Tesla Motors
Tesla Motors
(OP)
Just out of curiosity is there anything special about the motors in a Tesla automobile. I know they are known for their lightning acceleration.
What type of motor?
3 Phase or more?
How many Poles?
Rev range?
Voltage?
Horsepower?
Any other interesting details on the drive system?
My SIL is very interested in these cars, I want to impress his socks off LOL
Thanks
Roy
What type of motor?
3 Phase or more?
How many Poles?
Rev range?
Voltage?
Horsepower?
Any other interesting details on the drive system?
My SIL is very interested in these cars, I want to impress his socks off LOL
Thanks
Roy





RE: Tesla Motors
Your "SIL" would be more impressed with that information, (don't 'cha think?) than any tid-bits you gained from an Internet forum.
There's nothing to be embarrassed about in writing directly to a company.
Try it!
John : )
RE: Tesla Motors
It's a 3-phase, 4-pole AC induction motor driven from an inverter using field-oriented control.
RE: Tesla Motors
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Tesla Motors
RE: Tesla Motors
" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden
RE: Tesla Motors
Keith Cress
kcress - http://www.flaminsystems.com
RE: Tesla Motors
You're right! While Tesla has been very quiet about the change, others ferreted it out:
https://www.edmunds.com/car-news/auto-industry/201...
I'm surprised. (Not at you being right...) While PM AC motors are smaller and lighter, and a little more efficient, they are also significantly more expensive, which is strange to me when it seems that the big thing for the Model 3 was to get the cost down enough to be a mass-market car. Also, it is much more difficult to vary the field strength in a PM motor enough to do away with a mechanical transmission while keeping the necessary torque/speed combinations. I don't know what Tesla has done here.
RE: Tesla Motors
RE: Tesla Motors
Keith Cress
kcress - http://www.flaminsystems.com
RE: Tesla Motors
Besides which it's an interesting topic don't you think?
RE: Tesla Motors
I think the biggest problem with PM motors is that they are highly sensitive to rare-earth prices, which are into large degree defined by Chinese politics (as over 90% of the Neodymium for example comes from China). There was interesting article on Bloomberg (although the focus was on batteries):
https://www.bloomberg.com/graphics/2018-cobalt-bat...
According to this, price of Cobalt has increased 3 times since Tesla 3 was announced (I'm not sure though is Tesla 3 using Neodymium or Cobalt magnets). Also price of Neodymium has increased significantly during las 12 months
By the way, here is an interview of Tesla's chief motor engineer
https://chargedevs.com/features/teslas-chief-motor...
RE: Tesla Motors
Muthu
www.edison.co.in
RE: Tesla Motors
RE: Tesla Motors
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Tesla Motors
Someone spotted a prototype on the road yesterday in a town near by...
https://www.teslarati.com/tesla-semi-spotted-publi...
" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden
RE: Tesla Motors
The Model S P100D situation is even sillier. 762 HP = 568 kW. It would run the 100 kWh battery pack flat in 10 minutes! Granted, this would probably involve going 300 km/h or more if the rest of the vehicle would be up to the task. Range at top speed ... maybe 50 km?
All of the Tesla cars have a restricted top speed. There are plenty of reasons. I'm sure their one-speed gearing has the motor hitting its rated max rpm before it actually runs out of power. Protection from idiots is another factor, and it's at least in part because the motors and drive units and batteries are not capable of maximum power output continuously, and also to ensure that the range does not become laughably short.
It's pretty common to have a certain "continuous" rating, and a bigger "intermittent" rating. It's no different here. Combustion engines are not immune to this, either. Top-fuel drag racing engines make thousands of horsepower but only for a few seconds at a time.
RE: Tesla Motors
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Tesla Motors
Bill, makes sense. Not used to there being 6 wheels...
" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden
RE: Tesla Motors
https://www.facebook.com/notes/ac-windings/tesla-motor/1807189262634321/
RE: Tesla Motors
RE: Tesla Motors
The drivetrain is designed to target the 0-60mph acceleration range. The acceleration drops off rather quickly when taken above what is legal anywhere in the US. If you watch them in the 1/4 mile they can get a hell of a jump off the line and still get run down at the top end.
They put a lot of battery into the car to get the long range.
RE: Tesla Motors
www.KilroyWasHere<dot>com
RE: Tesla Motors
As long as I can remember All of Sears powered equipment, electric and gasoline, employed "interesting" power ratings.
Similar to "HP at the brochure," as I think Car and Driver, or Road and Track once said.
RE: Tesla Motors
RE: Tesla Motors
Here is the spec on the Delphi EV PMAC motor I had in my equinox conversion. Check out the field weakening area 1600 - 10,300rpm! Used resolver feedback for the Rinehart drive. With the liquid cooling, I suspect the HPs Tesla shows are close to continuous; you just can't use them for long due to battery capacity.
www.KilroyWasHere<dot>com
RE: Tesla Motors
Whenever the subject of small engine HP came up he would always say;
"The first liar doesn't stand a chance!"
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Tesla Motors
This is how heavy haul (mine trucks) equipment is built.
Not desirable in a car since it increases un-sprung weight and has a negative impact on handling, but in a truck that isn't an issue. And it keeps the part count down.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
RE: Tesla Motors
Mining trucks don't have to pass the encyclopaedia of DOT and NHTSA regulations, either. Over-the-road trucks do, and there are a fair number of "thou shalt do it this way" requirements in there.
RE: Tesla Motors
www.KilroyWasHere<dot>com