Does this old Induction Motor still work? || How do Asynchronous Motors work? EB#46

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In this video we will be having a closer look at an old induction motor or asynchronous motor that I got lying around. In order to see whether it still works, I will show you exactly how to power such a motor and how it creates its rotational movement. Along the way you will also learn why such motor types are still the most widely used ones in the world and I will also partly compare them to DC, BLDC and stepper motors. Let's get started!
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Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod
(incompetech.com)

[@aboelishes]

i love how you say ''squirrel cage''

[@bazzle592]

Old Top Gear always said that the easiest way to identify a suspected German spy is to ask them to pronounce "squirrel"

[@Sarcastix7]

Squibble

[@vniization]

Sqvirrel

[@anonymoususer900]

It is scribble cage 😡😂😂😂

[@clonkex]

Ohhhhhh I actually heard it as "scribble cage". Not that "squirrel cage" automatically makes more sense to me.

[@martinest9458]

One big advantage with these motors is the fact that you can use a frequency converter, and thus adjust the speed of the motor without losing too much torque. There is a lot of good frequency converters out there that are not all that expencive. There is a lot of cool stuff you can do with the frequency converters. I have used this sort of setup quite a few times in packing robots, ship systems etc. The motors are cheap and reliable and you can use a 3x220 motor with frequency generator that uses 1x230 supply. Very handy sometimes As always great video !

[@blackturbine]

6:09 you should absolutely never power the motor up while the shaft key is still in it no matter how secure it is! Those things fly out you don't even see it and it can hurt you badly. Stay safe.

[@greatscottlab]

Not sure what you mean. Sorry.

[@user-hx7dc9uz6s]

maybe it is fixed in this motor, but i doupt it

[@TDG2654]

@@greatscottlab on the shaft of the motor there's a slot with a long square piece of metal in it called a shaft key. This key is used to transmit the torque from the motor to whatever is connected to it. The problem is that the key is only pressed into the slot, so powering up the motor like that could cause the key to go flying and hurt someone.

[@blackturbine]

@@TDG2654 it can literally fly like a bullet specially on 2 pole motors

[@maesto]

@@greatscottlab Um zu übersetzen: Den Wellenkeil solle man entfernen bevor man einen Motor startet unabhängig davon wie fest er sitzt, daher selbiger rausfliegen könnte. Was natürlich ins auge gehen kann.

[@graealex]

"Professionals" don't solder crimp contacts. That's a big no-no, especially on stuff that vibrates.

[@greatscottlab]

Haha you got me there.

[@bashaaksema94]

Yeah I was about to say that good catch

[@Scott_C]

Well. We're technically paying him for his work so technically he is a "technical professional". 😄 Also even pros make mistakes.

[@Willeexd1337]

Why is that bad

[@graealex]

@@Willeexd1337 Solder wicks into the multi-strand cable, restricting movement between the strands and promoting breakage when physically moved around. Basically it turns the section near the crimp into a solid-core cable.

[@raywelshman]

Hi Scott, many thanks for the very informative description of how asynchronous motors work, the way you describe the workings, even an old bloke (78) can understand, I have been dabbling with electronics for most of my life and never really understood how such motors worked. Many thanks young man, regards from Ray in North Wales

[@0gnob]

Honestly most of this just goes over my head, but i enjoyed it regardless. Stay creative :)

[@ehsnils]

3-phase motors are quite simple in reality,. There are three things that can kill them through normal use, overload, water in the coils or worn out bearings.

[@derjoba]

"I want to see if this motor works" "Ah I cannot look into it" **orders a new motor** "Now I understand..." stonks

[@boprosplumbing]

@HarleyHilderson lmao

[@PhG1961]

@HarleyHilderson I completely understand this. When I need something from my workshop, it usually takes several hours or from time to time days before I find it. So, instead of looking where to find it, I quickly order it online. Usually I get it faster delivered than that I'm able to find it. So I have most of my stuff double/triple, which makes retrieving the next time easier....

[@tin2001]

@HarleyHilderson I've found that 2 women will be compatible as long as you've disconnected one before you connect the other. For some reason this allows them to communicate correctly, and no magic smoke is emitted.

[@f.d.6667]

MAKER manifesto: If you can't open it, you don't own it ;-)

[@szerocools]

knowledge has a price.

[@gartmorn]

This brings back many memories of working as an electrical engineer in a power station. We worked on all sizes of induction motor from 415v to 11kv. We did routine maintenance and fault finding on both motors and associated switchgear. I could almost strip and rebuild one of these blindfolded!

