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[EnergyPlus_Support] Re: PV model Problem: EquivalentOne-Diode

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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