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47% IAM factor Losses using Scandia Model


linkeshd

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Dear fellow PVsyst users,

I recently was surprized by some very large loss factors when using Boviet 6612P 320 Optimized modules, as shown:

2018-08-24_12-35-56.png.898f6d0cebd1347b396df77d8b560e2c.png

Crazy Big IAM Factor Losses

 

Investigating the IAM curve, the Scandia curve looks really strange:

2018-08-24_12-33-09.png.ce921453382708e685add98a691205f5.png

Scandia Lab's IAM factor versus others

 

In general, I thought that the Scandia model was experimentally confirmed. Is this the case? Has anyone seen this before? What would you consider a reasonable approach to this?

Thank you,

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I really don't understand how you got this result.

The Sandia model is hard-coded in PVsyst, the values are unmodifiable and give a result very close to the normal Fresnel's model.

This curve is probably a user-defined IAM profile, specified in your PV module, with completely erroneous parameters.

 

IAM_SandiaModel.png.bf80f323df95ba30062133769a8dd5d2.png

Sandia model and Fresnel, normal glass and with AR-coating

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