According to the manual of the easysolar, solar energy is used to lower ac consumption and only when excess solar energy is present the batteries are charged with the excess of solar energy. In my setup this works fine as long as the battery does not reach the SOC low setpoint (= ESS#1 message appears). Once SOC low is reached, all the solar energy is used to charge de battery. Some minutes later the SOC low disappears and the battery discharges again till SOC low is reached. So there is always a charge and discharge cycle that reoccurs. This does not seem a correct operation of the easysolar ? I cannot find a setting in the VEconfigure to undo this cyclic charging and discharging. Has anyone other experiences with this behaviour ?
That is the way it is designed.
Once ESS #1 occurs, PV is used only to charge the battery.
When the Minimum SoC + 3% is achieved, the PV and battery are used to power the loads.
If the loads are more than the PV power, it will drain the battery back down to the Minimum SoC, and start over again with ESS #1. Once the PV power exceeds the loads, the cycling stops.
Personally, I don’t like this zigzag SoC effect.
I’ve chosen to write a script that alters the Maximum Inverter Power dynamically based on the available PV power (Python using Modbus). It could probably be done in NodeRED as well. However, this is not a beginner’s solution.
Thank you for your reply. I will address this issue to Victron Netherlands. This logic does not seem to be correct when using the ESS assistant with a grid tied setup.