How Tesla Reinvented The Electric Motor

[@NeilCrouse99]

ELONE IS NOT AN INVENTOR.... He's an Entrepeneur, That's it... He's just a man born into wealth and has a knack of bringing the right people together and isn't limited by regulations put upon NASA and the automotive companies...

[@haddenindustries2922]

I honestly don't know WHY people keep forgetting or just go over this stuff and keep calling him an inventor! He is indeed NOT an inventor and didn't come from humble beginnings. His parents had mineS not just A mine(which would be insane as it is) but multiple mines! I'm not hating on the dude but I just like to get things right and just hear the truth for once!

[@eddieedmondson7698]

Exactly. But there's a large number of people out there that you'll never convince.

[@agytjax]

Let us give credit where it is due and acknowledge it was Martin Eberhard and Marc Tarpenning, the original founders who launched Tesla's first electric car in Roadster.

[@MostlyIC]

it seems to be a myth that Tesla Motors invented the "internal permanent magnet synchronous reluctance" motor, as that's what's been in the Toyota Prius since long before.

[@favesongslist]

When Tesla displayed the motor for the Model S plaid, I was blown away at its complexity. Tesla has truly talented engineers.

[@dinorossi6611]

You should see Rimac electric motor. It is better and even more complex than so called 'Elon's' motor.

[@kit888]

"The best part is no part." - Elon Musk

[@favesongslist]

@@kit888 Have you looked at the Plaid Motors? Yes they are from first principles eliminating anything not needed, but they are a master piece of complex engineering and manufacture.

[@kainhall]

i was blown away by its lack of build quality.

[@geemy9675]

you mean the ones that havent been fired or haven't resigned yet

[@rogerstar6683]

While he's the face of the electric-car maker today, Elon Musk DID NOT START TESLA. Martin Eberhard and Marc Tarpenning were co-founders of Tesla, aiming to produce what became the Tesla Roadster.

[@eoin1959]

I'm glad you pointed this out. Martin and Marc designed the Roadster and Model S but were looking for investors, and along came cash-strapped Elon. He soon began calling himself 'one of the founders'. One of the founders successfully sued Elon for this, but in an interesting twist, part of the settlement was, from then on, he could call himself 'the founder of Tesla'.

[@SupraSav]

@@eoin1959 Hate that.. Give credit where credit is due. People are all too comfortable being fake in a world where vigilante justice doesn't exist.

[@tahir4163]

@@eoin1959 well there is detailed documentry on this topic. and which says tesla was doomed and tesla was run as hobby rather than serious company. what tesla we know is 99.9% Elon's Tesla.

[@mshthn]

@@tahir4163 And he is anything BUT an investor. A parasite, mostly.

[@jonasgschnell4051]

The internal magnets don't reduce back emf, besides centrifugal forces, the reason for putting them inside the rotor is the reduced Airgap.

[@aaronlowe3156]

Yeah this video is definitely factually botched...

[@hoodedcreeper2465]

The reduced back emf is due to the reduced size of the magnets. Id assume that the ferrite magnets would reduce the back emf even further because of the reduced magnetic field in the rotor at the cost of torque. The motor would likely continue making power at a higher rpm than with stronger magnets.

[@hoodedcreeper2465]

Id also think it would be cool to somehow combine induction and reluctance into one motor. By controlling the frequency you use induction at low speed and reluctance at high speed. And some combination of both in the middle

[@saimaithreya1404]

@@hoodedcreeper2465 how do you combine both in to one motor

[@hoodedcreeper2465]

@saimaithreya1404 you put a squirrel cage around the rotor

[@pyrosapien4028]

Those wires and field lines going in the same direction at 3:08 make me uncomfortable, it’s supposed to be perpendicular

[@charlesc266]

Well done to Toyota for the development and introduction of the IPM-synRM motor back during 1997.

[@COSMACELF1802]

Toyota makes the most reliable cars.

[@jaxsonreynolds5261]

@@COSMACELF1802 absolutely agree.

[@roderickpaterson1943]

1887 is most definely not "the early stages of The Industrial Revolution". Most scholars suggest that the Industrial Revolution was between 1750 and 1850. Mechanisation, steam engines and telegraphy played a part in the American Civil War which was 1861-1865. The "early stages" of the Industrial Revolution is categoriesed by water wheels, cotton mills and standardisations

[@aerohk]

1887+ is the beginning of the electrification era

[@paulpantsoff6584]

@@aerohk 1945 was tthe beginning of the "Marketing W*nk Era"

[@ty2u]

Very good video. Great information well explained.

[@nufosmatic]

The reason that Westinghouse succeeded with AC and Tesla over Edison and DC was that he had Steinmetz to make mathematical sense out of it. Charles Proteus Steinmetz (is that a kuel name, or what?) was able to understand the AC systems that Tesla intuitively built and create tools for the analysis of synchronous AC systems. AC analysis, also known as Steinmetz Analysis by people who don't care to repeat history, allows you to predict the losses through a network of connections and design transformers to lessen these losses in a large system.

