16 x 455W panels (8 NNE and 8 ENE. Total installed kW PV of 7.28kW
1 X Victron Smartsolar MPPT RS 450/100
1 x Victron Quattro 48/8000 VE Bus Inverter
4 x Pylontech US3000C batteries (14kW storage, recommended charge current is 37A per battery)
Victron Cerbo GX
I am battling to see more than 4.2kW out of my PV array at any time. The MPPT seems to be throttling the output. When the house load is around 5kW, it is discharging 1kW out of the batteries even with full sun midday.
What is holding the system back? I have repeatedly asked my supplier but they say it is functioning as designed. Not convinced its right, I should be able to see closer to 6kW at least.
Any suggestions where I need to start checking would be welcome
Depending on your array tilt angle for each array you will start charging earlier @ a high rate and also finish later but lose during the middle of the day when they 100a limit is reached. The 450/200 would solve this.
Yes, but we can see his battery voltage is exceeding 50V, so he should be obtaining 50x100 = 5000W on the MPPT.
It is almost like it is behaving as if only one tracker is being used, but the picture does indicate both trackers… I agree that shouldn’t doesn’t look right, unfortunately that doesn’t help the OP solve the problem.
I can go along with this theory. To test it I propose one string is disconnected, then if the other string starts to deliver more than it does now. Then that would indicate there is some substance to this theory.