How does an Induction Motor work how it works 3 phase motor ac motor

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In this video we take a look at the induction motor to understand how and why it works. We include animations and real world examples to help you learn the basics of induction motor working principles.
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Пікірлер: 223

@EngineeringMindset 3 жыл бұрын

⚠️ *Watch the new version of this video* ➡️➡️ kzfaq.info/get/bejne/a594ddJ6veC8j5c.html

@EngineeringMindset 7 жыл бұрын

⚠️ *Found this video super useful?* Buy Paul a coffee to say thanks: ☕ PayPal: www.paypal.me/TheEngineerinMindset

@baldrick2352 4 жыл бұрын

My question is: When the rotating stator field induces a field in the rotor, does the rotor chase the stator field or does the rotor get pushed around by the stator field (repelled by the like poles in the stator)? In other words, does the squirrel drive the cage or does the cage make the squirrel run?

@yungmaz13 3 жыл бұрын

Baldrick, if u explain more clearly i may be able to help u, by stator field do u mean magnetic field? Because a stator is a component of the motor i dont think theres any such thing as a stator field

@AR-iu7tf 6 жыл бұрын

Very clear explanation the crux of the induction motor working - much better than some of the higher quality video productions here. In fact most of them miss to explain the key reason why the rotor actually rotates in contrast to your clear explanation. Thank you !

@nidhinbenny7975 4 жыл бұрын

Hi, very nice video! Since you guys are talking about induction motors specifically, I would also mention that the rotor spins at a slower speed than the stator magnetic field (for an induction motor). The difference between the stator field's speed and the rotor's speed is called the slip speed and is a central object in induction motor control. The animation shows the rotor and stator spinning at the same speed, which is how it works in synchronous motors (synchronous => same => same speed). Also, the induction motor effectively works something like a transformer (with the stator being the primary and the rotor's bars kind of like a secondary). At least at an undergraduate level, we are taught to model induction motors in a very similar way to the circuit model for transformers. But, I understand this wasn't supposed to be a very technical overview. For anyone who would like more in-depth information, I suggest the book "Electrical Machines, Drives and Power Systems" by Theodore Wildi. :)

@EngineeringMindset 3 жыл бұрын

NEW! Check how AC motor works here kzfaq.info/get/bejne/a594ddJ6veC8j5c.html

@alak3073 5 жыл бұрын

thank you for these videos we are looking for more please keep it up

@khumaranasibli7668 6 жыл бұрын

The clearest explanations i have ever seen 😊 Thank you sooooooo... much 😊 i cant believe there would be such an amazing explanation 🤗🤗🤗

@mygatunes 6 жыл бұрын

Really nice and clear explanation and presentation with a bonus at the end that made me laugh because of the opposite direction of the shaft. :) but really.... WELL DONE! Thanks!

@vilembesta1699 5 жыл бұрын

great work, Sir! thank you for the video!

@roberthatcher2773 4 жыл бұрын

Just come across this Channel. Great vids, great explanations and a great refresher for me, thank you!

@andreykh88 4 жыл бұрын

Bravo! I love your lessons!

@salahdehina9733 5 жыл бұрын

i can't thank you well enough! i was loosing sleep because of this but now that i understand i can finally move on

@00crashtest 4 жыл бұрын

It's funny how the introduction of this video is also the sound of an induction motor starting up. 😁

@williamgardner1762 4 жыл бұрын

table saw

@joedog62 4 жыл бұрын

Like every video?

@user-bl6mv4nv9h 2 жыл бұрын

In 90-s there was a strategic game called "Totall annihalation", and there was a sound like that when robot producing factory were finishing the one

@Derek.Colton 4 жыл бұрын

Great videos, Im retired from electrical field. Power Generation, Electrician, Lineman, Instructor... attended many classes rarely seen electrical basics presented completely accuratly, yes trouble shooting the instructor was my way of countering the boredom at times. You've done an exceptional series here, the subject materiel and supporting visuals are a great balance of keeping it short, simple yet very informative. i look forward to thd more advanced topics you hinted at. Heading over to get that cup of coffee you well deserved! Quick questio, where can I find a generator other than mechanically driven AC? Just kidding around. Thanks Paul DAColton

@ande_samuel_stud 3 жыл бұрын

You nailed it! Thank you so much. You made my day.

