Hi all,
From time to time I notice that the DC grid feed-in is not balanced between the three phases. Today it was like this that one Multiplus-II 5000 (phase 3) was working at full load (~ 4000W), so it was quite warm while the other two were only feeding in a little. I needed to deactivate the DC-coupled PV feed-in excess and activate it again to force the system to balance the PV power across all three phases.
How should this work? Should it always distribute the DC PV power equally across all three phases or are there cases where the system decides not to balance the DC power across all phases?
Multiphase regulation is set to total of all phases.
I have some microinverters connected to AC out (about 3 kW distributed to the phases).
Clearly, if I have consumption on one phase, it will not be distributed equally to all three grid phases, but I would expect the PV power to be distributed equally to the Multiplus-II devices.
What do you think?
Best regards
Martin