Tesla uses 3 phase AC motors so that's the reason for 3 phases. Frankly, the article is somewhat misleading because it does not mention that many converter topologies are "ready" for bi-directional conversion. There are many more things required beyond than what's shown to make practically usable inverter/charger.
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MASTER THREAD: Powering house or other things with Model 3
- Thread starter Vines
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Tesla uses 3 phase AC motors so that's the reason for 3 phases. Frankly, the article is somewhat misleading because it does not mention that many converter topologies are "ready" for bi-directional conversion. There are many more things required beyond than what's shown to make practically usable inverter/charger.
What do you mean by "brick"? If you mean permanently disable the car then that's unfounded fear.
n2mb_racing
Active Member
Yes, but I'm assuming they are showing the schematic of the charger, not the motor controller. I don't really understand why they would have a three-phase controller there.
But, I am not as familiar with the Model 3. On the Model S, the charger is separate from the motor controller / inverter.
Sorry I think I looked at it backwards. The 3 phases are so the charger can work with either 2 or 3 phase AC power.
n2mb_racing
Active Member
Yeah, didn't realize they do 3phase charging outside the US. I guess the supercharger connector is different, since we only have two pins.
Interesting.
n2mb_racing
Active Member
Yes, you can definitely blow fuses if you don't know your way around a battery inverter. As alternative, a car audio installer can set it up to safe usage.
yes at 5 amps or 10 amps. I keep it at 5 to keep it safe. Keep sentry mode on and you can charge your battery without lifting the frunk
n2mb_racing
Active Member
Gotcha. Although, Sentry mode burns a lot of power. But, yeah, I think that would work pretty well for emergency purposes. 12V at 10A should keep a fridge running...
n2mb_racing
Active Member
Yes, I meant using the 12V outlet to power a charger for another 12V battery, which then provides the surge power to start the compressor. The 12V on the car just needs to provide average power, which for my fridge is about 100W
AC/DC inverters are not the most reliable appliance, I would prefer to take the direct load else somewhere else other than the car. With that said, my system cost me $2500. I should just install a PW at 11K and got it a day.
I can charge both units with the 12v connector in the car
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There is value in being portable. Perhaps you can get some foldable solar panels to charge your power station.
I do, I have everything. That’s why I said it cost me more than the powerwall. What I get for being a nerd
Knightshade
Well-Known Member
Thanks for sharing. So, the schematic published by Electrek is clearly wrong. Now, it makes me wondering if they do any fact checking before publishing content.
n2mb_racing
Active Member
Yeah, it was close. It looks like transistors on both sides, but upon closer inspection they have just diodes on the output side. I watched the video. I could see why the other teardown engineer got it wrong.
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