[@susilgunaratne4267]

Of course, theoretical aspects were by Steinmetz.

[@TheDavidlloydjones]

Tesla built no "system." He was a small time cheerleader for Westinghouse, one of the few things he ever got right, and he built one end of a non-existent transmission line from or to New Jersey and nowhere. Musk's people have rewritten many pages of Wikipedia, a shameful act of historical piracy, and he is flooding the zone with bullshit. The fact remains, Tesla was a con man who earned his death in fraudulence and poverty. AC was developed a generation before Tesla, and he had almost nothing to do with it.

[@steveharkins279]

Been wondering lately why Tesla regeneration is only 10% of generation, where are we losing 90% of energy?

[@Tom_239]

8:26 no, not strips of pure neodymium but rather magnets made from an Nd-Fe-B alloy (that has more iron in it than neodymium).

[@valentinsacco]

In asynchronous motors, the stator magnetic field and the rotor magnetic field rotate at the same speed, it is a mistake to say that the rotor magnetic field rotates at the speed of the rotor. The difference in speed between that of the magnetic field produced by the rotor and the rotor itself is called displacement speed.

[@nilsblumfelds]

Why aye man

[@PREMKUMARNnewlife]

Super bro

[@jjggbbjunk]

I noticed that too. The animation at 5:30 should show the magnetic fields rotating synchronously (with the rotor rotating slower than the fields), but it doesn't.

[@NeilRieck]

I'm a big fan of Nicola Tesla (great inventor - bad business man) but no one would know his name if it were not for the efforts of George Westinghouse. Recall that it was Edison who wanted the USA grid to be DC whilst Westinghouse promoted AC. So the formal name of Tesla's main invention, which we still use today, is "poly-phase A.C. generation and distribution". (can't have step-up step-down transformers with DC)

[@richardwyse7817]

lets not forget Faraday....

[@WalterWeinzinger]

The graphic at 2:45 is quite misleading. It looks like the magnetic field, generated by a current flow in a wire, runs lengthwise down the wire and then externally back to the other end of the wire. The magnetic field generated by current in a conductor actually rotates perpendicularly AROUND the wire according to the Right Hand Rule.

[@BillMitchell-lm8dg]

The depiction of magnetic lines of force that are generated by electrical current (and vice versa) are consistently wrong in all the renderings/animations in this video. Thus, none of the conclusions are correctly led to by them. IOW, this is just marketing talk, not an engineering explanation. Fluff!

[@kainhall]

ya.... thats Musk and his simps in a nutshell..... . i like how he said "the car is SO ADVANCED.... it hasnt even been released yet" turning YEARS of delays into a "positive" LOL . or at least he TRIED to sneak that one in under the radar...... and im SURE the Elongated Muskrat simps ate it up but anyone with a brain, critical thinking skills, and who isnt in love with a corporation..... knows thats a bullshit line

[@lacuentadevideos]

yeaP.. BLA BLA nice drawings but sooo WRONG, MONOPHASIC motor fiel are two fields rotating both senses thats why if you start them either direction will start, but no without the push, biphasic and threephaisic solved the problem with grater eficiency, not subsiribing so no more comments.

[@YewtBoot]

That and the fact that there is no such thing as centrifugal force - I stopped watching. Sigh.

[@BillMitchell-lm8dg]

@@YewtBoot Any physicist will bell you the same thing - there IS no such thing as Centrifugal Force. The pull you feel on a rope attached to a bucket that you're swinging in a circle is CENTRIPETAL Force - the force the YOU are applying to the bucket to accelerate it continually inward toward the center of the circle.

[@YewtBoot]

@@BillMitchell-lm8dg Exactly what I said.

[@stevesepka2542]

Also, I've been told Elon Musk was not a founder of Tesla. He bought the company from his PayPal earnings and re-wrote their history.

[@favesongslist]

Musk was not a founder. But what he has now built is way beyond the founders original dreams.

[@freeenergytransformer5842]

Tesla's reinvention of the electric motor has been nothing short of revolutionary, building on the foundational work of Nikola Tesla and pushing the boundaries of what's possible in automotive technology. By leveraging Li-Ion batteries, which support higher current and enable the remarkable acceleration Tesla vehicles are known for, they’ve set a new standard in the industry. It's fascinating to see how Tesla opted to accelerate their innovation cycle by letting real customers essentially beta test their vehicles, a bold move that contrasts with traditional automakers who typically conduct extensive, multi-year testing before releasing a product. While this approach has its challenges, especially for engineers and designers working under intense pressure, it’s also what has allowed Tesla to lead the charge in electric vehicle innovation.

