Re: [EnergyPlus_Support] Fatal Error: Photovoltaic (EquivalentOne-Diode) ..

[JOSE MARCOS CHAVES BARBOSA <zemarcoscb@xxxxxxxxxxxx>]

Hello.

Perhaps you should look to the temperature coefficients. Make sure that the units are consistent comparing the datasheet data with the EP data.

Here, with the corrected values it could run a simulation (values from the datasheet which you sent converted into [A/K] and [V/K]), while with the values directly from the datasheet (both in [%/K]) I got this error message:

   ** 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) = 24.62826

   **   ~~~   ** II (current) = -3084.79299

   **  Fatal  ** FUN: EnergyPlus terminates because of numerical problem in EquivalentOne-Diode PV model

Obs: 

>Probably (almost sure) my IDF file is diferent than yours. 

>Sorry for my English.

José Marcos

CEFET-MG / Brasil

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De: Sarah Al Jarallah <sarahalghamdi@xxxxxxxxx>
Para: "energyplus_support@xxxxxxxxxxxxxxx" <energyplus_support@xxxxxxxxxxxxxxx>
Enviadas: Sábado, 16 de Fevereiro de 2013 16:52
Assunto: [EnergyPlus_Support] Fatal Error: Photovoltaic (EquivalentOne-Diode) ..

 

Dear all,

At the mean time, Iâ??m modeling a single-family house with PV system by using the (PhotovoltaicPerformance:EquivalentOne-Diode) type ..  At first, I tried the PV characteristics given in example file "GeneratorwithPV" where the simulation went smoothly and I got results.  But when I used PV characteristics(attached) from a catalogue I got fatal error:

** 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) = -7519.13932

   **   ~~~   ** II (current) = 0.00000

   **  Fatal  ** FUN: EnergyPlus terminates because of numerical problem in EquivalentOne-Diode PV model 

 

I would appreciate your help..

Thank you ..

 

-----------------------------------------------

Best Regards,

Sarah Al Jarallah

 

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