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mitsch avatar image
mitsch asked

DC Grid Feed in at lower % Battery

Hello,

my system: Multiplus2 5000, Froniur AC 3phase, several DC charger, Lithium Battery without BMS connection.


It seems that DC-coupled PV - feed in excess start first 95% Battery, how to adjust to start maybe at 80% SOC? Or is a connection to BMS necessary? Or would the Victron Smart Shunt help to make the system run my way?


Thanks for your help :)

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2 Answers
cacer avatar image
cacer answered ·

i use a flow for nodered to set the gridsetpoint deeper if the weather over the day will be sunny and the battery is above 40%.


i found no other way to feed in early.

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mitsch avatar image mitsch commented ·
You have also a AC System. So every second.. calculate.. earnings AC-consumption+DC Chargers= gridset point?
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cacer avatar image
cacer answered ·

Sorry. Just dc Solar.

My mp2 5000 was on full load when battery was full.

So i made a flow to feed in earlier when Solar forecast in the afternoon is high.

Now, on good days, i feed in from the morning, above 40% SOC.

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