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



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


-- 
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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@tess-inc.com

http://www.tess-inc.com
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