Hello,
Thank very much you for your time and your explanation. Very clear. I’ll use some ideas.
Hello, concerning your calculation flow. Is “Insight W I/E w/o EV” a number variable? And which value did you gave to this variable?
Thanks for your help!
The variable Insight W I/E w/o EV is indeed a variable number. I could translate this somewhat strange name as ‘average balance between the power entering and leaving the house, without taking into account the charging power of the electric vehicle’. This number changes constantly depending on the amount of sunlight and the house’s power requirements.
If we put aside the fact that this is an average calculated every 70 seconds (first screenshot above), this number represents the residual power available to charge the electric vehicle. If, for example, the solar panels produce 3000W and the house consumes 500W (note: still without taking into account the possible charging of an electric vehicle), this variable will be 2500W, and it is therefore this number that is used in the main flow to control the charging station. Personally, I like to have a negative number when there is power available for charging, which is why in my calculation flow I used ‘House consumption’ - ‘Solar production’, and not the other way around. These values are provided by the solar panel inverter, but if, for example, you have a Shelly 3EM sensor, you don’t even need to do this calculation. However, as this calculation must be done without taking into account the vehicle’s charge (otherwise the flow will not work properly), this is why my calculation is ((house consumption - car charging power) - solar production). The car charging power value is provided by the charging station.
