Re: [TRNSYS-users] Question related to the inverter of type 194

To: "TRNSYS users mailing list at the Solar Energy Lab, UW-Madison" <trnsys-users@cae.wisc.edu>

Subject: Re: [TRNSYS-users] Question related to the inverter of type 194

From: David BRADLEY <d.bradley@tess-inc.com>

Date: Thu, 18 Jul 2013 11:56:36 -0500

Cc: Sotiris Papantoniou <sotos.enveng@gmail.com>

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Sotiris,
The file contains the inverter efficiency as a function of the input power (in watts) and the input voltage (in volts). These values are typically published by manufacturers on the inverter specification sheets. If you do not have such a sheet then you can use the example data file and scale the input voltage and power to the range of input voltage and power that you need. Inverters tend to be quite efficient (around 95%) except when the input power is below about 5 to 10% of the rated input power at which point their efficiency drops quite a lot.
Kind regards,
David

On 7/18/2013 02:28, Sotiris Papantoniou wrote:

Hello Trnsys users,

I am trying to model a pv-system with inverter. I have managed to model the photovoltaic modules using the plug-in, but now I have to model the inverter of the system. The characteristics of the inverter are partly set in the parameters of the type and the external file inserted by the user. Where can I find the information which are related to this file.

Thank you

Sotiris
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