There have been many posts regarding CCL limit not being respected when grid feed in is Enabled.
So, if DVCC is set up with grid feed disabled the BMS throttles the MPPT charge current to suit, which respects the battery charge requirement in the latter state of charging (90-100%), as is desirable. Enable Grid feed in and then this allows the MPPT’s to free run to the max, potentially exposing the batteries to high charge current when they would want to throttle back.
- I would like to request a feature in the ESS allowing Grid feed in to be automated when batteries reach 100% SOC? It is possible to limit the grid feed with a slider switch already of course, but from my experience once the BMS has completed the charge to 100% the batteries only charge and discharge small amounts (based on load and PV available). I don’t believe it would be an issue if the grid feed enable was switched multiple times as long as DVCC was in charge of current limit while batteries less than 100%?