@birukkifle4990 3 жыл бұрын

simple but powerful. it is a spoon feed video. Thanks a lot!

@hondagoal 6 жыл бұрын

Great Video. THX.

@supriyasha2543 5 жыл бұрын

Wow this just excellent!

@im_cpk 3 жыл бұрын

Best Animation !! You showed... Thanks a lot 😀

@rereaofoliki4637 4 жыл бұрын

Thanks alot for your video here I found it really hard to understand the squirrel cage but You explained it well and clear more than our lecturers here. First time to watch your video Thanks

@dhokiadharmesh8209 3 жыл бұрын

Dude, you make nice animations, keep it up. they solve my problems

@bushracanaan5037 6 жыл бұрын

Thank you guys very much I spent 5 years in the school of engineering never getting a clear vision on this particular concept

@_Wai_Wai_ 4 жыл бұрын

Those engineering professors were very bad at getting their point across. I feel some of them are just poor health and burnt out from the other things they were involved in.

@tkk73 7 жыл бұрын

Excellent description

@ryanscott8232 4 жыл бұрын

Thanks for the video mate, big help and much appreciated 👍. Liked and subbed

@hepburn118 7 жыл бұрын

Excellent video.

@joncorklin 3 жыл бұрын

These are great videos!

@santanacasas1 4 жыл бұрын

Thanks a lot friend you are a top-notch teacher

@jdeere1837 4 жыл бұрын

One important missing part is an explanation of how the magnetic field is induced into the rotor. It is not a permanent magnet, as might be inferred from the animation., but rather is an electromagnet created by the current induced into the squirrel cage bars. How that occurs is not at all obvious, except to Nikola Tesla, who invented it. I, and most of us I think, need to have it explained.

@DrPowerElectronics 4 жыл бұрын

Indeed. The Rotor N and S go around as in the annimation, BUT you are right the bars and therefore the rotor has a very small 'slip' so goes at a little lower speed so the annimation is sadly wrong. Hence the US call it an Asynchronous motor. The small 'slip' is to give us flux cutting and therefore the volts in the rotor bars and the current. It is tricky to annimate well and this one is very close as EVERYTHING is synchronous EXCEPT the rotor. Even the rotor current pattern (as the magnetic fields have to be synchronous.)

@arielmcdowny2367 3 жыл бұрын

Thank you, glad I read the comments first before watching the video. I searched for induction motor to know how the magnetic field is induced since there is no permanent magnets presents.

@1mostwanted253 3 жыл бұрын

imagine inventing something only for your last name to be used to name a car brand that uses your technology

@EngineeringMindset 3 жыл бұрын

NEW! Check how AC motor works here kzfaq.info/get/bejne/a594ddJ6veC8j5c.html

@mohamedsulemana.a.3028 4 жыл бұрын

Thank you so much!

@PsyMongazoid 4 жыл бұрын

Very nicely explained.

@EngineeringMindset 5 жыл бұрын

⚠️Learn how *TRANSFORMER WORKS* here: kzfaq.info/get/bejne/i8mYnNd5rKyYnmw.html ⚠️

@jonahjin Жыл бұрын

Thanks very much!

@jatindermadan 3 жыл бұрын

Excellent video explanation

@tomheath8975 4 жыл бұрын

This vid is so much quieter than the rest in the series (just letting you know ;))

@DevanshuKamble-uz3fi 11 ай бұрын

perfect logical and conceptual explaination of topic it destroyed all confusion from my mind and made a perfect clear picture with animation

@fifthavenue8505 Жыл бұрын

Only 218 comments? I can't believe it!!! You have no idea HOW much I have wanted to understand how a motor worked!!! THANK-YOU!!!!

