[TRNSYS-users] Battery and load correlation charge and discharge via charge controller

David BRADLEY d.bradley at tess-inc.com
Mon Jan 25 11:50:25 PST 2016


Ayda,
   If you are using the latest version of TRNSYS (17.02.0004) then there 
is an example in the ..\Trnsys16\Examples\PVT\ directory that shows one 
way of using Types47 and 48 in combination with a PV.
kind regards,
  David


On 01/25/2016 06:46, Ayda Esfandyari wrote:
> Dear All.
>
> I am currently trying to simulate and model a PV charging station in 
> TRNSYS  that would allow charge discharge of Battery and load.
>  Since I am new TRNSYS user, I would really appreciate if you could 
> please take your time and providing me with some of your valuable advise:
>
>
> First of all, I am having major difficulties to understand the correct 
> connections in TRNSYS between each of the TYPEs /components.
>
> Ideally I would have liked to use a "Type 194 " PV and also  have " 
> Current as input Battery type " and connect the battery to  charge 
> controller which allows "MPPT with monitoring state of voltage and 
> charge".
>
> As I mentioned above, since I am having difficulties  to identify the 
> appropriate input/output connections between the TYPEs, I decided to 
> keep the model more simplified and used the following :
>
>   *  Type 94 (PV)
>   * Type 47 b ( Battery)
>   * Type 48 b ( Controller)
>
>
> However, I can not see the correct control and correlation between 
> charge -discharge of battery and load.
>
> My aim is to have a system that would store the  PV generated 
> electricity into the battery bank ( in the presence of sunshine) and 
> discharge the battery when there is load demand.
> I do not see battery being discharge to serve the load when I try to 
> monitor the Fractional state of the charge of the battery.
> As you can see, I have tried to simplify the choice of the load, So 
> the load is only present at night time when there is no sunshine.
> Therefore the controller does not need to make any adjustment to see 
> whether : to charge the battery from sunshine or discharge the battery 
> and serve the load.
> Although this would be the ultimate aim of my model,
>
> I was just wondering whether you could please provide me with some 
> advise and suggestions in relation to my model.
> Please take a look at the attached model for further information.
>
> Many thanks again for all your support and feedback.
>
> Kindest regards
> .
>
> -- 
> Ayda Esfandyari
> Solar PhD Researcher
> Dublin Energy Lab
> Focas Research Institute
> Dublin Institute of Technology
> Kevin Street, Dublin 8,
> Ireland,
> +35314027929
>
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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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