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Sotiris,<br>
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.<br>
Kind regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 7/18/2013 02:28, Sotiris Papantoniou
wrote:<br>
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<p class="MsoNormal">Hello Trnsys users,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">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.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sotiris<o:p></o:p></p>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
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F:+1.608.278.1475
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