@EngineeringMindset Жыл бұрын

If you think this was good, you should check out the newer version. Ridiculously better. How did you find this video btw? I need to update the link to the newer video

@thisistheway2996 3 жыл бұрын

Fantastic video

@Elektron318 Жыл бұрын

Good for basic understanding

@sharrybhai9217 3 жыл бұрын

Superb ExplanaTi0n❤❤❤

@johnkeepin7527 4 жыл бұрын

Well presented; in particular, the graphics showing how it works is clear. A bit further on, one could add that 3 phase motors are now often used under variable frequency, to control the speed - loads of them in use as ‘traction motors’ now, both on the roads and the railways. Traction motors are often also used as alternators for regenerative braking, so one could mention that they can be controlled that way round by varying the electrical load, either by charging batteries or feeding back into the supply grid. To some extent, this became possible due to the advent of high power electronics for dc/ac inverters (IGBT), but that’s another subject!

@EngineeringMindset 4 жыл бұрын

VFD Video is now live! here: kzfaq.info/get/bejne/r6uAmJqDqdrPl6M.html

@gbpce7766 4 жыл бұрын

Awesome content like it:)

@edgeeffect 6 жыл бұрын

A thought I have many times when working with motors is "Who keeps squirrels in cages anyway?!"

@JasonMasters 6 жыл бұрын

Whenever I heard the term, I always thought of the hamster and mouse exercise wheels rather than actual cages.

@justinclark9258 4 жыл бұрын

It's supposed to be a cage to keep squirrels out.

@donnajones1603 4 жыл бұрын

Obviously an ingenious individual that captures the pesky little varmint then puts it to work spinning its cage similar to the rotor except it relies on squirrel muscle instead of electrical input for rotation. Although direction is random whereas with a three-phase electric motor direction of rotation is easily determined and maintained by changing any two wiring connections.... simplicity itself especially for common backward inclined fans, or pumps in which direction is paramount for proper operation & corresponding amp draw.

@mugishastevenyoutubestuden9311 Жыл бұрын

Thanks we love you

@matthewwideman2824 4 жыл бұрын

I like the motor firing up at the beginning of the video

@mba2ceo 4 жыл бұрын

8:21 Still the BEST explanation I seen

@zalismahmud9469 5 жыл бұрын

very very well

@nurfetalic205 7 жыл бұрын

It's excellent presentation you are very good my friend thank you.

@joshuaennis1502 3 жыл бұрын

Thank you sir because of you i might just get a plant engineering apprenticeship at my job

@jnolette1030 3 жыл бұрын

Same here and I'm really happy about it

@oliverrojas7117 4 жыл бұрын

excellent video corresponding how to opposing mangetic fields, one in the rotor and the other in the stator, cause rotational movement. i see these machines in fire pump rooms. thanks

@michaelking8508 2 жыл бұрын

Very good job explaining everything keep up the great work

@EngineeringMindset 2 жыл бұрын

Check out our newer version sooooo much better

@lordrykardthesnake 2 жыл бұрын

Cool video

@hassanakbari7002 4 жыл бұрын

wonderfull

@odedejohn3026 3 жыл бұрын

Thank you so much for this 🤩🤗🤗😍😍😍!!!!! You just saved my life, lol 🥰

@EngineeringMindset 3 жыл бұрын

This new version is far better kzfaq.info/get/bejne/a594ddJ6veC8j5c.html

@EXPLORINGPIPING 6 жыл бұрын

100%concept

@mr.sayemsirmr.sayemsir9302 3 жыл бұрын

Good

@mauntaxthelegend3188 3 жыл бұрын

love your content !

@EngineeringMindset 3 жыл бұрын

New induction motor video coming on Wednesday

@EngineeringMindset 3 жыл бұрын

NEW! Check how AC motor works here kzfaq.info/get/bejne/a594ddJ6veC8j5c.html

@elroymaynard1114 5 жыл бұрын

Well today is the day I learned that the fan, brings in air to the fins on the ends of the pump keeping it cool wow. But think the cover for the fun, helps guide the win to the fins?

