we are designing an Off-Grid solar system upgrade due to higher power demand.
The system now consists of :
1xQuattro, 1xGen (wired as single phase), 2x PVstrings, 2xMPPT, 1xBattery String
After the upgrade :
3xQuattro, 1xGen (wired as three phase), 4x PVstrings, 4xMPPT, 2xBattery String
The upgrade system will be controlled and monitored by a GX control unit (Cerbo-GX).
The generator is used as a backup power source, to feed the loads and charge the battery string, and it will be rewired back to three phase to gain some power lost by the single phase wiring.
The loads are single phase ones, and will be evenly distributed to the three phases by their nominal power, but the actual power distribution depends on the customer usage, and time/day.
My concern is the balance of the generator currents when the loads are not balanced.
So, is it possible with the Quattros to equalize / balance the three AC input currents (from the generator) while feeding loads on their outputs?
In the book "Energy Unlimited"
page 67, example 12.3.2, we can see the statement :
"One attractive feature of the Multi’s is that they will automatically balance the load of the generator: the Multi’s will take most power from the phase(s) which otherwise would have the smallest load."
What is saying there ?
(is this the feature I am looking for, or I am reading what I would like to read, is this possible with the Quattros?)