[@brunonikodemski2420]

Induction motors can also have about the same efficiency (and possibly more) if they use Slip Controlled AC Drives. Our company worked on these in the early 70's, about the same time we were designing the drive electronics for the Lunar Rovers. This was based on Fast-Reversal drives for ships and submersibles, where propellers had to be immediately reversed to slow down a submersible. This does require that the batteries and electronics remain operational, but allows regeneration of the inertial energy of the ship. With the permanent magnet motors, you can go into a "stall mode" where the motors can be shorted (or dynamically braked), without needing external power. That mode also requires some added parts, but it can be used as a last resort "skid to stop" mode, which is clearly useable. Especially if you are going over a cliff. Slip Controlled moters can be more efficient in driving mode, depending on the Iron Losses of both the rotor and stator. The magnets produce exaggerated iron losses when not needed. It depends on the driving cycle, as to which is better. Also, plain induction is way way cheaper to manufacture. I predict that Tesla will go back to those, for their chinese models, where BYD produces a competitor for about 12,000$usd.

[@MikkoRantalainen]

2:20 I think it would have been good to mention that you could transmit lots of power using DC transmission network, too. The problem with DC network is that when you need to step down the voltage, you cannot do it with a static pair of coils and some non-movable iron (which is all you need for AC transformer - zero moving parts, zero logic, zero computers) but you need active components which increase the cost a lot. Multiply that with all the transformers you can see around and you can quickly figure out why AC is used.

[@sonicdewd]

That... and the original reason being that DC transmits terribly over long distances. A lot of power is lost on long runs. This is why Edison insisted on a bunch of little power stations rather than one big one for a given area.

[@MikkoRantalainen]

@@sonicdewd Edison's DC system was terrible over long distances because they couldn't use high voltage because lack of DC-DC transformers at that time. Long distance high voltage DC is used to transmit big amounts of energy in modern world but it requires *really* expensive DC-DC-transformers at the both ends of the power transmission line.

[@myarupyon]

@@MikkoRantalainenyup, and to add on, the reason why high voltage transmission is more efficient is because you deliver the same amount of power, you need to deliver less current with higher voltages (P=I*V), and since losses due to internal resistance are a function of current (not voltage), being able to deliver electrical power with less current is more efficient, which is the case with high voltage

[@randycarter2001]

The mistake people are making is assuming Tesla is a car company. Tesla is a technology company that just happens to make cars. Tesla is into a lot more stuff than making cars, for example, mega-packs for grid storage.

[@Dmitry-ert]

Don't forget financial bubbles like Cathie Wood's arkk etf 😂

[@eoin1959]

...and rocket ships that are putting NASA and Boeing to shame.

[@RY-TIOUSRY]

Tesla was able to conceptualize AC power in his mind. He was known for his extraordinary ability to visualize complex systems and processes. His invention of the induction AC motor is a testament to his unique mental capabilities. The idea of a rotating magnetic field, which is the core principle behind the induction motor, is believed to have come to him in a sudden flash of insight. This suggests a powerful ability to visualize and manipulate abstract concepts. While we can't definitively prove how Tesla conceived of AC power, his contemporaries described him as a visionary with an unparalleled ability to imagine and develop complex inventions. The evidence points strongly to the conclusion that his mental imagery played a crucial role in his groundbreaking work.

[@rudiralla9630]

Alternating current was known long before Tesla was born. There is no theorem, theory or principle from Tesla. Tesla's “inventions” were stolen from others, even his Tesla transformer. Telsa was a phoney and a windbag who simply had nothing on the ball and you are still falling for the buffoon today.

[@HolographicThoughts]

Yikes, the comments section knows more about EM than the video script. While the oblivious are like "thanks for misinforming me so clearly". 😂

[@CharlieMengass]

Wow

[@myarupyon]

glad i'm not the only one lolol entire time i was watching this video i was like, huh this doesn't make any sense, and im an engineering major, which isn't to say i know everything, but it doesn't align with basic principles of electromagnetism from my understanding lolol

[@iliedragosh]

Elon Musk invests a lot in research and development. I give him a 👍

[@BrinJay-s4v]

I agree he certainly understands enough to make good choices unlike many in the green generation brigade

[@stevenrast4261]

Bro’s voice is back 😎

[@JordanTheXMormon]

Eh tbh he’s already musked it, view count dropped by 30 points

[@ericblanchard5873]

Yay!

[@icls9129]

He says that a magnetic field is induced in the wire -- err no! You can't have a magnetic field in a conductor. The magnetic field is surrounding the wire.

[@evaluateanalysis7974]

At about 3:00 he created a magnetic pole - on its own. Amazing new invention - not :).

[@shreddedtwopack6625]

@icls9129 what are you on about? I didn’t like the video either, but your comment is just as bad. You might be thinking of an electric field, which cannot exist inside a conductor, but magnetic fields can definitely exist inside conductors. To be clear, electric fields actually can exist inside conductors but it’s taught this way to simplify, so that’s probably where you’re getting this comment from.

