Will Electric Vehicles Be Viable? When?

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Andres125sx
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Re: Will Electric Vehicles Be Viable? When?

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Those are big news :shock:

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Andres125sx
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Re: Will Electric Vehicles Be Viable? When?

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This looks quite revolutionary


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Big Tea
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Looks Very interesting. I hope 'vested interests' do not come into play now.
I am very much in favour of filtered water. Preferably passed through a brewery

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henry
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Re: Will Electric Vehicles Be Viable? When?

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Andres125sx wrote:
Wed Sep 25, 2019 9:37 am
This looks quite revolutionary

https://www.youtube.com/watch?v=8gO60bt6rqk
Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
Fortune favours the prepared; she has no favourites and takes no sides.
Truth is confirmed by inspection and delay; falsehood by haste and uncertainty : Tacitus

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Big Tea
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Re: Will Electric Vehicles Be Viable? When?

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henry wrote:
Wed Sep 25, 2019 10:06 am
Andres125sx wrote:
Wed Sep 25, 2019 9:37 am
This looks quite revolutionary

https://www.youtube.com/watch?v=8gO60bt6rqk
Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
As the efficiency boost is at the lower end it would be less problematic to add a little gearing into the system add use the 'sweet spot', if it is as good as they claim. A 2 gear or CVT drive would not make much difference and would take little room. An independent review would be nice, but worthless unless it was a vehicle installation.
I am very much in favour of filtered water. Preferably passed through a brewery

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henry
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Re: Will Electric Vehicles Be Viable? When?

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Big Tea wrote:
Wed Sep 25, 2019 10:15 am
henry wrote:
Wed Sep 25, 2019 10:06 am
Andres125sx wrote:
Wed Sep 25, 2019 9:37 am
This looks quite revolutionary

https://www.youtube.com/watch?v=8gO60bt6rqk
Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
As the efficiency boost is at the lower end it would be less problematic to add a little gearing into the system add use the 'sweet spot', if it is as good as they claim. A 2 gear or CVT drive would not make much difference and would take little room. An independent review would be nice, but worthless unless it was a vehicle installation.
This theory is being tested by Tesla and Porsche as we speak.
Fortune favours the prepared; she has no favourites and takes no sides.
Truth is confirmed by inspection and delay; falsehood by haste and uncertainty : Tacitus

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Big Tea
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Re: Will Electric Vehicles Be Viable? When?

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henry wrote:
Wed Sep 25, 2019 10:30 am
Big Tea wrote:
Wed Sep 25, 2019 10:15 am
henry wrote:
Wed Sep 25, 2019 10:06 am


Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
As the efficiency boost is at the lower end it would be less problematic to add a little gearing into the system add use the 'sweet spot', if it is as good as they claim. A 2 gear or CVT drive would not make much difference and would take little room. An independent review would be nice, but worthless unless it was a vehicle installation.
This theory is being tested by Tesla and Porsche as we speak.
:-$ :mrgreen:
I am very much in favour of filtered water. Preferably passed through a brewery

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rscsr
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Re: Will Electric Vehicles Be Viable? When?

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Big Tea wrote:
Wed Sep 25, 2019 10:15 am
henry wrote:
Wed Sep 25, 2019 10:06 am
Andres125sx wrote:
Wed Sep 25, 2019 9:37 am
This looks quite revolutionary

https://www.youtube.com/watch?v=8gO60bt6rqk
Interesting, but I would be concerned about oversell. At the beginning they show a graph where they claim to be at most 20% more efficient and at the end they show a battery that’s quarter the size. And they claim both motors 95% efficient but the graph ends before that is reached suggesting that the efficiency improvement is all at low speed, which may or may not match to a useful speed range.
As the efficiency boost is at the lower end it would be less problematic to add a little gearing into the system add use the 'sweet spot', if it is as good as they claim. A 2 gear or CVT drive would not make much difference and would take little room. An independent review would be nice, but worthless unless it was a vehicle installation.
I don't quite get it. This looks like a permanent-magnet synchronous motor (PMSM) or BLDC motor where they are changing the position of some magnets for the purpose of using it at different speeds.
But can't you do that already anyway with BLDC motors and a proper inverter?

foxmulder_ms
foxmulder_ms
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Re: Will Electric Vehicles Be Viable? When?

