Error when trying to input user specified values for CdTe module CEC model

  • haysoul
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18 May 2024 22:06 #13174 by haysoul
Hello,

I am simulating a system with a CdTe module not in the CEC database. I have input all the values according to the manufacturer's specifications sheet but when I tried to plot the IV-curve, I got the following error: Could not solve, sanity check failed (-2): Il < 0.5 || Il > 20.0

My hunch is that SAM does not accept PV modules with short-circuit current values of less than 0.5A and more than 20A. Is my hunch correct? If not, could someone please let me know what that error might be and how to fix it?

The details of the PV modules I have are as follows:
  • Module Power: 24 W
  • Cell Type: CdTe
  • Vmp: 88.4 V
  • Imp: 0.27 A
  • Voc: 118.7 V
  • Isc: 0.32 A
  • Temperature coefficient of Voc: -0.321 %/°C
  • Temperature coefficient of Isc: 0.06 %/°C
  • Temperature coefficient of power: -0.214 %/°C
  • Number of cells in series: 140
  • Nominal operating temperature 47.3 °C
  • Module area: 0.72 m²
  • Module aspect ratio: 2

Regards.

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  • pgilman
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20 May 2024 21:09 #13178 by pgilman
Hi Koami,

Make sure you change the units for the temperature coefficients of Voc and Isc if you enter them in %/°C:

 

If you are using the correct units and continue to have trouble, please attach a .sam file with the data you entered so I can help troubleshoot.

Best regards,
Paul.
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