System with two inverters

[harmendp]

Hello all,

I have came across this project via ChatGPT, and looks very promising for my needs.
However, I don't seem to be able to get my system configured correctly.

I have two invertes: one hybrid one (PV + battery) and one non-hybrid (only PV).
For one reason or another, I can't get this configured correctly.
Battery doesn't seem to be charged by the second inverter. And the hybrid inverter shows both AC->DC & DC -> AC power.
This is not possible off course.

Not sure what is wrong. Do I need to make an explicit connection between the second inverter and the battery maybe?

Thanks for any hint!

[TrentHouliston]

If you have both DC->AC power and AC->DC power at the same time it means that your pricing information isn't configured properly. Either your import/export price ends up being the same or they're flipped so "using" power is valuable (so basically burning electricity). In this when it suggests both it means something is wrong, but what it's trying to tell you is it wants to export at one power for the first portion of the time, and then import for the other.

Like I said something is wrong.

For your other case though, you should be able to just attach the other PV directly to the switchboard, with the other PV and battery behind the hybrid inverter.

If you feel comfortable to do so, you can share a diagnostic file and I can take a look at it and see exactly what's going on

[harmendp]

Hey,

Thanks for the quick reaction!

Given your remarks, I went over the config again with the docs next to it. Grid prices were configured correctly, however it turns out I used the wrong sensor for the open-meteo forecasts (forecasted power now, in stead of the full day sensor). Once changed, everything seems to be working very well.

For those with a similar setup: I used an inverter with AC-> DC = 0 for the non-hybrid inverter to account for the conversion losses.
Now I still need to find a way to add my EV. Will try to modelling it as a second battery maybe.