Very simple: by copying the patent drawings of the first dynamo, invented by the italian Antonio Pacinotti in 1860 and marketed by the french Gramme in 1869; then copying the patent and the drawings of the first induction motor (two-phase), invented by the italian Galileo Ferraris in 1883, three years before Tesla's patent. Not everything that is electric was invented by Tesla 😉
The easiest way to imagine it, is to imagine 2 magnets. Because that's all electricity is. The N and S ends attract.. and The N and N ends repel each other. So while one winding is attracting(pulling) one of the armature poles, the one previous winding is repelling(pushing) it. Helping it rotate. Since it's AC, the one that was attracting, is now going to repel it with it then completing the cycle(1 hertz).
No.Tesla was the smartest person to ever live. He was hit by lightning some day near a river and that hit connected a oart of his brain that made him a genius. He could read once a book and remember all.He didnt copy anyone , the others copied him. There are so many other inventions of him that in mear future we will use them such as wireless electricity.Also tesla wasnt serbian but jis parents were originated from north albania
No words to the video. It has cleared my many concepts related to induction motor. So perfect video. Thank you sir for your efforts. Please even make videos on other core electrical concepts...
Good primer and review. You cover the basics very well. From there, someone can learn more about the particulars that go into production design of top of the line production electric vehicle motors, but at least they would have a solid foundation of understanding from this vid.
Mast maja aaya sab samajh gya but sir wo number of poles inc liye to frequency inc hua aur isiliye liye rpm Dec kiye jisse frequency ko maintain rakhe ye baat ke understanding me problem ho rahi hai
@@smrtfasizmu6161 you mean you were exposed to some watered down explanation. This video is pretty watered down itself. Electromagnetism is one of the hardest physics topic you'll learn in college.
@@smrtfasizmu6161 We would have learned it in high school too if you Russians hadn't taught us to argue about chopping off dicks all day long in Commie-school. We need to get back to proper education, not foreign language and foreign sex classes.
Nobody has any concept of what a "squirrel cage" looks like. I use the term to my students but then tell them "hamster wheel". Everyone always goes, "Aaah!"
Mr. Raju Rastogi can you explain how induction motor starts? Raju : brrrrrm brrrrrrrm brrrrrrrrrrrrrrrrrrrrrrr brrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmm 😂😂😂😂😂
It has a moment of force, greater when speed is less, due to a rotational field, provided by inductor. At the time this field has a reaction with the rotor, where a current was induced. This rotor is at shorcircuit.That provides this moment. Current consumption at this time is high
Dear friends, Should I delete the old Induction motor video? This video is an improved version of our old Induction motor video. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-LtJoJBUSe28.html The new video has more information and better graphics.
Learn Engineering yes delete the old version video and post the latest one for the info and knowledge for all of us, as subscribers and followers.thank you
Learn Engineering i watched both the videos back to back .... I think this new video covers everything from previous video and extra .... So no harm in deleting the 0ld one ....Best wishes :)
Learn Engineering The New Logo for Learn Engineering is good!👍👍👌👌 I have a suggestion for your Logo. You should design your Logo like #Blueprint. and #RoughEngineeringSketches of one and more #SimpleButInteresting #TechnologicalObjects (such as #WindMills, #SolarPanels, #Rockets, #ElectricalMotors, #ProjectileMotionWithPathDiagrams , et cetera) and at the centre of them there should be written in Block Letters, #LearnEngineering . Thank you! 😊☺☺😊
Even though Tesla seriously worked on induction machines the credit for the basic invention goes to Ferraris. Tesla used rotating magnetic fields (RMF) created from a two phase system. A two phase system (as well as a three phase system) solves the main problem of a single phase feed which represents itself as strong power pulsation between zero and a max value over time. Two phase and three phase systems are both able to provide a totally smooth power flow from the grid. With that prerequisite, a constant torque over rotation angle becomes possible. Tesla seemed to have been stuck(?) to the idea that the rotor must be "connected" with the feed (two phases). His double loop rotor was the reason for a still considerable pulsation of motor torque, see video "Asynchronmaschine nach Tesla" (in German, there are also references linked). It must be mentioned a two phase system could have solved the pulsating torque issue, which was caused by the (double loop) rotor. While Ferraris did not have the pulsating rotor torque problem with his massive copper rotor the final solution came from Dolivo-Dobrovolski's invention of the squirrel cage rotor (which fixed Ferraris's drawback of huge magnetizing and eddy currents). At the same time it became clear that the creation of an RMF is better done with three phases (with regard to load on every used wire over transmitted power). It is sad to conclude but our nowaday's induction machines do not use invention's from Tesla.
