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Tomi**Deye EV charger – inverter oscillations**
TL;DR
Deye’s EV charger coupled with Deye’s inverter in ‘solar only’ mode of charging is misbehaving when the house battery is full – there are power swings / oscillations that are not normal IMHO.
Sometimes inverter even drops PV production to zero when EV charger is ramping up. The cycle repeats until the afternoon, when the inverter starts to use the battery and the power swings stabilize. Who is chasing who?
Setup and settings:
- 12,5 kWp panels
- Deye’s battery and BMS
- Deye 3 phase hybrid inverter, in “Zero export to CT” mode (set to 20W)
- Deye’s 22kW EV charger connected to inverter’s grid port
- EV charger in ‘solar only’ mode
- EV charger power limit to 8kW
Graph of power oscillations:
It looks like inverter control loop oscillation.
When charging in ‘plug-and-play’ mode, it the charging power is stable and PV power too.
If anyone knows the solution / which setting should I adjust, please let me know.
https://blog.rozman.info/deye-ev-charger-inverter-oscillations/ #Deye #Evcharger #Solar
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