Voltage sensing in an Energy Storage System (ESS) with DC Solar
In an ESS system with an MPPT the charger of the inverter/charger is disabled.
This is because the MPPT charges the battery and excess solar power is being fed back into the grid. This process is controlled by the CCGX. To make this work, the CCGX will set the MPPT at a higher DC voltage than the inverter/charger’s DC voltage.
Assume there's a grid tied PV inverter connected to a MultiPlus II on AC-Out-1 with an MPPT charge controller connected to the same MultiPlus II. We'll use this diagram as an example:
Does this mean that the power output from the grid tied PV inverter will not be used to charge the batteries and only the power output from the MPPT charge controller will be used to charge the batteries?
As far as I can tell, the ESS guide doesn't make any mention of this inability to provide simultaneous charging from MPPT's and other energy producing units connected to the MultiPlus, in fact, it seems to imply that this is possible?