[@blockcamp]

11kv motors?? damn, that is sick

[@LukeTN27]

Really love your vids. Keep up the good work. Cant wait for the next greenhouse video

[@DD-gm3fo]

Same

[@greatscottlab]

Coming soon!

[@ScrotN]

GreatScott! Have you tried adding some artificial UV light for the plants so that if there are days that rains a lot you can still at least keep the plants alive?

[@spazionauti2008]

Just a little safety tip. When there's need to test a motor that isn't connected to anything, always put some tape around the mechanical tab. Because due to the centrifugal force it could fly away and hit something or someone. Usually when you open an asynchronous from the box, it should have a plastic protection for the tab.

[@robomaxx8719]

Love your videos and the way you explain things... You are a source of inspiration to me and majority of young electronic lovers.... Thanks love you bro

[@albanjuan106]

Hello GreatScott, i’m from France, and i just wanted to say your channel is the best to watch cool videos about electronics and learn a lot of things. Thank your for the time you r spending on every video, continue in this way it’s really good. Bye !

[@electronicengineer]

Excellent explanation on how an asynchronous motor works. Particularly the "star" vs. "delta" wiring explanation. Thank You!

[@charupandya5262]

I was waiting for induction motors for eternity thank you

[@maxketschik5625]

"There's a lot more to learn" Oh boy if they knew...

[@Kalvinjj]

Engineering can make any brilliant mind even more brilliant, but at the cost of sanity

[@frannas1477]

@@Kalvinjj Relatable

[@panierter_luan]

Welcome in the world of Electrotechnics/Engineering...

[@notgray88]

"Never work with 230/400 V if you are not a professional." Me playing with 3 microwave transformers: 😅

[@baitodansu]

Lol

[@scientistBENIELSLAB]

Be careful or 😳😬🤪😵😷🤕

[@jaidheersirigineedi8110]

Glad you are still alive

[@zumbazumba1]

Thats a stupid statement -wear rubber gloves and nothing can happen to you .Worst case scenario breaker switch goes off.

[@jaidheersirigineedi8110]

@@zumbazumba1 Yeah No chance of electric fires. 😐😒

[@Native7i]

watched all 46 videos back to back within one day and I feels like I need human surge protector. So much current flowing through my mind

[@PhG1961]

Awesome video and also very well explained !! Great job from Great Scott !

[@tarhyung45]

Finally understand how these motors work! Thanks Btw love your videos!!!

[@greatscottlab]

Thank you!

[@martinsindans1341]

This video has helped me! Now I know whether to connect in the star connection or delta. I have some 400/690 v motors at my farm

[@TechsScience]

I was in search of such vidoe explaining the motor in detail Thanks for this

[@b4uc2far95]

Great work. You did a great job explaining this. We use a lot of 3 phase 480 Volt motors where I work as well as several 4160 volt motors. The stator is large enough to stand inside on the 4160 volt compressor motors we have. It’s a lot of fun to work on them.

[@aps7637]

i would like to know as well

[@b4uc2far95]

maxhouseman The United States. The most common motor voltages here are 120/240/480 but in some industrial settings we use 4160 volts. We typically use a VFD to start motors this big in order to ramp them up, then we switch them over to line voltage once the VFD and line voltage are synchronized.

[@b4uc2far95]

maxhouseman that’s really cool. I’m an electrician and instrumentation technician here in the states. We bring roughly 15 KVA in to our facility’s switch gear then distribute 4160 and 480 volts out of them. We use transformers to get our lower 120/208 voltage for things like lights and basic power panels. We also use a lot of 24 VDC instrumentation (flow meters, temperature transmitters, level transmitters, and control valves). There’s never a dull moment with this much stuff.

[@b4uc2far95]

BTW our facility manufacturers ammonia nitrate so as if the multitude of different equipment doesn’t make it exciting enough, we’re producing hundreds of tons of Ammonia Nitrate solution too. It’s a very cool process but can definitely be super dangerous.

[@Daniel-ne2tg]

I learned about AC motor at University. I have a lots of them. (300 W to 2kw motors ). Great video!

[@RomanoPRODUCTION]

23 years ago, I've learned this at the University. Good memories for a very old man.

[@younus2]

Great stuff, love your videos!

[@cottsak]

I finally learned why that cap exists. Thank you!!

