question

Natürlich gebe ich dies gerne bekannt.

3x Multiplus-II 48/3000/35-32 Firmware 490. *3-Phasen Verbund*

4x Pylontech US-2000 Plus

Smartmeter = Energy Meter ET340

Cerbo GX Firmware v2.73

@Rene87 Hast du min. 2.80~14 laufen?

In der Version gab es folgende Änderung

ESS:

Change the "Total of all phases" mode to be symmetrical: all phases are adjusted to convert the same amount of power from, as well as to, DC. In the past, this option primarily avoided passing power through the DC-bus to avoid inefficiency, but didn't take full advantage of the billing arrangement to use all the available power when there is a shortfall on another phase. Now it divides the work equally across the phases, thereby making the full capacity available, and with no impact on billing.

An example: at night, no solar, there is a large load on L1 - say 6kW. And no load on the other phases, and a 3 x 3kVA inverter/charger configuration. Old: the L1 inverter/charger would be at max power, discharging, which resulted in buying ~3.5kW. New: all three inverter/chargers are each doing 2kW, zero Watts on the meter.

Similarly in a excess PV situation: if there would be 6kW excess PV on L1, and the same inverter/charger configuration, then in the old situation it would charge the battery with one inverter/charger only, and the rest of the power would be sold back to the grid. In the new situation, it all inverter/chargers will be charging at approximately equal power, and the total being 6kW of charger.

Lastly, note that the balance of feeding in excess PV power coming from solar chargers, has not been changed. There is no need to actively make that symmetrical, since when there is so much energy available that its necessary each inverter/charger will automatically start operating at full power. No need to actively manage that.