I want to update my single phase system to a three-phase system with three Quattro driven by a Cerbo GX and raspberry Pi. My system is composed of a battery pack (30kWh) and a connection to the AC electrical panel of a photovoltaic system which have his own inverter (Fronius inverter in fact).
I use the mode 3 to drive my inverter and I develop a smart system to charge/discharge my battery in function of my needs and a prediction of the production. I understand that my cerbo GX must be connected in series with the three inverters.
I did not find much information on three phase system in the third mode, how does it work? Did the Cerbo-GX send the order from my code to each register of each inverter? or should I drive independently each inverter by changing the IP address?
I read in Cerbo datasheet that the 37 register is for L1 and 40 register for L2, and 41 for L3. For the moment I write in the 37 register to control the power in my inverter and the register 33 to control charge and discharge.
Does the register are the same in three phase system than in the single-phase system?
Thanks for your help…