@@quellstrom Yes and pigs can fly like another great (rofl) italian inventor Marconi who invented radio? Tesla spoke about AC current and 2/3 phase system in his first year of college (1875) in Graz but professors laugh on him because by them it was impossible and yes it was until 15 years later Tesla come to the US and proof them.
czas filmu 3:08 w tym rdzeniu żaden prąd nie płynie , ten prąd rozchodzi sie na klatki stojana i na blachy pomiedzy klatkami rdzenia aluminiowego wirnika ,a zmienne pole magnetyczne stojana łapie wirnik za klatki aluminiowe wirnika i następuje obrut .ps napisał : Poland Gliwice ul : łużycka
I remember going to a store one day and seeing a massive Farris wheel This giant wheel was being moved by 4 small motors each about as big as a shoe box Seeing that got me thinking How can we invent such a motor and not even bat an eye lid when we see it do these amazing things like turn a giant ferries wheel or move an electric car When I was there nobody seemed to think about what was moving that wheel They just assumed it’s just an electric motor That’s what I consider to be the most amazing thing about technology the most amazing things are invented but sooner or later they become so common nobody cares Think about that next time you send someone a text on your 1000 dollar smartphone
Good morning sir I had come to know and build the theory of SCIG( squirrel cage induction generator) Plz correct me if I am wrong and I would be "gladfull" full if u make corrections in this When we connect the SCIG with 3 ph supply to stator and the rotor is coupled to a prime mover The mg field is being produced in the stator and induced in rotor and now the rotor has its mg field the rotor is rotated above the synchronous speed i.e -ve slip Now the stator will be starting to provide supply to the grid And through the process of induction the mg filed is countinue to produce in rotor By the help of stator which it's providing supply to grid Since mg field is producing in stator and induced in rotor And the direction of mg field is reverse and the rotir directoin is reversed when compared to motor ( SCIM)
Thanks a lot Learning engineering team. your all videos helping me a lot to have strong concept about electrical engineering. Also thank you for a very nice 3d presentation. You guys deserves respect. Good luck
If I'm not mistaken, the b-field lines at 0:55 are pointing in the wrong direction. It is resolved at 1:01 when the rotor is added. Or maybe there is a reason for this that I am not understanding? But to me the first representation looks like the magnetic field lines are in the wrong direction in relation to the north south placement. Please let me know if I am mistaken! Great video, thanks
Dear Lesics Team, Thank you for the excellent videos. These are helping me tremendously in my engineering studies. Keep up the awesome work. Regards, Rajan South Africa.
A superb explanation with excellent graphics. You really cracked it here! I've worked with these machines for 20 years and always struggled to explain them to trainees. Thank you.
Thank you so much for this! Could you please do a video on the electromechanical induction meter and its working principles? I would appreciate it a lot.
Index: 00:17 Cutaway view of realistic motor 01:13 Simplified view of winding & stator 02:42 Squirrel cage winding interacting with RMF 03:38 Determining speed of the rotor 05:00 Simple, rugged construction compared to other common electric motor designs 06:06 Induction motor can be used as a generator for regenerative braking
This is pure genius in my believe. I mean, the slickness of the design and the creativity that must have gone into idealizing and crafting a motor that functions in this way is simply outstanding. Tesla was truely amazing
Once every few hundred years, a person exhibits a level of scientific or technological acumen high enough and powerful enough to qualify them as beyond genius: DaVinci, Tesla...these two were quantifiably 300-500 years ahead of their time.
Hii man your work is amazing but can you make an animation on slip of induction motor modt confusing part of induction motor. Including braking, motoring, generating all mode and relative speed concept 👍
Я понял только спмд, кондуктор, сейм и лупа - короче у какого-то кондуктора из сейма под лупу обнаружили спид! А этот кондуктор наверное стырил этот мотор и разобрал!
You cant use an induction motor to generate electric current because there is no permenant magnetic field. You need some kind of excitarion current to induce a magnetic field in the rotor for the moving rotor to produce current in the stator windings. And induction motors are also know as asynchronous motor because it is not synchronous because the rotor speed is less than the rotational magntic field. A synchronous motor which is used in electric vehicels has no slip because the motor speed is the sme ws the frequency or rotation of the magnetin field because it has a permanent magnet inside.
