DC Grid Feed in at lower % Battery

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mitsch asked May 25, '23

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 :)

feed-in limit

2 |3000

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Modifications Space

Node Red Space

Answer 1 · 2023-05-25T15:37:38Z

cacer answered · May 25, 2023 at 03:37 PM

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.

1

2 |3000

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mitsch commented · May 26, 2023 at 10:47 AM

You have also a AC System. So every second.. calculate.. earnings AC-consumption+DC Chargers= gridset point?

0 ·

Answer 2 · 2023-05-26T22:11:56Z

cacer answered · May 26, 2023 at 10:11 PM

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.

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

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