[@idus]

I wish I saw this 2 months ago when I got my compressor working. Very awesome video. Thank you

[@mr_sheen_asg]

Haha took be back to school 17 years ago, love it 👍👍👍

[@julianguerra6974]

Awesome video sir!! Like always

[@FerintoshFarmsPhotography]

I had a super old one that has been sitting outside in 4 season weather for years that still works just fine to pump water. I ended up having to use it when our main house pump was not working and I didn't know how to fix it at the time. I ended up doing a small series called of videos about my struggles that summer lol, was tiring and I don't miss it.

[@azuvan]

Excellent video, as usual!!! If I can suggest, it would be terrific if you can make a part2 video about speed controlling of these motors.

[@DreThePlug]

Dope video Greatscott alot of good knowledge related to motors Thanks !

[@RotaruCosminLeonard]

Creating an a flow control system would be amazing for home appliances. I could not find something similar. I am looking forward for working on such a system ...as soon as I can get a pump that I can play with.

[@daemiax]

For a second I thought I clicked at one of The Post Apocalyptic Inventor's videos after seeing the thumbnail. :D

[@caffeinatedinsanity2324]

DIY or Buy: VFD (or motor drive) And yes safety will be a problem

[@emanuelgoncalvessantos4499]

Up

[@Dark_Matter2]

Great video, the explanation is very correct

[@newburypi]

Nice video. Now to work a great big stinkin' asynchronous motor into my next project. I've got a 1/4 horse, single phase motor in the garage, that's been waiting for a home. ;)

[@abdulkader5470]

Very useful video. I love this. Thank you very much.

[@Davidslabofficial]

Thank you for sharing And explaining it so well Thank you I have learned a lot from u Keep growing and Making awesome videos Thank you again 💓💓

[@ammeydan]

Gteat video and as always, right on time for my projects!!

[@heronguarezi6501]

This is a excellent video. Congratulations! More towards what this channel was in the past. Maybe a bit less interesting to some but for me perfect.

[@hisuiibmpower4]

I really wish this channel can provide introduction and use of some exotic types of motor such as linear servo,voice coil and laser galvo

[@cri5706]

Ich hab das alles in der Ausbildung gelernt und hab sogar selber Motoren gewickelt. Sehr interessantes Thema.

[@PaceWithGrace]

Excellent descriptions! I learned some things and really enjoyed this video. Thanks Scott!

[@BalintNandori]

U r comment is one week ago? How?

[@PaceWithGrace]

@@BalintNandori Early video release for Patreons.

[@iroll]

Where I work, a lot of our equipment is belt driven, so we select the output RPM by selecting the ratio between sheaves (pulleys).

[@parmindersingh8164]

finally some real industrial engineering coming on to the channel, waiting for the introduction of Programmable Logic Controller on Great Scott

[@theCrazyFrenchGuys]

I always dream about an 24v ESC driving this kind of motor in huge R/C projects, like you said it's cheap and reliable.I dismantled recently a Junheinrich electric transpalette and they use a special ESC capable to transform 24VDC in a 3 phase 14volts with the same kind of asynchronous motor but with 3 14V winding.

[@suharto9313]

Thank you for the link Mr

[@moonmatthew]

Yay next super awesome video! Btw im from Czech Republic :D

[@Guusie66]

Excellent video 👍😄

[@connecticutaggie]

I was just having "the talk" with my son - about motors of course. AC Induction motors are the power workhorse of the house - pumps, fans, compressor (AC and refrigerator), Washing Machine, Dryer - because they are cheap power; but, only when you can use them for single speed on/off power. The electronics required to control their speed usually costs more than the motor. For small motors, ones that run on batteries, an/or ones you need to change the speed of, brushed DC motors are still the king. The new kid on the block in the house are brushless DC and AC synchronous motors (which are actually the same thing) as the the electronics to drive these are getting cheaper all the time and with all the advances in Rare Earth Magnets, these motors can pack a LOT of power in a very small space.

[@johnmiller8884]

"only when you can use them for single speed on/off power." And not even a constant speed. your application need to account for the fact that slip varies by load.

[@connecticutaggie]

@@johnmiller8884 I agree, the speed of induction motors is load dependent; but, that is even more the case for DC motors. The only easy constant speed motor is a synchronous AC and that is rarely/never use in US homes due the the lack of three phase power. That is changing now some as the cost of electronic motor control has really dropped (Ex: drones) and they are finding their way into places like cordless drills, etc. The one challenge to overcome is that Induction motors are just so cheap - less that 1/4 the price for the same power and the only control components they need is a capacitor and maybe a time/centrifugal switch.

