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reptilex / tesla-style-solar-power-card

Home assistant power card mimicking the one tesla provides for the powerwall app.
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Is this the right way? #147

Open Lazulent opened 1 year ago

Lazulent commented 1 year ago

The Tesla flow is a very attractive diagram but it ignores the essential fact that there is an inverter converting between PV/Battery DC and Grid/House(Load) AC. The inverter provides data in/out from each of these 4 sources. Trying to derive the Tesla Diagram's 6 notional flows from the 4 data points is a nonsense. We can't put a flag on every electron. Can't we please just add a pretty inverter into the centre of the Tesla flow and use the available real data. Power goes into the inverter, power comes out of the inverter. Much simpler.

Adminius commented 1 year ago

I would do it this way: Add "losses intity" to PV and to Battery bubble. You should have AC and DC Power from your inverter as an info.

PV_losses_entity: DC_production (-battery_charge)-AC_output => system losses with PV

Battery_losses_entity: Battery_Power(=DC)-AC_output= system losses with no PV power but DC battery

add each to the curresponded bubble and the values will be ok.

I have now added my systemlosses to the household load (yeah, not realy cool but it works) and now PV Production is ok (but household is higher...)

EDIT: Better way is another approach: User can provide values for pv and battery bubble as an extra entity, in this case no sum will/should be calculated