I've got the following off-grid setup:
- 1 BlueSolar 75/15 MPPT on PV string 1
- 1 BlueSolar 100/30 MPPT on PV string 2
- Venus running on a raspberry pi
- Phoenix Inverter
- 12V AGM battery bank
- Smartshunt
The MPPTs & smartshunt are connected to the Venus using a VE.direct-USB cable. The inverter is connected to the Venus using a MK3-USB cable. Both PV strings suffer from occasional shading at different times throughout the day.
Is there any way to enable synchronized charging on both MPPT charge controllers? Either controlled through the Venus, or controlled by an assistant running on the inverter? Right now I get into situations with one controller in float, and the other one still in bulk. One trying to reduce power to reduce voltage, the other doing the opposite...
From the documentation I found so far it seems impossible. Ve.smart networking is not applicable as I'm using Bluesolar instead of Smartsolar. The ESS assistant I can't use because I don't have an AC-in.