[@evaluateanalysis7974]

Don't bother responding to shreddedtwopack6625. His brother has got his family's braincell today.

[@bl3epbl0op]

Erm, what the sigma? ☝️🤓

[@mikewallace8087]

icls Want to have a Cow.

[@Smartiezs]

i'm so glad i invested in those robotaxis you spoke of, totally got my money back in a year

[@bobdeverell]

Hungarian Otto Blathy arguably invented the key components for AC use. From the transformer (co-inventor), single phase ac motor, watt meters etc etc. Tesla introduced AC to the USA.

[@tonychopkoski2789]

Gotcha!

[@ChildSpaceMethod]

Great presentation. Years ago I translated sales materials about Mitsubishi Electric's traction motors for electric trains, elevators, etc. Now I understand them much better! Interestingly, the Japanese engineers calculated that for a new subway line in Osaka, it would be cheaper to "unroll" the electric motor, with a flat pad of coils on the train (the rotor) and, on the tracks, a thick flat horizontal steel plate called a "reaction plate" replacing the stator. Despite all the extra steel needed for the reaction plate, the lower riding cars from this design saved on tunneling costs.

[@TheTeslaSpace]

That’s really interesting. High tech electric trains are a subject I’d love to learn more about, they’re very cool

[@evaluateanalysis7974]

"Interestingly..." That's a linear induction motor. Aluminium would be better for the stationary plate.

[@goldengoat1737]

Bro this is not how electric motors work literally got everything wrong

[@saalbar1]

It’s just not Tesla Space without the voice 🙂… welcome back

[@Ainzgirl]

Agree wholeheartedly

[@ultimateenergizerguide467]

Many car enthusiasts, myself included, often find joy in the imperfections of classic vehicles. The rough gear shifts, the sound of the engine revving, and the direct connection to the road offer a unique driving experience that can't be replicated by the smooth, almost sterile feel of an electric motor. Even after driving a Tesla Model 3, with its instant torque and speed, the pull to get back behind the wheel of a car like the 280zx is undeniable. There’s something about that "notchy," mechanical feeling that brings a sense of satisfaction, even if the performance numbers don’t compare to modern EVs. It’s more about the journey and the emotional connection to the machine, rather than just the speed.

[@pixeldesigns5333]

better things to experience than a volcano under your seat

[@philipwatersdeaf]

Yeah, and I really miss the feel of the horse underneath me, the sweat forming off its back, the smell of leather saddles. Now that's 'real' driving with real satisfaction and a real machine.

[@quantumleap359]

Another way to eliminate using rare earth magnetic materials is to use an externally powered wound rotor. The rotor is similar to the rotor in an automotive alternator, where the rotor coils are energized through a direct current sent to them via slip rings and brushes. Although the slip rings and brushes comprise a wear element, the efficiency of a wound rotor and its available torque overrides the effect of having a wearing part. We will see if this tech will prevail and become standardized.

[@petnahc]

Did you say that Elon Musk is a modern inventor! Can you give me a list of what he invented?

[@paulb1951]

Are you so lazy you can’t google the answer for yourself?

[@BuildLancer]

@@paulb1951 musk hasnt invented anything, he is just the one who pays the inventors then takes credit for their work.

[@Mars2152]

​@BuildLancer So what have you done? I've never heard of you but can not imagine finding anyone who doesn't know of at least one of Elon Musks' accomplishments.

[@Mars2152]

​@@BuildLancer At best you can throw rocks at a giant because you are not one

[@datachu]

@@Mars2152 It's not like he tries to take credit for their work, he's the CEO of the company the inventors work for, this is literally how ALL companies work (and take it from an engineer, when you work in the industry you have to sign a lot and I mean A LOT of paperwork confirming you understand how attribution and IP rights work at your workplace and clarifying anything you intend to use that isn't fully the IP of the company). Or do you individually know the inventors and designers of every single piece of YOUR car? Lol definitely not, nor is that info easy to find, but you know who the CEO of the automaker is. Also don't bring up that bogus story about how the roadster design was bought of two random dudes and then they were screwed over and never paid for it, that has been debunked thoroughly.

[@WillJackDo]

"Modern inventors like Elon Musk" LLOOOOOOOOOLLLLL

[@Foersom_]

How else could he have earned his title "Technoking at Tesla"? LOL!

[@Mars2152]

The man has made billions with his accomplishments' and all small people can do is throw pebbles at this giant

[@WillJackDo]

@@Mars2152 Yes, defend the multi billionaire. He definitely needs you...

[@Mars2152]

@WillJackDo He definitely doesn't care about your criticism either. Sarcasm runs deep with this one. What is your real problem?

