[TRNSYS-users] Very Simple IV Curve

David BRADLEY d.bradley at tess-inc.com
Wed Jul 31 07:05:09 PDT 2013

   There is an example that shows how to obtain an IV curve if you have 
not already found it. It is located 
in..\Trnsys17\Examples\Photovoltaics\IVcurve.tpf. The trick to the 
example, I think, is that the simulation time is used as a proxy for the 
load voltage.  I am not entirely surprised that you are seeing some odd 
behavior near the open circuit voltage and short circuit voltage points 
as the mathematics of the PV model become very difficult to solve at 
those points.
Kind regards,

On 7/29/2013 15:00, Alexander Appelhans wrote:
> Hello to all,
> I am new to TRNSYS and am currently trying to obtain very simple IV 
> curves for one value of irradiation (70W/m2).
> I have obtained experimental results by varying the resistance across 
> a panel using a decade box, and would like to imitate my results on 
> TRNSYS for validation.
> I have tried to manipulate the simple IV curve example, however I 
> obtain an IV curve which zigzags around the short circuit current and 
> apparently has an infitinite open circuit voltage.
> Any help is truly appreciated, and sorry if this is a very simple request.
> Alexander Liebing
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users

Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

d.bradley at tess-inc.com


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