Today, after reaching 100% of battery ESS show some strange behavior.
Solar and generated power is jumping from 0 to 3000W. Sun is permanent.
What is happening?
asked
Solar power is jumping around once battery is fully charged
What battery is this? This is most likely the BMS instructing the system to stop charging, or even force a discharge, possibly due to balancing etc since it is reporting 100% SOC and your voltage is hovering around 56.8V.
Different batteries will cause different behaviour.
Load is non-existent so the difference is the battery deciding to start/stop charging.
Try pull CCL/CVL limits etc from VRM assuming this is a managed battery.
Please keep topic titles constructive, it won't encourage people to help.
My topic is more than constructive. Assuming prices for Victron equipment it was supposed to be operating without any issues. But it isn't.
Huge amount of equipment's options and settings are not described in documentation at all and uses have to search internet articles/forums to find right way in system's configuration.
I still have NOT any response to question about:
Why ESS is losing 10-20% of solar power after battery was charged? In this case Cerbo GX is decreasing output Inverter's power for 10-20% under max possible.
@AleksejS What type of batteries are you using? Are they Victron batteries?
@AleksejS what is the model of the MPPT controller please? Is the MPPT controller connected to CerboGX with VE.Can?
What is the model of the inverter charger? What type of grid power meter is used( as the numbers for grid don’t make sense to me)?
What is the capacity of the battery bank? How much solar power do you have?
Can you please screen shot the ESS configuration?
By the way these strange power jumps was temporarily solved by switching on DVCC.
It seems this option is not for this case, but testing almost all available F/W versions, this was the only one solution to keep system away from power jumps.
Interesting - after how long time the battery will explode in power jumps, would You like try to test?
Looks as if the solar side is too big for the batteries, plus configuration issues. There's too little here to go on. Full description of all components, plus settings for the MPPT, multi etc would help.
