I think this bug is present for a long time already, using the latest beta (3.50~13).
I have a very old EV charging point that can not load balance, furthermore I have AC coupled PV on phase 1 (attached to AC-in).
my DESS is a 3 phase system with 3xmultiplus 5000, victron grid meter and a third party battery (Seplos)
So what happens at noon, low price, so car charging and battery charging, and solar production…
Without limit charge current:
Car takes 16A per phase, solar gives 10A on phase 1. Multiplus 3 phase system is loadbalancing when charging the battery. this results in ~110A of charging power. Phase 1 takes 16A (there is sufficient capacity on phase 1 due to the PV system). Phase 2 multiplus takes 5A, phase 3 also 5A.
This is the good situation! Multiplus 2 and 3 are taking into account the grid import restriction in the good way, and multiplus 1 is correctly taking more, since there is capacity left.
Now with charge limit, set to 110A:
all three multiplusses take ~5A, so the extra capacity on Phase 1 due to solar is not taken into account. the result is my battery charging with ~75A.
Are you sure that the MP’s should charge in a separate order? So L1 charge more than 2 and 3? And when you turn “Limit charge current” off does it behave different? One should say this setting has to do with the DC side of things and not AC.
I would like to try this out, my system has something similar but in the oppostite direction. So I am going to watch if it does load balance in the way you describe at discharging. I’ll let you know what I see.
But as you can see the MP L3 is slowing down in order not to exceed the 25A max. The others on L1 and L2 are still going full throttle. And yes, “Limit charge current” is switched on.
(I can only add 5 pictures because suddenly we all became new users.)
I’ll post some screenshots tonight when the car is charging. My ‘issue’ is happening with the peak shaving functionality. So lots of power on AC-in side of multiplus…
Car is charging at 16A per phase, there is some sun on phase 1
my peak shaving grid limit is respected at 23A
because of sun on L1, the multiplus on phase 1 is taking more charge.
(I have nothing on AC-out, so this is really loadbalancing by grid meter. perfect!)