[@arthurmead5341]

How old is he?

[@connecticutaggie]

@@arthurmead5341 He is 20 - Rising Junior ME in College and on a top Formula SAE team that is moving to E-Car.

[@reddcube]

I never thought of describing the single phase induction motor as an ellipse, but it does make sense. The magnetic field is stronger on the main winding. and the field is slightly weaker on the auxiliary(capacitor) winding.

[@Jeff121456]

The star configuration is also known as wye due to it looking like the letter Y.

[@darkstatehk]

It's also found in the flux capacitor.

[@arthurmead5341]

Y don't they just call it Y

[@Daniel-ne2tg]

At University we called Y-star and "delta" - triangle

[@chancehamaker8687]

Great video!

[@josemanuelalogoadjomo7863]

good video sir Scott I did learn a lot as, thanks

[@mrmcafeeboat2887]

I love your hand writing sir

[@gacherumburu9958]

Thanks for the info!

[@s07StickEmpires]

What's crazy is I have the exact same brand of that motor. I purchased it and assumed it was for 60hz, (I live in a 60hz country) but when it arrived I found out it was for 50hz. It's still really useful to learn from it.

[@AlexanderBurgers]

sometimes they're rated for both, it'll just spin 20% faster on 60 hz

[@krukhlis]

90% it will work just fine, maybe RPM will be a little bit different. That's the benefit of Async motors.

[@oniruddhoalam2039]

Please make a full video about distortion power factor. PLEEEEEAAAAASE

[@johnpekkala6941]

Most machines at my work use these motors so very familiar with them. Very reliable and also very quiet operation. In a not so quiet environment though as what we do: grinding and sawing metal is by itself a very loud buisness. Everything we do is not deafening loud though so that most of our machines by themelf like the drill press are not very loud is a good thing and also . these things last forever. The drill press is from around the 60s i think and stll runs as new. Thats reliability!

[@scientistBENIELSLAB]

This very useful and great work Love form india

[@david54780]

good explanation for someone who already knows a thing or two about motors, but not for beginners. without understanding inductivity and lenz's law any explanation of induction motor still won't make sense.. but good video, thumbs up

[@adityapalsingh7701]

when i was 14 i knew how they worked and i am 16 now but still i enjoyed clarifying more stuff get to know more i liked it yeah nice job your fan from 2014

[@MCsCreations]

Pretty interesting! 😃 I need to get a motor like that! 😬 Stay safe there! 🖖😊

[@arise_mlbb]

Hey Scotty, I didn't see any squirrel in the cage. LOL🤣

[@johannes9386]

Hello 🖐️I love your Stabilo Art 😍

[@greatscottlab]

Thank you so much 😀

[@javoobal]

Excellent video as usual, could you do one about soft starters and stop methods for a single phase induction motor ? i have noticed that a "soft stop" feature it's not easy to find on comercial soft starters for 1HP motors and i wanted to use one in my pump so it stops banging the pipes when it turns off.

[@AmplifierWorld]

Thanks for bringing this subject to your video, actually I was working with ac synchronous motor since 15 years and variable frequency drive. but I want to make own variable frequency drive, if you can help us please make a video, how to make variable frequency drive for motor, using Mosfet or igbt

[@abdul.rahim.k]

How does an induction motor Start? "Broom brom broooomm" Those who've seen the movie will understand 😂

[@boombox8675]

just don't pee on my porch next time and i'll show you how a motor works

[@Team98]

Damn it. Beat me to it.

[@muzakkifuad]

up down up down up down

[@omsingharjit]

Electro boom

[@alternateracoon4872]

Ye college nahi factory hai

[@fernandocaballero5102]

it would be interesting to see projects with induction motors :$

[@maximilianogimenez2395]

Segui asi muy buenos videos! Saludos

[@cwbh10]

Fascinating! Perhaps you could also build a three phase inverter to drive them as well? That way you could also vary the frequency more easily too? I think this is how electric cars do it currently

[@damiendalla-rosa2636]

That would be great!

[@ajaykalsi6007]

How tf is your comment 1 week ago

[@samuelhulme8347]

Ajay Kalsi KZbin is drunk again !

