There is any way to parallel 3 inverters of 10kw 5kw and 5kw to one dc bus feeding by batteries? Which kind of controller I will need to protect the discharge of the battery in this different loads on the dc bus? The three inverters will feed different loads not need to sync the phase. One of them could be connected to the grid but only when batteries are not enough will connect the grid, main use is off grid
Hi @Avasquez,
It’s possible, but there are limitations.
I would suggest the best model for this would be the Multi RS or Inverter RS, if it is otherwise suitable.
A key advantage of the Multi RS over the MultiPlus-II & Quattro inverters in this situation is the VE.Can support of the RS series does not require synchronisation of the inverters in order to support the DVCC (Distributed Voltage and Charge Control) features.
To get DVCC for multiple VE.Bus inverters they must be synchronised.
Unfortunately for now the Multi RS does not support parallel (support for this is in progress), so your are limited to ~5kW.
Inverter RS does support parallel, so you can have ~10 kW, but then doesn’t support AC input.
That’s fine if you can charge from the grid with one of the Multi RS instead.
When the main use is off grid the Victron system normally prioritises the load, rather than the battery discharge constraint. How that limitation will be enforced depends on the battery, and the inverter you choose. Not enough details here yet to say more with confidence.
The system will require a GX device, like the Cerbo GX or the Ekrano GX.