Parametric analysis varying DC to AC ratio while keeping AC constant

Hi,

I have been trying to run a parametric analysis to vary the DC to AC ratio and the GCR, while keeping the AC size constant. I know that I can vary the DC to AC ratio easily but this seems to vary the AC size. I'd like to keep the AC size constant.

I set the following inputs in a parametric analysis - 'desired array size' to increase in increments, the GCR to increase in increments, and the 'Number of inverters' to be constant. When I run the scenario I can see from the output that the 'System nameplate DC rating' is correct, Kwh/kW is constant and there is no 'AC inverter power clipping loss', which is obviously incorrect.

I am relatively new to SAM so apologies if this has been asked before. I have searched the forum but I didn't find a similar question.

Thanks,
Colin.

Hi Colin,

For this kind of parametric analysis, I would recommend using the number of inverters and modules per string/strings in parallel as parametric inputs so that you know exactly what system you are modeling in each scenario.

Best regards,
Paul.

Hi Paul,

That worked. Thank you for you help.

Regards,
Colin.