[TRNSYS-users] TRNSYS-users Digest, Vol 157, Issue 7
David BRADLEY
d.bradley at tess-inc.com
Tue Jan 9 08:59:15 PST 2018
Amit,
I am not clear as to whether you are asking for an explanation of the
equation V = max(0,time-10) or whether you are asking about the format
of the characteristic of a photovoltaic's I-V curve.
If it is the first case then the max(:,:) function returns the maximum
of two arguments. TIME is a built-in variable. The equation sets a
variable (V) to the maximum of zero or the present simulation time minus
10.
If you want to know about the characteristic curve of a PV I would
recommend reading the 04-MathematicalReference manual section about the
PV Type that you are using.
kind regards,
David
On 01/09/2018 07:23, Amit Verma via TRNSYS-users wrote:
> Hello Everyone !!!
>
> Can anyone describe how to write Eqn for I-V Curve in Photovoltaic
> i.e V=max (0,time-10)
>
> Regards
> Amit Verma
>
> On Tue, Jan 9, 2018 at 2:03 PM,
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> Today's Topics:
>
> 1. Re: curve of WTG (MACIAS VICENTE, SERGIO)
>
>
> ---------- Forwarded message ----------
> From: "MACIAS VICENTE, SERGIO" <SMACIAS at external.gamesacorp.com
> <mailto:SMACIAS at external.gamesacorp.com>>
> To: "'David BRADLEY'" <d.bradley at tess-inc.com
> <mailto:d.bradley at tess-inc.com>>, "TRNSYS users mailing list at
> OneBuilding.org" <trnsys-users at lists.onebuilding.org
> <mailto:trnsys-users at lists.onebuilding.org>>
> Cc:
> Bcc:
> Date: Tue, 9 Jan 2018 08:33:50 +0000
> Subject: Re: [TRNSYS-users] curve of WTG
>
> Hello,
>
> Thank you very much. The fault was that.
>
> Best regards.
>
> *Sergio Macías Vicente*
>
> Offgrid Technical
>
> Siemens Gamesa Offgrid
>
> Descripción: Descripción: cid:image001.png at 01D2AD3E.E2146250
>
> *Gamesa Corporación Tecnológica*
>
> *De:*David BRADLEY [mailto:d.bradley at tess-inc.com
> <mailto:d.bradley at tess-inc.com>]
> *Enviado el:* viernes, 22 de diciembre de 2017 18:55
> *Para:* MACIAS VICENTE, SERGIO; TRNSYS users mailing list at
> OneBuilding.org
> *Asunto:* Re: [TRNSYS-users] curve of WTG
>
> Sergio,
>
> I suggested the distributor route because this forum is
> (supposedly) for users to help users whereas the distributors are
> (hopefully) more likely to respond to tech support questions like
> yours.
>
> I did look at the project you sent. The wind turbine is internally
> controlled so that if the wind speed exceeds the rated wind speed
> (specified in the data file) the rotors change pitch to shed wind
> so that the turbine is not damaged. When the incident wind speed
> exceeds rated wind speed the turbine will produce its rated power.
>
> kind regards,
>
> David
>
> On 12/20/2017 01:50, MACIAS VICENTE, SERGIO wrote:
>
> Hello,
>
> I attach all the files. Surely someone can help me. It is a
> simple example to verify that the behavior of the wind turbine
> is correct.
>
> Thank you.
>
> Best regards.
>
> *Sergio Macías Vicente*
>
> Offgrid Technical
>
> Siemens Gamesa Offgrid
>
> Descripción: Descripción: cid:image001.png at 01D2AD3E.E2146250
>
> *Gamesa Corporación Tecnológica*
>
> *De:*David BRADLEY [mailto:d.bradley at tess-inc.com]
> *Enviado el:* martes, 19 de diciembre de 2017 21:19
> *Para:* TRNSYS users mailing list at OneBuilding.org
> *CC:* MACIAS VICENTE, SERGIO
> *Asunto:* Re: [TRNSYS-users] curve of WTG
>
> Sergio,
>
> I would recommend that you send your project to your
> distributor so that they can determine why the turbine is
> giving less power than expected.
>
> The distributor will need to have your project (*.tpf file)
> and the wind turbine data file that you are using as well as
> any other files needed in order to run the simulation.
>
> kind regards,
>
> David
>
> On 12/19/2017 09:47, MACIAS VICENTE, SERGIO via TRNSYS-users
> wrote:
>
> Hello, my name is Sergio.
>
> I have a question. I have the curve of a wind turbine as
> in the image. The behavior is not correct, since at 25 m /
> s they produce 95 kW. Can you insert a curve in the next way?
>
> Thanks.
>
> Best regards.
>
> *Sergio Macías Vicente*
>
> Offgrid Technical
>
> Siemens Gamesa Offgrid
>
> Descripción: Descripción: cid:image001.png at 01D2AD3E.E2146250
>
> *Gamesa Corporación Tecnológica*
>
> **
>
> Crta. Pozaldez km.1
>
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>
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>
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>
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> --
>
> ***************************
>
> 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
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>
>
> --
>
> ***************************
>
> 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
>
>
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--
***************************
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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