[TRNSYS-users] batteries models

[Pascual, Carol]

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
CC: 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

David BRADLEY                      22 N. Carroll Street - Suite 370

Partner                            Madison, WI 53703

                                   USA

P: +1.608.274.2577

F: +1.608.278.1475

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***********************************************************************

Thermal Energy System Specialists (TESS), LLC

David BRADLEY                      22 N. Carroll Street - Suite 370

Partner                            Madison, WI 53703

                                   USA

P: +1.608.274.2577

F: +1.608.278.1475

E-mail: bradley at tess-inc.com<mailto:bradley at tess-inc.com>

Web Pages:  http://www.tess-inc.com    and      http://www.trnsys.com



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