At the moment, I’m using an AC inverter, but I want to switch to MPPTs. I have a south/north configuration with a total of 23 panels, each with a peak output of 600W. Twelve panels face south, and eleven face north.
I want to be able to charge my three batteries (3 × 16kWh = 48kWh) and prevent feeding power back into the grid when energy prices turn negative this summer. MPPTs charge the batteries to full capacity, but what happens after that? Do the MPPTs automatically shut down when the batteries are full, or is the excess power handled in another way?
I currently use three Victron MultiPlus-II units with a Cerbo GX and the ESS system. I can configure the panels in multiple strings if needed, so I’d like to know which MPPTs would be most suitable for my system. Any advice on the best setup would be greatly appreciated.
I was also considering a similar configuration, but I would prefer to use only 2 MPPTs instead of 4 due to cost. Would it be possible to use one MPPT with a 6S2P solar panel configuration and the second MPPT with a 6S5S configuration? I know the second setup isn’t optimal, but would it still work effectively? Also, can the MPPT handle the power from this configuration?
Additionally, for an MPPT 450/200, is the maximum output power calculated as 200A * 16S * 3.2V = 10.24kW max?
And 450 is the maximum input voltage? So this MPPT can handle up to 9 panels in serie with a panel with a Voc of 50.05V (450/50)? Just wondering how to handle these numbers in calculations?
What are looking at? I have the 450/100. I have 390Wx7 at 11A per a tracker. East and west facing. The MPPT trackers do not work well with north facing or south depends where you are. I have 7x390W per a tracker @ 11A you can go to 16A and I have 2730W per a tracker that would be 4 x 2730 10920W. My MPPT is about 250V from 360V OC. You have room to move and also a 20amp max input at 360V MPPT 20A for 7200W per a tracker but I dont know how to get this and have not found found a victron representive to confirm.
The earlier mentioned 450/200 should work well. You only need one unit. It has 4 trackers. 2 north, 2 south.
Max charge power is 11.5kW. You theoretically lose 2.3kW, but I doubt you’ll have all the panels getting max sun at the same time. Each tracker can charge 4kW, with 6 panels you’re under that.