[TRNSYS-users] Information about PV pumping system equipped with battery.

[David BRADLEY]

Pietro,

> ·PV pumping systems requires two kind of power conditioning systems 
> when connected to battery and AC pump, charge regulator and DC-AC 
> inverter with MPPT. What I understood is that the power conditioning 
> system that can be found in the Trnsys library models both. Is it 
> right? Which is the connections scheme between Type 48c and a battery? 
> I had problems in running the software and displaying the energy 
> stored in the battery and the SOC of the battery.
>
Your understanding is correct. I am not sure why you had problems 
getting the battery and charge controller to work properly and would 
recommend that you send your project to your distributor for assistance.
>
> ·In the case I want to simulate a DC-DC controller, how can I do?
>
there is a fairly generic power conditioning model in the standard 
Electrical library; look at Type175. Depending on what your controller 
does, it may be necessary to write your own component. I have had to do 
this in a number of situations where I had a complex master controller 
that was dealing with a bunch of different input sources and loads.
>
> ·Both DC and AC motor-pumps have a flow-speed that depends on the 
> power input, how can I simulate it in trnsys?
>
there are a number of pump models in the TESS Hydronics Library that 
take power as an input and determine flow. Look at Types745, 746, and 749.

Kind regards,
  David


-- 
***************************
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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