@premkumar-sr8cg 4 жыл бұрын

The conductors are in slightly cross because, to prevent the magnetic locking and not for to increase torque 🙂

@mohammedowais4793 7 жыл бұрын

Thank u sir

@rohitrahul1762 4 жыл бұрын

Make a video on Armatute windings and methods of starting

@NotTobi 3 жыл бұрын

9:00 Yellow will reach it's peak value first because when analyzing waveforms, we start from t=0 point. Red is in 3rd position. Please correct me if I am wrong. LOVE THE VID THO!!! :)

@ketoman4057 5 жыл бұрын

I get it (I think), with 3 phase the gaps between peaks (and troughs) are smaller than with 1 phase, so you get close to a direct current effect which is continuous, hence more power?

@pholososello1299 2 жыл бұрын

Thank you

@EngineeringMindset 2 жыл бұрын

Please see the newer version, much better

@pholososello1299 2 жыл бұрын

@@EngineeringMindset I just did, thank you so much. Second video simple shows how much you love your work. It's amazing.

@meincontext Жыл бұрын

can you do a vid on radians and how to use them to measure an engine's ability to lift (helicopter) and other uses for it?

@alfajuj 4 жыл бұрын

I think it's helpful to visualize the stator as the primary coil of a transformer, with the shorted field of the rotor as the secondary side of the transformer. That's how the field can be induced into the rotor without brushes. (Tesla's goal was to eliminate the brushes) Asynchronicity (inherent slip) is an important characteristic of induction motors which needs to be explained. This is why they are also referred to as "asynchronous motors". Due to Lenz's law, the rotor has to actually lag behind the rotating magnetic field in the stator for the induced current to occur in the rotor. If the rotor actually catches up, the induced current in the rotor fades away. So the operating speed will always be less than the synchronous speed.

@EngineeringMindset 3 жыл бұрын

NEW! Check how AC motor works here kzfaq.info/get/bejne/a594ddJ6veC8j5c.html

@stevenbernstein1978 4 жыл бұрын

Please produce a video of a single phase induction motor with capacitor start/run.

@EngineeringMindset 3 жыл бұрын

please see our video on circulating pumps

@sudhanshushinde9483 4 жыл бұрын

How universal motor work on both supply AC as well as DC. Please make a video 👆👆

@nwachukwuprecious3401 4 жыл бұрын

I'm actually a 14-year old with an interest in electrical engineering and I want to say I really enjoyed the video. Thank you very much.

@bestredditstories1158 5 ай бұрын

You should be around 17 or 18 now. Are you in college for electrical engineering now?

@veerabhadrayyamallikarjuna9714 2 жыл бұрын

Sir please upload video of berry type transformer deeply. Its useful to all and this topic is no one done correct.

@inhibited44 5 жыл бұрын

My electrical engineering professor was excellent, but when I asked him when we get to see motors, he said that's another course. Between Jerome fielding and this , I understand three phase induction motors

@leebulldog87 4 жыл бұрын

Jerome fielding is great at demonstrating these motors with small hand built models.

@Pedrohramirez 6 жыл бұрын

the sound is too low,

@bobashkirkou2401 4 жыл бұрын

Pedro Ramirez thank god we can turn our volume up

@kamleshsharma336 4 жыл бұрын

Our phones have sound buttons for controllingthe sound bro.

@zanexx4409 3 жыл бұрын

I have all volume controls at Max and still cannot hear his lecture

@lsx_moe 4 жыл бұрын

Could you do a video on variable frequency drives?

@EngineeringMindset 4 жыл бұрын

VFD Video is now live! here: kzfaq.info/get/bejne/r6uAmJqDqdrPl6M.html

@brofist3777 3 жыл бұрын

Great explanation. I have been looking for a video like this one. But I still struggle to understand the neutral wire for both configuration. Is it internal using the casing or the phase wire doubles for that. Thanks.

