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dalathegreat / Battery-Emulator

This software enables EV battery packs to be used for stationary storage in combination with solar inverters.
GNU General Public License v3.0
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Tesla3 battery without PCS and discharge isues. #429

Closed StigWi closed 2 weeks ago

StigWi commented 2 weeks ago

Hi, I have a Tesla battery and a Fronius gen24 plus 6 inverter.

The PCS i burned, but BMS is sending signals, so I connected the battery to the inverter without using the contactors, My inverter has charged the battery to 85% but is not discharging the battery. The battery emulator says max discharges power 0W. Can I change it anywhere or is it a restriction from the BMS, that not accept the inverter to discharge the battery?

I have attached 2 pictures.

Thanks in advance and for a very interesting projekt. Stig

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dalathegreat commented 2 weeks ago

Hi Stig, We use the discharge allowed value coming from the PCS. If the PCS is removed, you need to hardcode in an allowed value for discharge.

This can be done by changing this line: https://github.com/dalathegreat/Battery-Emulator/blob/main/Software/src/battery/TESLA-MODEL-3-BATTERY.cpp#L282C28-L282C49 datalayer.battery.status.max_discharge_power_W = 10000;

Alternatively, I highly recommend sourcing a PCS! It will make using the battery easier

StigWi commented 2 weeks ago

Hi Dalathegreat You have solved my problem for the last 3 weeks. Now I can sleep again. Thanks a lot:) Regards Stig

dalathegreat commented 2 weeks ago

Nice! I will close this issue as completed, and make a note in the Wiki about this (needed incase the PCS is not used)