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Hello guys!
I have three-phase ve bus system with two PV chargers.
I think I have some problem with in/out power calculation on VRM portal.
If I take one-day data from VRM its look like the PV to battery power more than the battery to consumption power. So how it's happening? If I take from battery less then I use where the excess power is going?
Hi @Alperin
A number of reasons:
-battery efficiency (charge / discharge, peukert, etc) + charger / inverter efficiency
-it can be that you use some of the energy the day after the charging has happened (and / or the other way round)
I have a similar Problem with the efficency of the battery. I want to share two examples with you and hope for an explanation.
Example A: DC coupled PV; 2xPylontech US5000; 3Phase MP2 setup
Example B: MP2 + 1xPytes 5,12kWh Battery; AC-Coupled (small system)
Is there sth I do not understand or have wrong configured? :)
Sounds about normal for pylontec. They are not as efficient as they make out.
The reabsorption cycle also affects efficiency.
Further comment lower voltage batteries tend to be a bit more inefficient.
Can you suggest batteries with higher efficiency?