@EngineeringMindset 3 жыл бұрын

kzfaq.info/get/bejne/a594ddJ6veC8j5c.html

@Tmrfe0962 5 жыл бұрын

Great videos, compared to other videos, the audio is rather low? Thought it was me, however, the ads attached, are at a uncomfortable level, then your voice is awfully low. Thank you.

@timothysands5537 6 жыл бұрын

What device is used to manipulate the magnetic fields on the rotor? I know armatures are used on small dc motors with brush contacts, but how do you make an electrical connection to the moving rotor? *Update* I found out that DC motors that use only wire to generate both fields on the rotor and on the stator are referred to as 'Series wound' electric motors. They typically use a commutator with carbon brushes to contact the moving rotor - thus changing which coil is creating a magnetic field on the rotor.

@EngineeringMindset 4 жыл бұрын

DC motors explained kzfaq.info/get/bejne/fbeRp8xzkrCslH0.html

@mighty7334 2 жыл бұрын

Can you explain control rotation on a 3 phase motor? Ive been told you have to just swap any 2 phases to put then 180 out of phase but i never understood that because there still being a third phase. maybe im overthinking it.

@jhonpaulalmero3417 3 жыл бұрын

Hello the engineering mindset.. . Can you maybe make video how generators/alternator works. Thanks 😊

@EngineeringMindset 3 жыл бұрын

Already made: kzfaq.info/get/bejne/oMqDfs-YnZaomok.html

@jhonpaulalmero3417 3 жыл бұрын

@@EngineeringMindset ohhh yes thanks you 😊

@azeemahammed8646 4 жыл бұрын

Hai, Is it possible to use squirel cage motor Instead of slip ring motor by connecting with vfd and run at lower frequency at the satrting for higher torque purpose?

@baldrick2352 4 жыл бұрын

@Tbales0950 5 жыл бұрын

Do you have any separator videos

@MA-km5rp 3 жыл бұрын

i have a question. the wounded coil across the stator plays as an inductor ? or what ? what inductor is used for ?

@jeannicolasbossert 3 жыл бұрын

Thanks a lot for all your teaching videos. How do you manage subtitles in foreign langage ? I'm french and even if I'm an english speaker, it would nice to translate in french in a better way than the automatic translation.

@EngineeringMindset 3 жыл бұрын

It was open to the community to edit but KZfaq removed this feature last week unfortunately. Do you know we have a French channel? Link :kzfaq.info/love/pVHVdo-eYw_H_-rEXWlsZw

@cagmito76 5 жыл бұрын

was the hot spot a sign of pontential future problems ?

@EngineeringMindset 5 жыл бұрын

Yes, the insulation can deteriorate and cause a short circuit.

@shihabahmad292 4 жыл бұрын

bro please make vedeo about basic principle of operation (AC and DC servo motor with brake) .

@EngineeringMindset 4 жыл бұрын

DC motors explained kzfaq.info/get/bejne/fbeRp8xzkrCslH0.html

@EngineeringMindset 3 жыл бұрын

NEW! Check how AC motor works here kzfaq.info/get/bejne/a594ddJ6veC8j5c.html

@ryanscott8232 4 жыл бұрын

In your example at 9:30, your magnetic field is going the wrong way. And in the sine wave the strength actually goes R B Y R B Y, not R Y B R Y B like you explained. Because the after the positive R peak, the next strongest was the negative B peak, then the positive W, then the negative R, then the positive B, then the negative W, the back to positive R.

@Jacob-ge1py 3 жыл бұрын

This would be great if i could hear it

@EngineeringMindset 3 жыл бұрын

Please see our new version of the video, much better quality

@Jacob-ge1py 3 жыл бұрын

@@EngineeringMindset Thankyou! I should have noticed the new one

@mba2ceo 4 жыл бұрын

plz do same for SINGLE PHASE

@vedymin7 4 жыл бұрын

Hi :) in 9:33 ithink it should be: "Place the rotor inside", not "Place the stator inside". Right?

