[TRNSYS-users] batteries models
David BRADLEY
d.bradley at tess-inc.com
Fri Feb 25 10:20:49 PST 2011
Carol,
Yes, that would be the correct approach. The inverter that is built
in to Type194 takes the DC power directly from the array and converts it
to AC. You would want a charge controller (regulator) that charged the
battery with DC power and only after that converted to AC power with an
inverter.
Best,
David
On 2/24/2011 09:28, Pascual, Carol wrote:
>
> Hello,
>
> I would like to simulate a PV system with energy storage and I think
> that I can´t use the type 194b PV-Inverter. I have to use the type 194
> then a regulator-inverter (type 48d) and finally the battery (type
> 47c). Am I right?
>
> Thanks in advance,
>
> Carol
>
> *De:*David Bradley [mailto:bradley at tess-inc.com]
> *Enviado el:* 12 March 2010 18:51
> *Para:* Dimas Firmanda Al Riza
> *C**C:*Maria Victoria Cambronero Vazquez; trnsys-users at cae.wisc.edu
> *Asunto:* Re: [TRNSYS-users] batteries models
>
> Dimas,
> I am not sure that changing the cell voltage is valid. I think that
> the Shepherd model assumes a certain shape to the battery's charge /
> discharge curve that is inherent to lead acid batteries and not as
> valid to other battery types. Someone please correct me if I am wrong
> about that.
> Best,
> David
>
>
> Dimas Firmanda Al Riza wrote:
>
> Dear David and Maria,
>
> I'm also doing simulation that required different type of battery from
> the existing battery type available in TRNSYS library,
> I need to simulate 12V battery bank, that consist of 4 @12V 100Ah
> battery. Type 47b in TRNSYS library have a default voltage value of
> 2,5V each cell, Can I simply change this value? or do I need to make
> some other modification for this component?
> David, I'd like to read the paper you've offered to maria, would you
> send me also?
>
> Thank you very much
>
> -dimas-
> ME Student
> UTP
>
> On Sat, Mar 13, 2010 at 12:18 AM, David Bradley <bradley at tess-inc.com
> <mailto:bradley at tess-inc.com>> wrote:
>
> Maria,
> You are correct that the battery models in TRNSYS are for lead-acid
> cells. I was directed to a paper some years ago that suggested a
> method for modeling lithium-ion batteries. The method comes down to
> curve fitting the data that you get from a manufacturer's catalog into
> a few polynomials. I had a hard time following the some parts of the
> paper and never got a chance to implement the model but it seemed to
> me as though the method could be extended to other battery types. I'll
> forward you the paper in a separate email. If anyone else has seen
> some modeling research in this area, I'd be quite interested in
> hearing about it to improve on the existing battery models.
> Best,
> David
>
>
>
>
> Maria Victoria Cambronero Vazquez wrote:
>
> Hi,
>
> I´d need to know if there is a model of Li-Ion Battery or if I´m
> able to characterize any kind of battery using an existing type
> (in spite of being lead-acid battery).
>
> Thank you very much!
>
> Maria
>
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> Thermal Energy System Specialists (TESS), LLC
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> Partner Madison, WI 53703
> USA
> P: +1.608.274.2577
> F: +1.608.278.1475
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David BRADLEY
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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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