Electric cars use both. Some use induction motors, some others use permanent magnets síncronous motors. On the other hand, there are sincronous motors with different rotor. They can be used as generators. In fact they arr used in wind generators
Actually electric cars use permanent magnet rotor syncronous motors because they are even more efficient due to the fact that there are no losses in any rotor windings. Also DC motors are both easier and cheaper to speed control wich is why induction motors are mostly used in constant speed applications, only recently have the price on VFDs and high powered brushless DC motors dropped so much they can be concidered affordable for general applications wich is a bit of a shame because since both BLDC and induction motors have no brushes they are whisper quiet and last forever compared to for example universal motors where the brushes both wear out and make the motor loud as a jetplane (this is why hand held power tools, vacuum cleaners and kitchen mixers are so insanley loud compared to for example a stationary drill press and a refrigerator)
John Pekkala Not quite. Even though some eletric car companies use permanent magnets, The are some that use induction motors. One of them is called Tesla, which is, by a big margin, the biggest eletric car producer. It's allegedly a move to reduce costs, since rare Earth magnets suffered a reasonable boom in price in about 2011, jumping to a ridiculous ~1000% increase (if i recall correctly). That's mainly due to the increase in demand and limited supply. Don't get me wrong, Dc brushless motors are currently the most advanced motors. Their permanent magnets however make them a blind shot for high volume, such as eletric cars. Now, the reason most applications of induction motors are for constant speed has not much to do with the difficulty to control it ( considering nowadays powerful microcontrollers, and developed power electronics ) which nowadays is basically non-existant. The real reason is that induction motors have a small torque at low Rpm. Which forces some applications, to make it work at synchronous speed. Tesla seems to have found a way to circumvent this disadvantage of induction motors. I'm not really gonna discuss this here. It's true dc motors dropped in price . At least the small ones. The problem are the magnets.
As mentioned in the video, induction motors are used in electrical vehicles, which is far from a constant speed application. The new Tesla Roadster 2020 uses a 3 phase 4-pole induction motor.
John Pekkala sir in India the 3 three phase induction motor is fitted in loco motive to get high speed in Lower rpm three phase motors are so efficient and cheaper than any other
D/C used to rule the elevator world. As a mechanic, I have changed a few MG sets, that is motor/generator. A/C motor running a D/C generator. Back in the day, D/C motors were easier to control rotating speed, allowing a smoother elevator ride. Then, they developed variable frequency, and A/C motors were back in business!
The speed of the turning field (rev. per sec.) is frequency divided by the number of pairs of poles (f/p/2 or 2f/p). The stator can be wound for any number of pairs of poles. So we can have 60 or 30 or 20 or 15 or 12 or 10 or etc turns per sec.
The New Logo for Learn Engineering is good!👍👍👌👌 I have a suggestion for your Logo. You should design your Logo like #Blueprint. and #RoughEngineeringSketches of one and more #SimpleButInteresting #TechnologicalObjects (such as #WindMills, #SolarPanels, #Rockets, #ElectricalMotors, #ProjectileMotionWithPathDiagrams , et cetera) and at the centre of them there should be written in Block Letters, #LearnEngineering . Thank you! 😊☺☺😊
Amazing introductory videos with great visuals! You should keep it up! BTW, can someone explain me what does he say after 3:45 ? "...the magnetic field will never cut the loop.." I didn't understand that part :( What loop is that?
The loop he is referring to is the rotor bars, which you can compare to a (thick) loop of wire. At synchronous speed, the magnetic fields generated by the stator and rotor are rotating at the same speed, and thus there is no relative movement between the magnetic field and the rotor bars. Faraday's Law tells us that an Electromotive Force (EMF) will be induced proportional to the rate of change of magnetic flux through a closed loop, and as there is no (relative) movement under these conditions there will be no induced EMF (and no torque).
Abdullah yuksel......Hey suppose RMF is a thief & Rotor is a policeman Now you know If policeman(rotor) is trying to catch the thief(RMF) with same speed he is never going to catch him up. Later he is saying only when thief(RMF) will slow down , policeman(Rotor) can catch him
Would you please make a video about how generators produce Megawatt ? What's the mystery of load angle ? If you were to explain this phenomenon in term of magnetic field principle, I would certainly say that you are the best instructive and impressive ones on earth ! Thanks a lot
It would be great f you could upload a simple video showing the magnetic field around the coil *using the angle of **2:13* (this animation is too short, and start with a weird/confusing angle, after 2:13 it's easier to see, but it's too short). You already have made the hard work with your 3D software, you just need to publish a 1 minutes of it. Com'on!
I am a huge Tesla fan the man and inventor but while we pay respect to Tesla maybe we should also pay respect to Leonardo Da Vinci. Da Vinci made robots from wood, invented the helicopter, the glider, the submarine, the first diving suit, the parachute and many other things still in use today - like Tesla - he was man ahead of his time.
Hope the teaching in schools is some thing this similar! Students will easily understand. Unfortunately no one taught physics or any other subjects so simple in my school. Big 👍 for RU-vid university! Physics and maths were the most scariest subject for me in school. I never could understand in better way.
it starts like drrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr........ sir rummmm remember anything .
