EV Charging Station on AC IN - charging only from grid not from solar or batteries

Dear community,

I have EV Charging Station on AC IN. Consumtion is metered via inverters (no ET or CT).

All loads except the EV Charger are on AC OUT.

Explanation of problematic behaviour:

- when charging, only grid power is used - the system does not start to discharge batteries or ramp up solar

- the consumption of the EV is not summed up with grid consumption.

My initial idea was that Cerbo / EV Charger comms. are broken, but it is not the case. Also I did upgrade all FWs to latest versions.

Thank you very much for support.

2 |3000

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dognose commented · Jun 05 at 07:11 PM

Any chance you are using some mqtt-2-evcharger implementation there?

Some of them are not well programmed, and only report the AC-total to dbus. Then it will show the total values, but nothing on grid, because L1,L2 and L3 powers are left at 0.

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kyros32 dognose commented · Jun 05 at 07:18 PM

Nope, :-( MQTT is disabled, and no instance such as Node-red nor any other automation platform is implemented on this site.

Only a Fronius is AC coupled, but we use native Victron integration.

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kyros32 dognose commented · Jun 05 at 07:23 PM

That being said, no custom plugins or software that would interfere with dbus are implemented.

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dognose kyros32 commented · Jun 05 at 08:18 PM

hmm, Maybe enable Mqtt for a while, use MqttExplorer to connect to the gx-device and check if any values are missing?

- When charging, the topic `N/{portalId}/evcharger/x/AC` should have values in the subkeys /L1 /L2 /L3, like this:

(Voltage, current and PowerFactor are optional, but Power should be there)

Also during charging, you should notice a significant change on the values of `N/{portalId}/system/0/AC/ConsumptionOnInput`:

Best would be to take a screenshot of the whole `evcharger` and `ConsumptionOnInput` tree and post it.

These values should kinda match together.

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dognose kyros32 commented · Jun 05 at 08:23 PM

Oh, what kind of grid-meter are you using?

If you are using inverter-measuring, i'm not sure if the system will be able to show loads on the AC-IN side correctly.

At least the ev-charger it could display (mathematically), but not sure if that's what is supposed to happen.

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