[@maximusasauluk7359]

@@Mars2152 Bruh, he didn't invent shit, he's busy arguing with kids on Twitter. He hired smart people to do it for him because he has money. All Elon Musk did was have a good vision and happen to get ahead of everyone else for it. Congrats to Elon for spearheading the EV transition with his business and for making nice speeches based on what his engineers tell him they invented, but other than that he literally doesn't do anything else. If you really think he invented everything he claims to have, you're as intelligent as Elon Musk lol

[@joycebarker1488]

Great video!. Tesla was a genius, that will never be forgotten!. He will also, never be forgotten, for all time!

[@joycebarker1488]

Great video! Interesting ways to solve the problems and caveats of centrifugal force!

[@steveoshaughnessy3736]

I enjoyed this video very much. My only criticism is people generally confuse voltage, current, and power. Yes, current flows both ways into and out of the power station. That is the C in AC, Alternating CURRENT. But the POWER or energy flows out of the power station to the consumers. With AC it is easy to step the generated voltage way up. I believe to Millions of volts. The current goes down (with a fixed load/resistance), and little energy is lost in the transmission from generator to consumer. The voltage is dropped back down at the consumer. That top wire between the poles running through your neighborhood have around 5,000 volts. Those gray or black cans on the polls are transfomers that drop that 5k Volts down to 220V for each house. Absolutely, Tesla's genious was in understanding how voltage and current can be altered by simple, passive transformers.

[@eddiegardner8232]

Much of the pleasure of driving a Tesla comes from the high torque and instant acceleration of its rare earth motors. These materials can of course be recycled as the number of EVs reaches its peak, just as can its aluminum body and internal aluminum castings, and the materials in its batteries, so "used" does not mean "consumed" like petroleum products burned as fuel. If Tesla, or any other manufacturer, wants to make EVs that are as slow and unresponsive and inefficient as today's 4-cyl ICE clunkers, then, no sale, for me.

[@TheTeslaSpace]

I imagine the usefulness of the motors will outlast the usefulness of the cars in many cases. Will be interesting to see how they go about recycling/repurposing this kind of thing.

[@billweberx]

They may not be for you, but they would work well for robotaxis, which don't need high performance.

[@GrantBruner-d5i]

We can clearly see who back. Side . Your limp wrist has been up p

[@eddiegardner8232]

Suppose you have for reason of slow sales, a reduced profit and reduced cash flow. IF you start making "robotaxis", whatever that turns out to be, you not only have the startup costs of producing a new kind of car, you also are wrapping $20-30,000 around each one you send out the door, because they are not being SOLD, they belong to the company. That is a very negative cash flow, that "might" eventually produce an income stream at some point in the future, if people want to ride around in taxis a lot more than they do already, in taxis, Ubers, and Lyfts.

[@kainhall]

rare earth magnets are not rare.... and are not special my 10 dollar remote control car from the late 90s had "rare earth" magnets.... . also... ICE cars are made of the exact same materials.... yet they dont get recycled as its very hard to separate the plastics, metals, ETC from each other this means... Telsa isnt going to recycle either . they are already loosing money and had to lay off like 40% of the staff.... so, again, their is NO DAMN WAY they will take that big of a hit just to recycle cars... . . also... electric motors DO have good off the line torque this is due to "field slip" . but at high speeds.... it looses HP/torque from 0-60 its fast AF from 60 to 120 is quite slow (my 160HP 99 buick century can keep up from 90 to 120) . and because of that lack of field slip.... the motor becomes less efficient to the point that a gas engine at speeds over ~90mph is actually producing LESS carbon emissions . yes... tesla has carbon emissions (its just at the power plant... instead of the exhaust pipe) but out of sight, out of mind..... keep saying your car has "zero emissions".... its GREAT marketing!!

[@nilsblumfelds]

The physical rotor will slip, but the fields will not. They will be at the same frequency, what will differ betwean them is their relative phase

[@postiemania]

As someone who has worked on electric motors for over fifty years I must say I am sceptical of this motor. Tesla's original 3 phase induction motor is the simplest and best motor for.dollar value. Closed loop AC servo motors are very expensive but have total control over rpm and shaft position. Two very different types, so do your research.

[@jimf2525]

You have the wrong orientation for the magnetic field. It’s circles a wire, it doesn’t go out the ends of the wire.

[@S0me0ne_S0meWhere_SaysHi]

I think moving to an axial flux motor will introduce a more efficient use of materials during manufacturing plus next to no loss in power for a smaller package.

[@samuraiintellectual]

I think you might need to check your facts. Elon Musk did not put the electric motor in Tesla. He joined a company named Tesla. They already had a vehicle and it was electric. Other than that great job!

[@kainhall]

he also tried to turn YEARS of delays into a positive... "the car is SO ADVANCED it hasnt even been released yet!!"

