could modify the number of MPPTs in the OND file, though this might impact other behaviors of the inverter and you should adjust all the parameters to correspond to the use-case you are referring too.

The following youtube video further explains the MPPT and Power sharing: