EV to ICE Transition

On Thursday, 29 April 2021 at 12:36:39 UTC-7, John Larkin wrote: ...

Ahh - so 80% of EV buyers like them so much they keep buying them...

Sounds like a pretty good endorsement.

kw

That's bizarre, and terrible writing too. Is it from 50 years ago?

Modern cars don't smell bad or to any of that imaginary stuff. And they refuel in 5 minutes, every couple hundred miles.

Gas costs so much in europe because the price is mostly tax. That guy is cheap and wants free energy. Reminds me of some people here.

US politicians are worried about electrics not paying gas tax, so they want to tax miles driven too. Simultaneously subsidizing electrics!

In the US, are there really separate gas stations only for GM and others only for VW ICE vehicles ??

Why should there be different EV charging stations for different car makers ?

AC charging is pretty simple with the national voltages and AC currents limited available at each site.

The fast DC charging situation is more problematic due to different battery voltages in EVs. While 400 Vdc seems to pretty common voltage these days, but some manufacturers already use 800 Vdc, so the fast charging stations need to be able to adjust to these voltages.

A fast charging station (50-100 kW) will need a close by MV (medium voltage 14-20 kV) feed, so this will increase the cost of a fast charging station and hence the cost of electricity.

Or they keep the one they have.

People bought PT Cruisers too.

At least in cold climate a car with a catalysator smells bad during the first minutes after startup.

On Friday, 30 April 2021 at 10:41:41 UTC-7, John Larkin wrote: ...

Ahh, so they like their EV to the extent they keep it.

That also sounds like a good endorsement.

But only about 1 million in total - EVs sold over 3 million in 2020 with sales increasing every year.

kw

Running many miles of megawatt feeds to rural stations could get expensive.

On Friday, 30 April 2021 at 10:30:25 UTC-7, snipped-for-privacy@downunder.com wrote: ...

Not necessarily.

To get the highest speed of charging the station needs to adapt but existing 800V system EVs (Porsche and Kia) can also charge from 400V.

The latest version of the Combined Charging standard supports from 350-1000V at up to 400A. (500kW maximum power) to allow both 400V and 800V cars to be charged.

Usually, this is true but even then the cost per mile (both in energy and Dollars) when using an EV is significantly less than when using Gasoline.

Tesla has announced that they are building stations where the power is from local solar power. (Probably with local battery storage).

Battery storage is also used for some charging stations using wired power to smooth the demand, minimize demand fees and the capacity of any grid connection required.

kw

On Friday, 30 April 2021 at 10:55:26 UTC-7, John Larkin wrote: ...

Tesla is using solar to avoid this.

kw

I think Tesla will find it's a lot more difficult going from a $35,000 EV to a $25,000 EV that Americans want to buy, than it is going from a $45,000 one to a $35,000 one. He's understandably vague about those plans at the present time.

Not insurmountable but I think it's likely if it comes to pass it will be built overseas. Musk may even have to get in there and whip those Chinese slaves himself to get the job done but he's shown he's definitely not above getting his hands dirty when required.

The opening picture seems to show about a 10x10 m solar panel, so that

100 m2 area and thus about 10 kW peak electric output. Thus it would slowly charge the car in the picture, but not much else :-).

What is the typical rural MV feed voltage in the US, is it 4 kV or 14 kV ?

While the current electric demand would justify a much thinner MV feed lines, but to get a sufficient mechanical strength, a thicker wire sizes need to be used, so at least on 14 kV, a few 100 kW chargers could be supported along the line.

In rural Australia and some parts of Africa, the single phase, single wire with ground return is used, which doesn't support much extra load.

Without power lines, the rural stations will need solar panals and batteries. That will get interesting in winter.

Do the math.

On Friday, 30 April 2021 at 11:52:08 UTC-7, snipped-for-privacy@downunder.com wrote: ...

They are not necessarily the only solar panels but is also the reason such stations are backed up with battery storage to provide higher power charging to the EVs than is available from the solar panels.

I gather currently even the ones with solar are powered jointly from the grid. The combination of solar, battery and grid does serve to reduce the peak power (reduces demand charges) as well as the amount of grid energy required even if it does not provide al the power required, especially at peak times.

Not true, tunnels are always more expensive than above ground rail. The problem is you can't put above ground rail in dense areas that are already built up. That's why they put the extra money into running rail below ground. Musk seems to think he can high tech underground transport to make it better than rail in some manner. Since the places people want to go between in large numbers are high density areas, allowing you to travel between them in your own cars is not so useful. Using robotaxis as public transport can make sense, but we are a long way off yet.

This is a 40kW array, it's fine for low-power charging many cars that are sitting around at the dealer even in New England wintertime.

For fast charging you'll need bulk storage with an array this size. But you don't have high throughput in a rural area so how much bulk storage do you really need? a couple car-battery of bulk storage is probably sufficient for many places.

Tesla is losing money on cars now.

And asian sources will undercut him when/if volumes go up. Asian sources with rare earths.

Australia will sell them the coal to run the factories.

You mean like Quartzsite, AZ? No way they can install a bunch of Superchargers in a place so remote.