Planning PV Sub Arrays and specific panels to specific MPPs of defined Inverters

[Lukas227]

Dear all,

I am trying to string my sub arrays to specific MPPs. However for simulation I am forced to pick a inverter for all orientations which results in over or under dimensions for this orientation. Cosequently it does not allow me to simulate and make use of the inverters I need. Specifically I require that area three makes use of one SMA Tripower 25kw with 3 MPPs. How can I avoid to be forced to pick a inverter for grey area and use one inverter for both?

Side questions: How do I combine the pv fields to a larger group, having 8 instead of 166?

I really appreciate some help as I could not figure this limitation out.

want. 

[Linda Thoren]

Hello Lukas,

It is indeed possible to create a sub-array for each MPPT and in general you are not forced to choose one inverter per orientation. You can even mix two orientations in one MPPT as long as you have at least one string in each orientation

Assuming you are importing your 3D scene from another software, creating full tables instead of individual panels is normally done in the external tool. Instead of defining each individual panel, define the complete area of the table (including the spacing of between the panels) and PVsyst will fill the tables with the amount of panels that can fit in that specified area. This would create 14 tables in your scene. 

[Lukas227]

Thank you. I am using pv syst 8 and I do not find the multi MPP feature. You recomend me to downgrade to pv syst 7 or is there a different Solution? 
 

In this multi MPP I am also able to define if certain strings go parallel?

Thanks again!

[Linda Thoren]

The tutorial is from version 7, but the functionality is the same in version 8. For your inverter, you either define "Pnom sharing withing the inverter" or "independent MPPT inputs". Indeed, in every sub-array you have to define how many strings you have in parallel. You can not define strings of different lengths in 1 MPPT.