@BobbyBouche00 4 жыл бұрын

Glad I'm not the only one who was confused for a minute haha

@jigendaisuke 7 ай бұрын

where is the wave washer use in bearing? what is the purpose?

@rayceeya8659 6 жыл бұрын

Something that always bothered me is the face that I can't seem to come up with a good explanation of why the rotor of an induction motor works. In the example of a permanent magnet motor it's super obvious, but trying to explain how those simple hunks of metal work in the rotor isn't obvious to most people.

@alext9067 4 жыл бұрын

It's not obvious to me.

@anthonyjones634 4 жыл бұрын

The rotor becomes a temporary magnet when power is applied. The brushes supply power to the commutator( the conductors that run across the rotor illustrated in the video) and this is what gives this hunk of metal it's magnetic property.

@MrJeremiah135 3 жыл бұрын

@@anthonyjones634 Commutators are used in DC motors.

@aoiminase 5 жыл бұрын

It is sphase in 120 degree too, right?

@danielcornwell8267 3 жыл бұрын

Does the looped wire need to be insulated against itself. If that makes sense.

@raulkashyap9469 4 жыл бұрын

Please explain how the capacitors help in starting of a 1-phase induction motor

@photojunky7342 4 жыл бұрын

Hi there I'm a motor winder and mechanic. Essentially there are two types of capacitors used in a motor. A run capacitor and a start capacitor. The run capacitor, which is usually a silver canister, is mostly used for efficiencies these days. It helps to clean up the sine waves and allow for cleaner current. Start capacitors are normally a black plastic canister. These build up a generally much larger charge and are in series with the start windings of the motor. When the motor starts these take on a charge and are discharged into the start windings giving the motor the extra torque needed to start in a short amount of time.

@gsanchez9457 4 жыл бұрын

If the cage end caps are shorted, how is there an organized flow of current on the squirrel cage bars? Ie: how come the current isn't randomized and doesn't make the rotor do weird things?

@benisleviosa4830 6 жыл бұрын

so when north is up ... the sine wave is peaking up +... meaning the flow is counter clockwise, and when the north is down ( south up ) the sine is drawn negative down meaning flow is clockwise? Is that part of the illustration correct is this the orientation of the sine wave thanks!

@andrewdarley8988 4 жыл бұрын

Re 9.55. Surely opposite poles ATTRACT not repel as stated here and as the rotor lags behind it is pulled round.

@revanslacey 4 жыл бұрын

Has anyone else noticed that the cogs in the logo will jam rather than turn? That's pretty much what my brain was like during my engineering degree.

@EngineeringMindset 4 жыл бұрын

You can't tell if the gears are all interlocked or staggering from that perspective. If they are staggered they won't jam.

@nicoletgee6167 4 жыл бұрын

I do want to know more about motors dor you have any explanation about Three phase motors? Like hysteresis motors? Love your videos it helps me a lot.

@imajeyelectrical581 6 жыл бұрын

why the rotor bars are skewed ?and how does the skewing woking principle works ?

@EngineeringMindset 6 жыл бұрын

Causes an unequal magnetic field which helps it spin

@DeDustMet 3 жыл бұрын

Man, can you tack in back emf in this explanation about three phase motors and generators ? Why coils in your examples changed the direction of magnetic field instantly?

@EngineeringMindset 3 жыл бұрын

Please see the new video on our channel for electric motors

@kyleysanford 4 жыл бұрын

Hi Paul, I have a 2-speed motor. How does the motor started change it’s speed?

@DrPowerElectronics 4 жыл бұрын

Probably changes the stator coil connections to give 4 poles N-S-N-S instead of two as shown. Rotor has induced currents so 'changes' without any switch to match the stator. Then it will go half as fast. Check the switch affair. I normally save this for my videos, but mine are not popular Hahahahaha