Hi,
I would like to calculate shunt and series resistance for a specific solar panel. I will be using datasheets to gather the main parameters. What other parameters should I get in order to calculate it? Or is it enough to calculate fill factor to assume possible efficiency losses?
Dear Johnny,
welcome,
You calculate the Rsh and Rs of the panel from the illuminated I-V curve in the data sheet normally at AM1.5.
The shunt resistance is given by
Rsh= 1/(dI/dV) at the Vpanel =0 , that at short circuit conditions.
Rs= 1/(dI/dV) at open circuit point Vpanel=Voc.
This estimation is fairly good.
If you want to get ore accurate value then you can fit the I-V curve with I-V relation containing the five parameters: Is, n , Isc, Rsh, Rs.
For more information please refer to the book chapter: Chapter Solar cells and arrays: Principles, analysis and design
Best wishes
Dear Johnny Kendratavicius
Please take a look at these links
Best regards
https://www.pveducation.org/pvcdrom/solar-cell-operation/shunt-resistance
https://sinovoltaics.com/learning-center/basics/shunt-resistance/
The following paper handles this issue
Conference Paper Experimental Analysis of Conditions Based Variations of Char...
Check the method in the following textbooks:
Dear Johnny,
welcome,
You calculate the Rsh and Rs of the panel from the illuminated I-V curve in the data sheet normally at AM1.5.
The shunt resistance is given by
Rsh= 1/(dI/dV) at the Vpanel =0 , that at short circuit conditions.
Rs= 1/(dI/dV) at open circuit point Vpanel=Voc.
This estimation is fairly good.
If you want to get ore accurate value then you can fit the I-V curve with I-V relation containing the five parameters: Is, n , Isc, Rsh, Rs.
For more information please refer to the book chapter: Chapter Solar cells and arrays: Principles, analysis and design
Best wishes
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