this post was submitted on 31 May 2024
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[Dormant] Electric Vehicles (Moved to [email protected])

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[–] [email protected] 1 points 8 months ago (1 children)

So you don't understand what 3 phase means, which is totally okay. Just say that instead of making up an incorrect answer. Saying "powered by at least a part" isn't three phase, that would be single, two, maybe split-phase like normal North American domestic power.

Which is what they clearly state in multiple sources

The other issue you have here is that J1772 is rated for 300v, just like J3400 is rated for 300v. It's a software choice, and an EV plus connector that support increasing voltage don't need a new connector. In fact, adding 277v support to J3400 will require J1772 support anyway. J3400 is simply J1772 with a new form factor proposed- same as it has always been. But it combines the DC pins from Combo 1 into the existing J1772 / J3400 pins.

I am not sure I understanding you correctly, you wanted them to feed all 3 phases to charging EVs?

Yes.

Batteries are DC

What does this have to do with anything? You're already converting split phase AC into DC, using 3 phase (already done in this place called Europe, BTW) delivers more power at the same amperage.

sticking a heavy 3-phase to DC converter in the car?

Yes. Again, see all of Europe.

[–] [email protected] 1 points 8 months ago (1 children)

What is the actual issue you're trying to solve here in the US? We simply don't have the prevalence of lower power 3 phase systems like Europe does. Are you worried about unequal legs for commercial operations with tons of L2 chargers? Can you be more specific about why adding 3 phase inverters to all the cars in the US would be a benefit when we already have access to single phase everywhere, or 3 phase L3 chargers that can just feed us DC (anywhere from low to high power)? I'm just not seeing it.

[–] [email protected] 1 points 8 months ago

I'm not trying to solve for anything except a unified connector. The upshot of which would be supporting all three phases of a three phase branch which is something that NACS mentions while only using two of the phases from a 480v system. Using all three means onboard chargers and connectors could be the same globally, and when using split phase power in north america, the onboard charger would still work completely fine but at a lower voltage.