AC coupled PV throttling down unnecesarily

DIY
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1

Hi guys, greetings from Czech republic,

i have a little trouble with my PV. My setup in general is this:

Three phase on grid with no intended grid feed.

2x Multiplus II 5000 48V on each phase.

All loads are on the output of MP II.

I have 4440 Wp on Victron MPPT 250/100 and AC coupled Fronius SYMO 10 kW (9900Wp in panels).

30kWh Lifepo4 battery storage with no BMS coms to Cerbo GX.

It works just fine but does one think which troubles me, because it doesnt fully utilize AC coupled PV. ESS charging limit is set to 12000 W, but the battery is primarily charged from MPPT and the system limits AC Coupled PV even in situation, when the excess can be used to charge the battery (as seen in screenshots). This leads to situations when iam efectively loosing even tens of kWh a day due to unnecessary power reduction.

Can you tell me how it can be fixed?

Thanks for your advice

Screenshot_20260306-091040_VRM
Screenshot_20260306-091040_VRM1220×2712 233 KB

Screenshot_20260224-102503_VRM
Screenshot_20260224-102503_VRM1220×2712 230 KB

Screenshot_20260220-120032_VRM
Screenshot_20260220-120032_VRM1220×2712 230 KB

2

What are the settings here?

IMG2663
IMG26631320×741 107 KB

3

I have the DVCC turned off.

4

If your bms is controlling charge it self it can be possible that this is all you can get in it

5

There is no comunication between Cerbo GX and BMS and in JK-BMSes for both battery packs i have set 140A charge current limit, which is over 6000W. If there is a problem with over charge the BMS would disconnect,. Thats not the case.

6

What settings are made in VE.Config?

7

I will take pictures on Friday and put it here.