Sandeep Chahal
Research Assistant
UAB School of Engineering
**********************-----------------------------------------------*********************************************
Sotiris,
When you choose a PV from the list, all
of the fields should still
show "?????" until
you click on the "calculate" button in the
"calculations"
section of the plugin. When you manually enter
parameters, the same
is true; the fields at the bottom for the 5
reference parameters
should all show "?????" until you choose
"calculate". The
plugin transfers the computed results back to
the
proforma if it was
able to obtain a good solution once you select
"Exit"
from the File menu.
If the plugin did not solve to within
tolerances, it
will show you its
best guess of the answers but it will not
transfer the
values back to the
plugin automatically. You can transfer them
manually
if you need to.
If you are having trouble with a
particular PV module, please send me
the input data. I
may be able to generate the parameters for you
using a
different tool.
Best,
David
On 7/22/2013 03:48,
Sotiris Papantoniou wrote:
>
> Dear David
and all Trnsys users,
>
> The thank
you for the information for the inverter, I
have managed to
> find the
data for the data file. Coming back to the
trnsys plug-in of
> type 194,
the plug-in seems to work in a mysterious
way.
>
> If I select
a specific photovoltaic type from the list
no data are
> available.
>
> If I add
manually some data on the plug-in, the 5
parameters are
> identical to
example.var's parameters.
>
> Is there
something missing from my plug-in? Am I
doing something wrong?
>
> Thank you
>
> Sotiris
>
> *From:*David
BRADLEY [mailto:d.bradley at
tess-inc.com]
> *Sent:*
Thursday, July 18, 2013 7:57 PM
> *To:* TRNSYS
users mailing list at the Solar Energy Lab,
UW-Madison
> *Cc:*
Sotiris Papantoniou
> *Subject:*
Re: [TRNSYS-users] Question related to the
inverter of type 194
>
> 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
>
>
>
>
>
_______________________________________________
>
>
TRNSYS-users mailing list
>
>
TRNSYS-users at
cae.wisc.edu
<mailto:TRNSYS-users at
cae.wisc.edu>
>
>
https://mailman.cae.wisc.edu/listinfo/trnsys-users
>
>
>
> --
>
***************************
> David
BRADLEY
> Principal
> Thermal
Energy Systems Specialists, LLC
> 22 North
Carroll Street - suite 370
> Madison, WI
53703 USA
>
>
P:+1.608.274.2577
>
F:+1.608.278.1475
>
d.bradley at
tess-inc.com <mailto:d.bradley at
tess-inc.com>
>
>
http://www.tess-inc.com
>
http://www.trnsys.com
>
>
>
_______________________________________________
> TRNSYS-users
mailing list
>
TRNSYS-users at
cae.wisc.edu
>
https://mailman.cae.wisc.edu/listinfo/trnsys-users
--
***************************
David BRADLEY
Principal
Thermal Energy
Systems Specialists, LLC
22 North Carroll
Street - suite 370
Madison, WI
53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at
tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com
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