Here is the comment he mentions at 8:48: The currents flowing in the squirrel cage consist of a basic frequency and multiples of that same frequency (harmonics). Whilst the basic frequency current creates the torque, the harmonics produce various negative effects like Vibrations, a ripple in the motor torque and problems when starting the motor. To reduce the harmonics a special winding technique for the motor coils is used. By angling the rods the effects of the remaining harmonics are further reduced. The exact angle needed to reduce the relevant harmonics depends on the number of slots and their spacing.
8:40 That is called "skew angle", it helps to have a smooth interaction between the stator conductors (in straight slots) and the bars of the squirrel cage, thus avoiding torque pulsations
Well said. Just for a novice like me, I compare this to a common skew gear, where smooth transitioning of acceleration and deceleration happens (Torque readily engaged with no catchup.)
nope, the main purpose of skew is to avoid magnetic locking, the torque pulsations happen only during the start and does not affect the steady state running conditions, therefore skew is used to avoid magnetic locking and avoiding torque pulsations are just added bonus
@@lucassol7418You know. Learning while having fun is the best thing you can have. Obviously not a circus but some fun in class can really get an impulse on learning
@@Yo_ChiabI used to have a teacher say “I can’t do a song and dance for every lesson” but that always felt like another way of saying “I don’t have the resources or support to make learning fun. Blame capitalism.”
I’m currently going through electrical trade theory classes for my apprenticeship and have aspirations to eventually become an electrical engineers . I have to say , your videos help me understand theory basics much more than my classes ever could . Thank you so much
it's because this channel has also educational purpose, it shows youngsters that you can make something, working prototype with cheap crap not "expensive 3d printer"
The slots at an angle is called skewing the poles. It reduces bemf on the supply, but only implemented on large industrial motors. For something small, you'd want to to keep the slots straight to increase the bemf, ergo higher torque output for small motors. But this also brings additional problems like a jittery motor because the torque is so... uh "harsh"
Do you remember record players from the 40's - 80'? Do you recall any "wow and flutter" while the record played? Yeah, neither do I. Those were driven by little shaded-pole single phase induction motors ..
Lmao, government electricians in my city leaves disconnected and broken wires(naked of course) hanging 5 feet above the ground just to give fking heart attack to the people walking in nights. Went straight into the drain with my bike when that wire hit my face.
8:45 my college says they're at at angle so that the bars can never be completely aligned with the magnets. When they're slanted, they're constantly out of allignment which promotes motion
8:44 I'll take a crack at this one. 1. The skew in squirrel cage was originally designed to help with starting of the induction motor when the number of rotor and stator poles was the same. 2. The skew is typically about one stator slot width angled distance from the bottom to the top (axially directed). Because the induction motor is asynchronous, it requires that the rotor magnetic field by out of synch (have a non-zero slip speed) with the stator magnetic field as it rotates around the stator. 3. This ensures that a torque is maintained between the rotor and the stator. The skewing ensures that rotor and stator poles never reach a locked or synchronous position with no torque - this condition can be one type of cogging (locking) of the rotor. 4. The rotor may slip in and out of this no torque position depending on loading characteristics as it rotates. Where the number of stator and rotor poles are not the same such starting torque isn't necessary. 5. But even in this scenario there may be cases where particular poles in the stator and rotor can align such that the fields are synchronous (i.e. no torque) the result is to produce torque ripple (i.e. variations in rotational force). 6. The torque ripple causes variations in the speed as the rotor is rotating. The rotor skewing couples (the flux from) neighbouring stator poles through the skew and ensures that the rotor continues to experience torque even if part of it is aligned synchronously (no torque) with the rotating field at one particular stator pole. 7. The ripple can also lead to injections of higher frequency harmonics as a result of the variably changing relative angle between the rotor pole and the stator pole fields. This then induces current in the stator field lines and injects it back. Potentially this can cause heating losses in the windings and increased noise of operation in the motor in addition to variations in rotor speed as it turns.
The slots are kept at an angle to prevent magnetic locking/cogging, in which the rotor's and stator's magnetic fields align each other, therby being locked!!
8:45 They slant them at an angle to reduce torque ripples. My lecture said “The slants are to reduce torque ripples, I’m not even going to get into it, if you take EEE367 next year we’ll cover it in more detail” I’m definitely not taking EEE367 next year, so I guess I’ll never know
Awesome video. We built an induction motor once in Uni. We realized that the -in this case- nails need to be isolated between one another and shorted only at the sides to increase the torque
They teach you synchronous and induction machines in electromagnetics in school ?! Bro ,which country you belong to? In India ,I remember we were taught about toroid ,solenoid and basics of DC/AC motor only in school. I bet you are from Germany or Russia 😂
@Baba Yaga Like with the hacksaw at 5:49? Even the most intelligent idiot has accidents. Colinfurze once burnt his arm and many times got small injuries - he will once cut off his finger...
