Subarray 1 Short circuit Current (A) is not computing properly

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Miles
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12 Mar 2021 19:05 #9368 by Miles

Subarray 1 Short circuit Current (A) is not computing properly was created by Miles

I don’t think that “Subarray 1 Short circuit DC current (A)” in the Lifetime Hourly Data is calculating correctly. It appears to be the
current for a single source circuit (or individual PV module) and NOT the subarray as defined on the System Design tab. Please check that.

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pgilman

13 Mar 2021 00:35 #9369 by pgilman

Replied by pgilman on topic Subarray 1 Short circuit Current (A) is not computing properly

Hi Miles,

Thank you for the feedback.

That label is incorrect. It is the short circuit current (Isc) of a single string in Subarray 1 rather than of the subarray Isc. You can calculate the subarray Isc by multiplying the "Subarray Isc" by the number of strings in the subarray.

I have create an issue on our GitHub repository for this so we can fix it: github.com/NREL/SAM/issues/562

Would you mind telling us how you are using this value? What would be the best value for SAM to report?

Best regards,
Paul.

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