Hello,
We are working in a project where we plan to use a PV module whose data is not yet in the PVSyst database, and we are using a .PAN file provided by a third party (independent certified laboratory).
There is a significant difference in generation when using the default IAM curve and the "User defined IAM profile", up to 3 percentage points.
We have extensively read your post about “How to determine the IAM profile ?”, and we think the IAM profile provided has been created using outdoor measurements. Do you agree with this? Would you accept this IAM profile for a new module of the PVsyst database? Or would you consider the values differ too much?
Attached to this post you can find a picture of the IAM profiles (both default, using Fresnel’s law, and "User defined IAM profile",). It’s in Spanish, sorry about that!
Thank you very much for your answer!