Copper pipe is easy to cut, you just need the right tool. The right tool incidentally looks something like if you chopped off a robot’s half-closed fist and crossed it with a vice grip. You clamp it onto the pipe, and spin it round and round, occasionally tightening it. Inside is a cutting wheel that slowly pierces the copper. This actually takes less than 30 seconds.
8:40 : in short , you keep them straight the motor goes mad , you keep it at some angle , the motor goes less mad keep them straight and harmonics are produced, as the flux from the winding will interact with each other and produced some unwanted waves / signals - we call them harmonics. harmonics: unwanted disturbance, the lower harmonics have higher magnitude so we just try to eleminate those by keeping it at some angle . some harmonics forces the motor to move forward and some forces it to move backward . attention the torque produced by harmonics is different than the resultant torque of the ac motor(the torque we use) , so harmonics create disturbance in torque and thus it will cause it to have faults like , locking(no starting), cogging(operating at a slower speed), or even hunting (oscillate)(only for synchronous motor)
Your channel provides rock solid education, sound theory of electrical principles .. and damn you are a very funny guy! That's what really entices people to learn! Congrats!
This is really off topic, but I want to thank you for all the content you put out and I really love how you combine humor with information. I started my study electrical engineering this year and I came in contact with the Keysight IoT challenge because of you. I had a lot of fun working on it and I learned a lot. So I want to thank you for all the effort you put in creating content and creating such a nice and informative platform ❤️
I saw your comment and thought that was a really nice sound too. I was bored and decided to grant your wish. I ran it through Audacity and this is the best I could do. If you don't want that noise at the end, I can remove that too. drive.google.com/file/d/1xM523p0gS6i_AO_rMBMZor7bEsjKgdNP/view?usp=sharing
You could use a small VFD (variable frequency drive). They can be powered by 120vac but still output 3 phase AC at high current with variable output frequencies.
Not small ones...well, no worse than a bigger R/C plane BLDC controller. Check them out on Ebay. Bigger ones, you're right...I made my own for my big 3ph lathe with thyratrons.
Don't forget that true three phase AC is sinusoidal, but VFDs tend to output a high frequency PWM square wave as they usually run off a hefty DC bus internally. They just switch the DC on and off very quickly so it kinda sorta looks like AC. This is why you can get them relatively cheaply (under US$50 from China), because there's no fancy sine wave output.
@@Berkeloid0 while this creates a slightly worse rotating field, the inductance of the motor coils should actually smoothe the current to look like a somewhat sinusodial. its probably his best bet, seeing as its almost the same curcuit thats used to power induction motors industrially.
@@daavi3210 Definitely. But VFD output can only be used by devices like inductors that act somewhat like low-pass filters. There is some confusion around by people who think VFDs can be used as cheap three-phase inverters to run any type of three-phase load from a single phase supply, which may not always work depending on what the load is.
Flux density is not exactly sinusoidal in the air gap.This induce harmonic currents in rotor,especially fith harmonic torque which is opposite to the direction of rotation of motor.Rotor bars are skewed to reduce cogging during start and reduce slot harmonics.
8:44 I'll take a crack at this one. 1. The skew in squirrel cage was originally designed to help with starting of the induction motor when the number of rotor and stator poles was the same. 2. The skew is typically about one stator slot width angled distance from the bottom to the top (axially directed). Because the induction motor is asynchronous, it requires that the rotor magnetic field by out of synch (have a non-zero slip speed) with the stator magnetic field as it rotates around the stator. 3. This ensures that a torque is maintained between the rotor and the stator. The skewing ensures that rotor and stator poles never reach a locked or synchronous position with no torque - this condition can be one type of cogging (locking) of the rotor. 4. The rotor may slip in and out of this no torque position depending on loading characteristics as it rotates. Where the number of stator and rotor poles are not the same such starting torque isn't necessary. 5. But even in this scenario there may be cases where particular poles in the stator and rotor can align such that the fields are synchronous (i.e. no torque) the result is to produce torque ripple (i.e. variations in rotational force). 6. The torque ripple causes variations in the speed as the rotor is rotating. The rotor skewing couples (the flux from) neighbouring stator poles through the skew and ensures that the rotor continues to experience torque even if part of it is aligned synchronously (no torque) with the rotating field at one particular stator pole. 7. The ripple can also lead to injections of higher frequency harmonics as a result of the variably changing relative angle between the rotor pole and the stator pole fields. This then induces current in the stator field lines and injects it back. Potentially this can cause heating losses in the windings and increased noise of operation in the motor in addition to variations in rotor speed as it turns.
