Modular Simulations

I have successfully used the json files generated from the SAM UI to recreate a Detailed PV - Merchant Plant simulation
in python, but now I'd like to adjust the 'Desired Array Size' from the System
Design tab programmatically in python and I believe that can be done by
changing the system capacity or nameplate capacity. The issue I'm having comes
with locating the various fields that are changed when the array size changes
and the calculations used to update those fields. I know the GitHub has the
runtime/ui folder, but it's been difficult to find what I'm looking for. Does
anyone know the fields and their associated calculations that are updated when
the array size changes?

Hi Jordan,

The "Estimate Subarray 1 configuration" option on the System Design page of SAM's Detailed PV model uses code that is embedded in the user interface to calculate the value of number of modules per string and number of strings in parallel for Subarray 1 as described in the PV Sizing and Configuration topic of Help: samrepo.nrelcloud.org/help/pv_sizing.htm

If you want that functionality in Python, you can write it yourself based on that description. The SSC inputs that determine the size of the array are:

subarray1_modules_per_string
subarray1_nstrings
inverter_count

If your design uses more than one subarray, then you'll need to assign values to subarray[n] variables, where n is the subarray number between 1 and 4, inclusive.

Best regards,
Paul.