Power losses

[WernerKr]

Is your feature request related to a problem?

Power losses! Why is a negative value not taken into account? " if "uint" in definition and value < 0: value = 0 " My Deye 2mppt microinverter (Deye Sun-M80G3) therefore never showed power losses, although power loss does occur.

Describe the solution you'd like

I therefore changed it to "value = abs(value)". This means that this microinverter also shows power losses

Describe alternatives you've considered

In my opinion there is no alternative

[davidrapan]

Hi @WernerKr! Thank you for your input. Do you really think that power losses calculated essentially in reverse will produce valid result (output > input)? I'm guessing the main issue is probably with low update interval of this type of microinverter, right?

[WernerKr]

As I wrote, without this change, power losses were never recorded on the DEYE SUN-M80-G3. Only after my change on November 28th were power losses recorded. For comparison, the graph of the DEYE SUN-M160-G4 when starting in the morning (example November 25th) - these values ​​are also missing), the inverter needs more power than is supplied by the panels.

[davidrapan]

I do understand your POV but the issue is proly w/ source of input power value (precision or out of sync w/ source of output power value because it's calculated in HA from input voltages and currents) rather than w/ "incorrect" calculation of said losses. So even when abs produces value > 0 it's not what you think it is and consumption of the microinverter has to manifest either w/ output power < calculated input power or w/ negative output power value which would indicate that solar panels don't produce enough energy to power the microinverter.

[WernerKr]

it's not what you think it is and consumption of the microinverter has to manifest either w/ output power < calculated input power or w/ negative output power value

I am aware of that. Even if the value is not correct for my deye_2mppt micro inverter, I personally think it is better to display a value than no loss value at all. Every micro inverter has its own consumption. I record the actual value with an SDM230 independently of the data from the micro inverter.