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loner wrote:
Thu Sep 19, 2019 10:56 am
DAIMLER STOPS COMBUSTION ENGINE DEVELOPMENT .. Full focus on electric drive.
https://www.auto-motor-und-sport.de/tec ... lung-2019/
a decision that delayed just about 70 years sorta, no big deal obsolete is cool.
i lost interest in this thread i won't participate in it again.
Bravo. Tesla kick woke them up. Great news.

Greg Locock
Greg Locock
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Re: Will Electric Vehicles Be Viable? When?

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Daimler also announced a long time back that the inline 6 was dead. Until it wasn't.

https://www.hagerty.com/articles-videos ... a-comeback

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izzy
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Re: Will Electric Vehicles Be Viable? When?

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there's a well-written article about a new electric motor that doesn't use magnets, now they've solved various problems with it:
Switched reluctance motors have existed almost as long as the internal combustion engine, but have suffered from weaknesses in performance which have limited their use in electric vehicles.

Unlike common DC motor types, in a switched reluctance motor power is delivered to windings in the stator rather than the rotor. This simplifies mechanical design because power does not have to be delivered to a moving part.

AEM’s breakthrough, the subject of a patent, has been to make it possible to drive the SR motor using the same power electronics as a permanent magnet motor

The rotor is made of a “soft” magnetic material such as laminated steel, with projecting magnetic poles. The stator also has a number of poles. When power is applied to the stator windings, the rotor moves to align the rotor pole with the nearest stator pole. To keep the rotor moving, an electronic control system switches on the windings of successive stator poles ahead of the rotor, so it continues to rotate.
https://www.theengineer.co.uk/c2i-2019- ... ric-motor/

Brake Horse Power
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Re: Will Electric Vehicles Be Viable? When?

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Nice one!

Here is another promising company called Volabo. They are developing high power output electric motors at 48volts. This is obvious a lot safer than current high voltage systems and it allows them to work with cheaper components. Also their motor doesn't need rare earth metals and as icing on the cake they have developed a continuously phase shifting technology. So they have the benefits of several types of phase motors combined in one giving a greater efficiency.



https://volabo.com/

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Andres125sx
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Re: Will Electric Vehicles Be Viable? When?

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Nice two post, but an airliner in a video promoting electric motors... #-o :lol:

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izzy
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Re: Will Electric Vehicles Be Viable? When?

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Brake Horse Power wrote:
Sat Nov 09, 2019 7:54 pm
Nice one!

Here is another promising company called Volabo. They are developing high power output electric motors at 48volts. This is obvious a lot safer than current high voltage systems and it allows them to work with cheaper components. Also their motor doesn't need rare earth metals and as icing on the cake they have developed a continuously phase shifting technology. So they have the benefits of several types of phase motors combined in one giving a greater efficiency.

https://youtu.be/1UBJqDGGRRU

https://volabo.com/
Cool! but 48v must mean a zillion amps and huge fat cables? isn't cabling why F1 runs at 1,000v?

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Big Tea
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Re: Will Electric Vehicles Be Viable? When?

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izzy wrote:
Sat Nov 09, 2019 9:38 pm
Brake Horse Power wrote:
Sat Nov 09, 2019 7:54 pm
Nice one!

Here is another promising company called Volabo. They are developing high power output electric motors at 48volts. This is obvious a lot safer than current high voltage systems and it allows them to work with cheaper components. Also their motor doesn't need rare earth metals and as icing on the cake they have developed a continuously phase shifting technology. So they have the benefits of several types of phase motors combined in one giving a greater efficiency.

https://youtu.be/1UBJqDGGRRU

https://volabo.com/
Cool! but 48v must mean a zillion amps and huge fat cables? isn't cabling why F1 runs at 1,000v?
I was thinking similar, wire lengths are going to be noticeable resistance. I like it though.

Something I notice lately is people are rethinking about how things will work. So far it has been re using existing tec, sort of like having a horse on a tread-wheel in the car with you in an early car.
I am very much in favour of filtered water. Preferably passed through a brewery