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[EnergyPlus_Support] Re: PV model Problem: EquivalentOne-Diode
Dear All
I have solved this problem by examining the input.
The variable is temperature coefficient of Isc or Iov is A/C or V/C; and the variables given by specification of PV module is normally %/C. Conversion is needed.
I didn't notice that and it causes fatal error in EnergyPlus.
RGDs
Zhang XiangJing
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "hvacgeshen516" <geshen516@...> wrote:
>
> Dear All
>
> Sorry for the chaotic table of the data.
> The problem after tuning is that: in my model the temperature coefficient of Isc and Voc is wrong, and I correct them, however, another problem emerge:
> the error message is like:
> ** Severe ** EquivalentOneDiode Photovoltaic model failed to find maximum power point
> ** ~~~ ** Numerical solver failed trying to take exponential of too large a number
> ** ~~~ ** Check input data in PhotovoltaicPerformance:EquivalentOne-Diode
> ** ~~~ ** VV (voltage) = -3088.96763
> ** ~~~ ** II (current) = -5.32720E+169
>
> Thanks for your attention and help
> Regards
> Zhang XiangJing
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "hvacgeshen516" <geshen516@> wrote:
> >
> > Hello EveryOne. Happy New Year.
> >
> > I encounter a problem with the PV model: EquivalentOne-Diode.
> > My PV panel data is model 2 below; model 1 is the data in example file "GeneratorwithPV"
> > A fatal error will happen when I use my data as shown as model 2.
> > The model 1 data works well in my whole building.
> > Is there any limitation for the equivalentOne-Diode model?
> >
> > Best Regards
> > Zhang XiangJing
> > Solar Energy Research Institute of Singapore
> >
> > Model 1 Model 2
> > CrystallineSilicon CrystallineSilicon
> > 36 50
> > 0.63 1.2168
> > 0.9 0.95
> > 1.12 1.12
> > 1000000 1000000
> > 4.75 8.23
> > 21.4 30.8
> > 25 25
> > 1000 1000
> > 4.45 7.71
> > 17 24.7
> > 0.00065 0.054
> > -0.08 -0.343
> > 20 20
> > 47 47.5
> > 800 800
> > 30 30
> > 50000; 50000;
> >
>
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