Re: [TRNSYS-users] PV simulation

[David BRADLEY <d.bradley@tess-inc.com>]

Marco,
  First, I would recommend that you use Type194 in place of Type94 as it is a more robust model for simulating the performance of thin-film PV technologies. If you are looking at crystalline silicon PV then it is fine to continue using Type94. Second, Type94 does take into account the negative impact of cell temperature on module performance however, I imagine that there are other factors in your change of location that overwhelm the impact of the cell temperature. If you would like to send me the input file, I can have a look at it.
Kind regards,
 David

On 3/28/2013 06:48, Marco Scarpellino wrote:

Dear all,

I am trying to simulate a solar PV plant with type 94a in different cities around the world. As known, the efficiency of a pv module, decrease with the increasing of the ambient temperature. It seems  that the component doesn't take properly into account this behaviour. In fact, for example, I find a bigger average annual efficiency of solar field in Ryiadh than in Napoli. I have also noticed that the changing of the value of the parameter n. 8 (=Temperature coeficient of Voc (ref. cond.)) does not produce any change in the output power. 

Do you know what is the reason for these inconsistencies? Where I can finde the source code for this type to check the equation used for the calculation (I don't find it in my installation path)?

Thanks in advance for your help.

Best Regards,

Marco Scarpellino

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