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Re: [TRNSYS-users] Questions about inputs of Type48d and Type94
Andrea,
- Type94 Input 3: Load voltaje. I'm working with 24V (voltage of the
designed system), but I do not know what value is right, or I have to
use 0 (default), or 45V (datasheet of panel: Current-Voltage &
Power-Voltage Curve).
There are essentially two kinds of PV systems: systems in which the
panels are directly connected to a load and systems in which there is a
maximum power point tracker (MPPT) between the panels and the load.
Either kind of system can have inverters or batteries. If the PV is
directly connected to the load (which is rare) then you set input 3 of
the PV array to the load's voltage and you use the array power, current
and voltage outputs. If the PV is connected to an MPPT then this device
continually adjusts its operating voltage to keep operating at its
maximum power point. If your system has such a device then you don't
need to set the load voltage input (the load voltage is determined
internally by the MPPT) and you use the array power at maximum power
point outputs.
-Type48d
Type48's modes are designed to work in conjunction with certain Type47
modes. In order to answer your questions, I would need to know a bit
more about your system configuration. What I would advise is that if you
have not already done so, read the description of both Types47 and 48 in
the 04-MathematicalReference manual. If you are not able to figure out
how to set up the Types then please send your questions and your project
to your distributor for direct assistance.
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@tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com