[@Jacob9jh77ujjk]

That vehicle was a prototype and wasn’t working

[@donaldhaldenbaughman5967]

And he kept it going with 400 million dollars

[@evisoneym2323]

We had missed your voice man

[@jrxtrc]

Actually, Tesla and the original founders of Tesla did not come up with using an AC motor. They bought the motor technology from AC Propulsion’s TZero to make the Tesla Roadster.

[@TriPham-j3b]

Real alternator is half generator and half motor so only small batery is need to serve as emergency back up but in future ev will be backup generator for house or building

[@TheEducat0r]

Watching Tesla reinvent the electric motor is like watching history in the making.

[@NIOC630]

those motors were not invented by tesla. Relcuctance and pmsm exist for a very long time.

[@TheEducat0r]

@@NIOC630 thank you for sharing

[@DavidCraig-go1zv]

Maybe in another 100 years you can try what's already available and more efficient. You can make a hybrid of a motor and generator to function as a single unit. One unit can be used to start others. Since the coils of wire will short out when the hybrid is hit by lightning, you throw them away and replace them with a solid copper (motor) ring. Next, you need coils that will generate electricity, but in order to make room for them, you have to eliminate the shaft and replace it with a solid copper (generating) ring. Next, a free-floating 'S' shaped arm in the center is put inside the hollow copper disk. When lightning hits the 1st completed disk the electromagnetism will protect all parts from the heat. The free-floating, copper 'S' will repel off the bottom, top and sides. As it spins, it will generate electricity in the top and bottom disks then move to the outer 'motor' ring. Thermodynamics will not affect the electro-magnetic field and the only moving part rides on electromaglev bearings.

[@georgerocks5191]

Direction Does not change 60 times per second but 120 times The full cycle is 60 of the 2 swings

[@FrankGallagherr]

Tesla is the best car company ever! No gas stations, No oil changes, No smog check, No corrupt dealership, No catalytic converter and as fast as a $650,000 Lamborghini oh yeah and FSD

[@njjeff201]

Maybe but Elon is a shitty antisemite & a shitty human being.... much like Henry Ford who was a Hitler lover.

[@COSMACELF1802]

Don't forget, no range!

[@wholeNwon]

Do these motors require liquid coolants and, if so, do internal leaks from failing seals compromise the longevity of the units? Are there external drains to prevent damage?

[@yakut9876]

Very excellent explanation. But I think that a large part of the complexity and therefore the cost is due to the complex electronics and programming. In my opinion, they should reduce the electronics and programming and find alternative ways instead as this will inevitably lead to a simpler, more durable and reliable system.

[@mareksykora779]

Actually not Tesla, but Toyota invented the permanent magnet motor used in Tesla 3. Toyota used it in Prius many years earlier.

[@barnowl6807]

Ferrite is a good possibility despite it's disadvantage of being brittle and of relatively low flux density. First, Tesla has developed the motor with a very tightly constrained rotor. That would take care of brittle. Flux density is pretty well fixed by the material, but the volume of material would make up for much of this problem. And all of it workable because of the constrained rotor. And -- it would cost a lot less than super magnets.

[@albrigo]

Tesla reinvented the electric motor, while SpaceX reinvented the rocket engine: sometimes there are some game changer people emerging in the society who are crazy enough like Elon Musk!

[@makeit2132]

You forgot the key role of George Westinghouse...making Tesla invention useful and defeating Edison's DC

[@TheDavidlloydjones]

It was not Tesla's invention: Tesla, occupying a bar stool in a Fifth Avenue hotel, did press support for Westinghouse -- who also didn't invent AC. Westinghouse was a genuine, and technically correct, developer. Tesla was a pushy promoter. AC was invented by Faraday, among others, fifty years earlier than the Westinghouse-Edison wars -- in which Tesla was a trivial figure.

[@makeit2132]

@@TheDavidlloydjones Yes, Faraday is by far the true genius here. With the discovery of induction he gave birth to AC. However, the invention of the multiphase AC generator/motor is attributed to Tesla because he patent it (he likely stole the idea from another Italian). On the other hand, when it comes to AC vs DC, the battle was between Westinghouse (personal hero of that period) and Edison. He put the money and took the risk to buy Tesla's patent and increased the efficiency of its initial design (with massive help form his employees). This and his skill as a business man allowed him to win the Chicago fair and light up the world. My point was that out of this list of names... Tesla was the least relevant technologist and people only remember him because of his showmanship and mainly because JP Morgan used him in an attempt to erase Westinghouse out of history since they lost massively by backing Edison and DC.

[@brylozketrzyn]

​@@makeit2132JP Morgan was one that tried to obtain AEG polyphase patents but Westinghouse struck back and prevented it. It is the AEG three phase system that we are using today anyways.

[@makeit2132]

@@brylozketrzyn Thanks, I didn't know that. Do you have a source to investigate further? I would like to know if JP was already backing Edison and intended to block polyphase AEG from becoming a thing.

