question

maka avatar image
maka asked

Microgrid AC loads in VRM/color controll

I have a microgrid solution with Quattro and fronius without grid
Also a Can-MPPT directly on battery thrue a BMV.
System works very well.

However it would be great to be able to see real AC loads in color controll and especially in VRM advanced to get a trend of it .
Now you have to add PV inverter power (fronius) and AC loads (Quattro) and subrtract battery charging power minus MPPT charge power.

txs Marcus


AC PV Coupling
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2 Answers
Paul B avatar image
Paul B answered ·

OR connect a AC sensor to the Microgrids output and setup a ac sensor assistant and the micro grid will be added to the solar input and the gx device will do those calcs for you

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maka avatar image
maka answered ·

Ok but isnt that ac current assist to show what your PV inverter produce ?
In my case I have a Fronius so its already added as a solar input
1629465943437.jpeg

And in this situation the console is showing the right AC loads
But in picture below from another situation its not.

1629466053090.png

In this situation PV inverter produces 4132W and the PV charger produce 50W
But the batteries is charged with 1800W.
So the PV Inverter actually charge the batteries thrue the the quattro with 1750W

And AC loads shows 0 (actually the quattro load is -1750W)
And my total AC load is 2380W (4132W-1750W)
That is the value that I want to see and/or log

Br Marcus



1629465943437.jpeg (68.7 KiB)
1629466053090.png (35.2 KiB)
1 comment
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shaneyake avatar image shaneyake commented ·

This is most likely because the position is incorrect.

Got to Menu -> PV Inverters -> fronius - > Position and set to AC-OUT.

This will tell the VRM system where the inverter is and should then correctly calculate the values.

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