Derek,

thanks for the feedback. I understand you don't miss any vital metrics.

I prefer "gen" because it's the view of the vehicle as a power generator, and because the abbreviation "v.g." is distinct, clear & easily memorizable, with a clear advantage over "v.v." or any "v.v2x." variant, and a nice coverage of the "grid" association on "v.g." as well.

"Generator" is also exactly the role of the vehicle in a V2X setup (acting as a power generator). Regeneration or recuperation is always a "re…" term.

The voltages are both meant to be at the "grid" side, as we already have the battery voltage as a separate metric, and as the charger voltage is also defined to be that. See the comments:

    OvmsMetricFloat* ms_v_charge_voltage;          // Momentary charger supply voltage [V]
…
    OvmsMetricFloat* ms_v_gen_voltage;             // Momentary generator output voltage [V]

On the energy sums, I considered using some "output/input" or the already defined "used/recd" scheme, but none of these is as clear as "grid".

I think "grid" nicely covers all normal V2X applications, also V2H, as even a home without connection to the public power grid still has it's own local in-house power grid. The only application where "grid" is a bit off is if you connect only one device to the generator. I think that's an edge case we don't need to take into account.

Regards,
Michael


Am 13.01.21 um 19:52 schrieb Derek Caudwell:
Hi Michael 

Despite mentioning it some time ago I haven't had time to progress anything around V2G, V2H. So good to see you are. IMO using v.gen could be confusing as it is not strictly operating as a generator, that is closer to motor regeneration back into the pack. How about v2x instead which covers both V2H and V2G applications? 

Is the voltage metric required as my understanding is this will be the pack DC voltage? 

Given there is the possibility of V2H, so not grid connected could you instead have v.v2x.kwh.output and .input?

Cheers Derek 

-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26