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pavel-cervenka asked

EV Charging Station - automatic mode for Inverter AC input connection

Hello,

I am using EVCS for a week. Firstly connected as "Inverter AC output" - everything works smoothly, manual and automatic mode as well. No complaints.

But then I changed electrical connection and setting to "Inverter AC input". Manual mode work fine. But Automatic mode sucks. If I use automatic mode, charging start at 6A and increase amps step by step. But it dont stop on PV excese power point, it continue increasing till max charging current setup is reached. Lets say, PV excese is 5kW, charger charge my EV at 11kW.

Is it EVCS bug or feature? Or could I change any other parameter in my ESS?

my system: 3x Multiplus 5000, Cerbo GX, 2x MPPT 250/100, 14kWh Pylontech, EVCS.

Cerbo, MPPTs and EVCS with last FW update.

Thank in advance for any help.

Pavel


ev charging station
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Lucian Popescu (Victron Energy Staff) avatar image Lucian Popescu (Victron Energy Staff) ♦♦ commented ·
Can you share a 10 sec video of the main page when this is happening?
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pavel-cervenka avatar image pavel-cervenka Lucian Popescu (Victron Energy Staff) ♦♦ commented ·
Thank you for your reaction. I will do soon. Now I have to wait for better weather, it is cloudy here from yesterday :( No excesses now.
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pavel-cervenka avatar image pavel-cervenka Lucian Popescu (Victron Energy Staff) ♦♦ commented ·

Here is a video of auto mode from charging start to reach of maximum charging current which not respect of PV excesses. Looking forward to any advice how to solve this issue.

Pavel

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auto-mode.mp4 (39.5 MiB)
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Lucian Popescu (Victron Energy Staff) avatar image
Lucian Popescu (Victron Energy Staff) answered ·

Ok, but while the EVCS is sending more power to the vehicle, the measured grid power remains the same. So something is wrong with the installation. Where is the EVCS connected? Is before the meter?

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pavel-cervenka avatar image pavel-cervenka commented ·

EVCS is connected on Inverter AC input according picture...

there is no external energy meter. Energy is measured by 3x Multiplus I. inverters (3 phase).

1683194454298.png


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1683194454298.png (60.9 KiB)
Lucian Popescu (Victron Energy Staff) avatar image Lucian Popescu (Victron Energy Staff) ♦♦ pavel-cervenka commented ·

That's why! You need to add a meter or connect the EVCS on the output of the Multi.


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pavel-cervenka avatar image pavel-cervenka Lucian Popescu (Victron Energy Staff) ♦♦ commented ·
hmm, OK I have to buy ET340 meter. But why? Multi have data about grid feed power, EVCS have data about charging power. I think it is only about math over these data... Is there any chance to solve this in new FW release?
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pavel-cervenka avatar image pavel-cervenka Lucian Popescu (Victron Energy Staff) ♦♦ commented ·

One more question Lucian. If I add ET340 meter as you mentioned, EVCS will be connected on "Inverter AC input" as now. What will happen when I will charge lets say over night when no PV excesses? EVCS will be feeded by the grid or by the battery through the Multis?

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