[@brylozketrzyn]

@@makeit2132 "Networks of Power" by Hughes. It was JP Morgan that put Edison out from Edison General Electric. However even a mighty bank would not stand a lawsuit from multiindustrialist Westinghouse at that time. Polyphase AC was however very profitable, so after an initial approach to AEG JP Morgan agreed to "forget" about AEG and recognize Westinghouse as patent owners.

[@garrettmasarik8012]

Uhm... NO... the alternating of AC current is NOT directional. AC refers to the oscillation between a positive and negative extreme of a single direction sine wave of potential energy. IF AC referred to a DIRECTIONAL reversal you would get NOTHING as the directional flip would cancel out the previous state and NOTHING WOULD "FLOW"... and let us not forget that we have a HOT (black) wire and a NEUTRAL (white) wire, with an optional shunt to ground, in basic AC circuits rather than TWO HOT wires in single phase. Given the basics of AC current are grossly misunderstood here, I am bailing at this point as anything built on incorrect foundational information is, by default, going to be incorrect...

[@njjeff201]

I was going to mention the fact AC flow is one direction & not flip flopping. The voltage is sinusoidal as seen on a oscilloscope. Positive to negative, positive to negative not flat line as DC.

[@terenceiutzi4003]

When will they get the much more efficient multiphasic motor that GM has been using?

[@narrativeless404]

Explains AC: Video: shows DC electro train power lines Um yes, makes sense

[@jnawk83]

How can you tell the trains aren't AC?

[@bingosunnoon9341]

Series wound or BLDC

[@Ayo22210]

There needs to be multiple levels of regenerative braking like downshifting to help stop or going downhill

[@TheTeslaSpace]

That could be nice. Sounds complicated though

[@rsteeb]

There is. The regen depends on how far you lift the "go" pedal.

[@ferrellms]

The motors are not truly "revolutionary" (an ac induction motor basically) but do show excellent engineering.

[@Mars2152]

What you do not know now. With the cutting edge of A.I. technology they are redesigning for nanotechnology builds that literally build by the atom stacking. This will change everything. Now you have a glimpse of Teslas' Skunk works

[@lawrencefrost9063]

Reminds me of ; Dennis & Mac: Charlie what are some of your hobbies? Charlie: Magnets! Dennis & Mac: Magnets? Okay, what like making magnets? Collecting magnets? Charlie: Just Magnets!

[@claudioluthi4232]

OMG... You got the basics wrong... Dude, the magnetic field is perpendicular, not in the same direction as the current... (around minute 3:00) 😆

[@cokesandwich1668]

No, not perpendicular. The magnetic flux loops around a conductor in a circle.

[@PREMKUMARNnewlife]

I have a doubt we add internal permanent magnet inside a rotor is increased is weight,and that external magnetic field produce by that magnet could cause the noises in electromagnetic flux make to over heat , mechanism vibration to reduce torque and performance of motor . this is my doubt?

[@qDario]

I’m pretty sure and I hope Tesla’s next gen vehicle won’t have an 8-9s 0-60. Pretty sure they will have some genius that will make the new motor even better off the line than the ones we have today. As Elon said, “at Tesla we don’t make slow cars”.

[@JhonIdrovo-the-human]

There are many falls in this video, the most important one: Elon Musk DID NOT start Tesla. It already existed and had the same mission

[@aienthusiast618]

probably one of my favvorite vids on this channel

[@markawbolton]

So in a DC motor does the current flow in the same direction through the magnet coils ?

[@njjeff201]

I believe you are correct, and of course can be reversed.

[@joshuakarn9944]

Yes, that's why DC motors have a commutator to reverse the magnetic poles as the motor spins.

[@nathanwolff2505]

The technical details/visuals are very misleading. “Faster current, faster rotation”? Not quite. Voltage is what you can consider “faster” current is the “strength of”. If you think of electricity like a river, voltage is the speed of the water and current is the width. V=IR

[@amsterdamn4829]

Best explanation ever... lovely video.

[@cratersofthemoon]

That was the best presentation of Tesla motors I have heard. I think you could have touched on frequency control but it was a clear and concise presentation! If you can’t understand what’s going on you probably should be riding a bike. Slowly!😅

[@lucientjinasjoe1578]

In the 21 century high voltage dc will be the normal and back and forth 12 volt won't carried electricity over a great distance, check it out

[@gsmollin2]

I remember being surprised that Tesla used an induction motor in model X. Then it occurred to me that they couldn't afford rare-earth magnets in a consumer product, and I understood the choice of name for the car.

[@Boswell0352USMC]

So what happens when you combine a Tesla motor with a Tesla turbine?

[@jarongaus]

Great explanation, very well done !!!

[@silverco68]

jesus wept, Poly Phase induction, hypolite needs to be recognised.

