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ele-dev / Huawei-PSU-Regulator

An automatic power regulator for linux systems
GNU General Public License v3.0
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Shelly Plus Plug S falsely detects overload and shuts itself down #8

Closed ele-dev closed 1 month ago

ele-dev commented 2 months ago

The Shelly Plus Plug S has a rated AC power limit of around 2.5kW, when you draw more it turns off as a safety feature. It happend at least 6 times in total (before and after FSM introduction) even though the PSU never really goes as high as 2.5kW (not even close). I guess the overload detection is unfortunetly very sensible to short high power spikes (maybe when going from idle directly >1kW charging power) and doesn't use a smart time hysteresis.

ele-dev commented 2 months ago

This is the oldest bug still present.

ele-dev commented 2 months ago

The latest changes to the max power and max current command checks, which have solved another issue might have solved or at least reduced probability of this issue too.

Since more than 3 weeks the latest fixes are under testing and this issue has not reoccured so far.

ele-dev commented 1 month ago

More then 5 weeks and the issue did not reoccur. Issue is resolved. Issue will be closed.