Hi,
Could someone tell me what the difference is between :
solarcharger/Pv/I
and
system/Dc/Pv/Current
I am trying to create a panel that displays the sum of the 2 solar chargers. The issue is that "solarcharger/Pv/I" reports correctly for each instance, but the value retrieved for "system/Dc/Pv/Current" is more than double the cumulative value of the solar chargers?
It looks like the 50A is the Total PV Charging current of a 48V system
I see in the manual the setting I have chosen is correct.
I have 2 solar chargers, each limited to 45A. This value does change based on the PV power generated but is not ever equal to the output of both chargers. I suspect this value is not reporting correctly.
I think you might be confusing PV input current (into the solar charger) with system/Dc/Pv/Current - which is the sum of the output/charge current from the solar chargers.
2573W / 47A = 54.7V, which is a realistic battery voltage for a 48V system (you don't show the battery voltage in your Grafana screen image).
The solar chargers convert power between the PV input and charger output - so the voltage decreases and current increases. Power remains constant, apart from conversion losses.
Thanks Mark. Yes it is a 48V battery system. I see your point. I'll give this some more thought, thank you.
No worries...
Double check the path you have linked to North MPPT 'PV I (in)' - in the screen image above it seems like you may have accidentally linked it to system/Dc/Pv/Current since it is showing the same current as 'Total PV Current (out)' and 113V x 9.9A equals alot more than 310W.