[@viveksihol9061]

Bro thnx for revising my electrical engineering basics

[@TotallyNotJason101]

Its worth to sleeping late and waiting your video to be uploaded:>

[@greatscottlab]

Hope you enjoyed it!

[@tvishmaychoudhary69]

Awesome as always

[@greatscottlab]

Thank you! Cheers!

[@tvishmaychoudhary69]

Thanks!

[@tvishmaychoudhary69]

mmm... Can u make a high voltage dc supply I want to make a sgtc

[@zanpekosak2383]

We have a 7.5kW motor to run our hay blower...that is a beast. We use a tractor to move it as its close to 100kg.

[@johnmiller8884]

I wish the US had a standard 3 phase supply. We get a single phase for residential and most commercial. My work somehow pulled off a three phase connection and we saved a huge amount on our heating and AC by switching to a true 3 phase blower.

[@parthbhardwaj4279]

Your video is very interested and informative

[@greatscottlab]

Glad you think so!

[@catchmypoint6756]

Useful for EEE Thank you

[@karlasvalina5772]

Great video

[@padmabhushanb3660]

Hi Scot, The video is excellent. Kindly make an video on speed control 3 phase induction motor using arduino and mosfet switching.

[@stephenthompson5238]

I was just searching for this

[@JohnEnergy2012]

Actually learned something!

[@MultiSigen]

Love your videos man! Could you plz do a DFIG please! There is very few videos online and don’t explain very well.

[@crappymachines7567]

Is there a way to wire up a bldc motor to an vfc if the voltage "could" be reduced or current be limited so the motor wouldnt draw too much power and smoke up?

[@noweare1]

Motors have always been like magic to me.

[@boharihamen]

Thanks for this video. It is very educational, but i dun really understand all that is presented here.

[@someguynamedpie]

You should do a video on VFDs and the magic that they can do w/ such a motor.

[@ilhamanwar8784]

For the next topic it might be interesting to discuss about soft starter

[@duonghoang191]

hey GreatScott how to make over discharge protection

[@sparkyprojects]

I've often wondered if a BLDC driver would run a 3 phase induction motor

[@gajananddave3385]

I think it depends on the values I know about BLDC driver higher Frequency so coil design for it.

[@tishantdas8125]

The Induction motor needs 120° phase shift between the phases so if the driver can be programmed in this configuration then it will

[@sparkyprojects]

A BLDC motor is basically a 3 phase motor, but uses a magnetic rotor, so i wasn't sure if it would work, but with the slip as scott describes, and would be 120° An induction motor will run on higher frequencies, maybe up to 400Hz where the iron core would start to saturate.

[@thomasb4422]

Technically yes (almost what a VFD does). Practically BLDC drivers check the back EMF from a synchronous motor to know which phase to use. This likely won't work with an induction motor and it won't start up

[@miedziok9411]

@@combinacijus if you have 3 phases and perma magnet inside you have synchronous motor (the more complex and powerful ones uses electromagnets)

[@Richie_]

I've used lots of those motors on Wirth et Gruffat rotary machines.

[@malgailany]

Induction motors are cool. I was expecting to see what conditions are suitable for the DELTA/STAR configurations. Nice video, thanks.

[@siebepauwels1322]

Delta is for 230 and star is for 400, delta uses less current. This is why star-delta exists, biger motors have a too big current for the net so you start the motor in delta (current=less, speed and power=less) and then you switch it (automaticly) over to star for better speed and power

[@amaanqureshi1286]

Hi! Love your videos!!

[@greatscottlab]

Glad you like them!

[@amaanqureshi1286]

@@greatscottlab awesome! Thanks for replying

[@mehedyamin]

A follow-up on motor starters/soft starters would be great.

[@EkelundDK]

This takes me back to electrician class, where we had to do asynchronous motor theory for a whole day. It was pretty exciting, and very useful during my apprenticeship at a factory. How would you feel about doing a video, on how to utilise a washing machine motor, similar to this video? I have one at home, and I can't figure out what to use it for, other than some kind of generator, like a solar panel, but I am completely lost in how to hook it up.

[@AbirsCornerdood]

Really helpful

[@panicboys8001]

hi greatscout i have a question how do a strip a flat wire or is there equipment use to strip that wire? thanks in advance

[@rodionsabbath9722]

Great video. Next question is how can I control the speed of one of those?

[@TheDenix8]

Would love to see a video explaining how to make a variable frequency controller for these motors :D

[@emanuelgoncalvessantos4499]

Up