Dynamic ESS - charge battery slower

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guru77 asked Apr 17, '24

Dynamic ESS - charge battery slower

Hi!

I have dESS active and would like to delay battery charge in order to maximize grid export and solar yield.

My max grid output is set to 4.600 - from 12 to 14:00h, the complete DC input is used to charge the battery - solar to grid output is way less than 4600

Later on, the MPPT is forced to slow down in order to get max. solar of 4600 output + AC loads (300W), there would be > 3000 W more solar to use but not needed.

Is there any way to slow down the DC charge from 12 to 14h in order to export more and charge the battery later?

Thank you!

dynamic ess

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Modifications Space

Node Red Space

Answer 1 · 2024-04-17T10:06:34Z

guru77 answered · Apr 17 at 10:06 AM

this is what I don't like.

Full DC power is used for battery charge, but solar forecast gives more than enough for charging with less power longer, but feed in to grid always max (4600W)

Bildschirmfoto 2024-04-17 um 12.03.44.png

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Answer 2 · 2024-04-22T08:22:20Z

guru77 answered · Apr 22 at 08:22 AM

solved by setting the max charge power in d-ess settings manually to 2kW

any idea how to change this by node red?

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