[@eduardoflores2510]

Hey Elon you want your Cyber Truck to tow like a ICE Cummmings over a great distance. Try moving rotor to the out side of the stator. Think rotating Mass or rather kinetic energy. Doesn't have high RPM , but is a truck or a drag car

[@stefanf.3240]

Looking at a classic engine, after appropriate reconstruction, the "rotor" can be stationary and the "stator" can rotate. Then place the motors in the wheels.

[@terrym1293]

Pretty cool idea! A large scale version would definitely be interesting .

[@ScottySkilz1]

couldn't you throw more alternators and use the access energy to power the car for longer distances?

[@OmarManasra]

Electrical motors by ABB are superior to any, in their formula E versions 1.8 seconds was the acceleration from 0 to 60mph. That’s besides their first water cooled motor innovation

[@vigneshb5347]

..also Ferrite is more brittle than Neodymium Magnets, and comparatively more sensitive to temperature.

[@WJV9]

Permanent magnet motors and synchronous reluctance motors have been around for decades and therefore Tesla had nothing to "Re-Invent" they just took advantage of designs that had been developed for robotics and automation devices. Also you keep referring to induction motors as having a rotor made of aluminum bars formed into a cylindrical 'squirrel cage'. What you fail to mention is that the aluminum bars are pressure die cast into a 'laminated iron rotor' which is necessary since any 'air gap' will reduce the magnetic flux density which will cause lower power/torque and loss of efficiency in the motor. The laminations are electrically insulated from other laminations to prevent eddy current losses in iron rotor and stator. There are also 'Switched Reluctance' motors that have efficiencies similar to permanent magnet motors but SR motors don't need any magnets on the rotor. They do have vibration and noise issues however and more design improvements need to be made before they are usable in automobile power applications.

[@haddenindustries2922]

This is Nikola Tesla one of the greatest inventors ever Me: Alright we're off to a good start Inventors like elon musk Me: rolling out

[@Smartiezs]

hey look it's the second roadster, coming right from the factory. it is 2017 right?

[@Suzanne-p9q]

Thanks u so very much you don't know how you have helped me and My family ️

[@terrydavis2552]

Outstanding explanation of the Tesla motor tech! But what about all the bad news hounding Tesla lately? What does it mean in your expert opinion?

[@brylozketrzyn]

AC motor was NOT invented by Tesla. It is popular myth that everyone keeps repeating. Two phase induction motor was invented by Galileo Ferraris. Tesla was hired by Westinghouse (who already was working on own AC system to avoid royalties) to invent distinct AC motor. Both mentioned were enought to get a patent but both had similar issues - low power output. Ferraris motor was refined by Dobrowolski (kinda successfully, because it had 100HP instead of a quarter) and two years later Westinghouse had his engineer refine Tesla wirewound one.

[@garryclelland4481]

thank you for injecting a large chunk of actual truth

[@docjun3588]

There are other inventors who contributed much to the development of electronics and electrical systems. AC is good only for long distance distribution. DC is good for electronic circuits and today without DC there would be no gadgets, computers, electric bikes and cars!

[@jacobhudec7817]

Funny how Tesla is getting the credit for this when it was Toyota who did all the ground work with the Prius. Early model s’s even use the Prius inverter board. Teslas biggest contribution is the carbon sleeve from the plaid.

[@dominikkruszewski6727]

Can induction motor turn mechanical power into electric? I thought that asynchronous motors can't do that.

[@LakbayFilipinoy973]

You're truly a great professor!

[@paulsholar9356]

Holbach array was not mentioned in this video.

[@spencerlarson9357]

His voice is normal again! Was it a different mic setting?

[@djlager]

Faraday started the ac or let’s say electric motor first before nikola like a hundred years earlier in 1822 and Tesla mentions that in his papers

[@bingosunnoon9341]

Eddy currents? What features do they include in the design to reduce them?

[@olafzijnbuis]

Tesla was NOT started by Elon Musk. He bought himself in at a time when Tesla already had a product. The Tesla Roadster.

[@DragonZombie2000]

Tesla roadster was literally a blueprint, There were no employees or any factory when he bought it. There's a reason why he is considered legally a founder and not just a CEO who took over

[@timvlogtv512]

Would those ac motors be considered as a "brushless motor"?

[@DanMcMullan]

By the end, the interviewer realizes his career has imploded. 😂

[@Miguel-x2l]

My Indian engineer friend made a magnetic motor the runs only on magnet's..we went to Seattle back to Cali...eat your heart out tesla😅

[@joycebarker1488]

ELON MUSK IS ALSO A GENIUS! . He will also, never ever be forgotten, for all time!

[@fred-qy4lo]

He also has a musk about him.

[@joycebarker1488]

@@fred-qy4lo I hope by saying musk, your'e not saying that he stinks!

[@fred-qy4lo]

@@joycebarker1488 Yes, he smells like trumps a ss.