I am running the venus-os_dbus-serialbattery to manage the charge in my lithium bank and that part works quite well for me.
I also have 2x 5 Kw multiplus inverters but prefer not to run then in parallel all the time. So I got the idea from Andy from off-grid garage to use the second inverter as a generator to support the first generator when the loads exceed 4400 kw.
This may happen once or twice during day time if there is enough solar available.
It actually works quite well and the second inverter is in standby for 90% of the time.
Here is where I am currently getting stuck , the two inverters are sharing the same battery , here is the setup
if the second inverter gets activated ,there is an additional dc load
the DVCC from the serial bms is all over the place.
It seems like the system does not pickup the extra DC load from the second inverter and therefor the MPPT’s does not charge the bank anymore.
I added a smart shunt as a dc load but the system is still not “happy”.
Any ideas of what I may be missing here?
Configure the shunt as a DC system instead of a DC load.
The idea is that in a system with DC loads, the combination of all of them is measured by a shunt configured as “DC system”.
“DC load” is when you want to measure a specific item and have data for it on VRM, or want to display it separately in the DC loads breakdown in the new GUI. Nothing special is done with DC loads (since we don’t know how they might be connected).
May I ask, apart from because you can, why do you prefer not running them in parallel?
I get why Andy did it which was brilliant BTW, he had a different size Multi and Phoenix.
Must say back when I first saw him pull the stunt, my brain was broken for a day or 2 in trying to get my head around it.
!