Hi. Hope you read this. Iv been very depressed lately, yet make other people laugh ". But alone at home I'm miserable". Iv found your videos, and you are the only person who cheered me up iv cried laughing at your antics lol I understand everything as I'm a retired electronics engineer, please keep these coming it's so funny lol 😂😂. You should be on international TV brilliant. Well done. And thank you
@@DeepakChauhan-mj2wt thanks brother for correcting me , but that grammatical error dosent matter . All the thing which matters is his disrespect against an Indian 👍👍👍
6:49 Finally got an alarm ringtone to wake me up XD
It's so terrifying, you can wake up literally everything with that ringtone
Lmao
its art
Yello - Oh Yeah You guys are welcome
I feel like there should be an explosion at the end.
0:11 Lose wires. Avoid them
4:08 Remix time
6:49 ElectroBOOM Ringtone
I actually jumped with shock at 11 seconds...
Ringtone is on repeat and I am vibing.
In 0:11 i laughed really hard with his scream...
do any of you remember where the ringtone is from?
the first video of it
0.11 that scream XD
Here is the comment he mentions at 8:48:
The currents flowing in the squirrel cage consist of a basic frequency and multiples of that same frequency (harmonics). Whilst the basic frequency current creates the torque, the harmonics produce various negative effects like Vibrations, a ripple in the motor torque and problems when starting the motor. To reduce the harmonics a special winding technique for the motor coils is used.
By angling the rods the effects of the remaining harmonics are further reduced.
The exact angle needed to reduce the relevant harmonics depends on the number of slots and their spacing.
You mean angling the slots acts kind of like a low-pass filter?
But why does it reduces harmonics?
I meant how
Thought it was to reduce effect on torque of the remanant magnetic field of the rotor
@@commandroid9336 Guessing because it spreads the force over a wider area that also then overlaps with other slots
8:40 That is called "skew angle", it helps to have a smooth interaction between the stator conductors (in straight slots) and the bars of the squirrel cage, thus avoiding torque pulsations
Well said. Just for a novice like me, I compare this to a common skew gear, where smooth transitioning of acceleration and deceleration happens (Torque readily engaged with no catchup.)
@francisco de los santos arana , esta claro que hablas español
@@badblenderanimations1449 más claro que el agua ;)
@@pkraj Does it have mustard at least? 👀😅
nope, the main purpose of skew is to avoid magnetic locking, the torque pulsations happen only during the start and does not affect the steady state running conditions, therefore skew is used to avoid magnetic locking and avoiding torque pulsations are just added bonus
5:49 finger removal tutorial
5:55 is the thumb removal tutorial
Assassins wants to know your location
Yep that made me cringe. I have seen people who sliced halfway through their fingers when they were using a hacksaw incorrectly
Lol, shouted at my Laptop "Noooooooooo" jeez that made me cringe. Genius or mad man, I'm never too sure.
That freaked me out.
"Loose wires, avoid them." I need that on a t-shirt.
If that was made into a warning label on a shirt I would buy it in a heartbeat.
Same
With him beign shocked
Except that the t-shirt would have a colon (:) instead of a comma (,).
If Tony Stark had mehdi in his cave both would be dead
Great comment, my friend! LMAO
LMAO
Thus, it would mean Thanos would be victorious.
I got you to 111 likes
You are welcome
😂😂😂😂😂😂😂
Respect to all the discoverers and engineers who make these things work in our daily lives...
Praise them saint of Mechanicus
The names of these geniuses are electrical physicists
The rotor bars are skewed at an angle because -
1)to prevent magnetic interlocking between stator and rotor
2)to reduce harmonics in the torque
so basically magnetodynamics? (aeroodynamics for the magnetic field, not for air)
@@aron9forever yes, electromagnetic factors are the major consideration for that
Well guess who is going to learn magnetodynamics eventually through internet (me)..
i got lost at "magnetic interlocking"
Yes those are meant to cogging and crawling in Induction Motors
4:08 everybody gangsta untill the bldc motor starts flying
And shredding everybody's face
And attempts to pick that up again around 6:48 lol 🤣
Check racing drones accident for more xd. Imagine 4 of em flying at you 60+mph lol....not that i done it myself...
I didn't know there was an abbreviation for Blind [deaf and dumb] direct current motors.
4:06
Every time when Mehdi is holding loose wires I know he must shock himself
it's one of the laws of physics.
Every time I see him holding loose wires, I take off my headphones.
i jumped SO frigging hard in the beginning of the video that I literally fell out of my chair.
I was wearing headphones.
I guess you could say that it didn't "shock" you (;
Crxwz because it shocked HIM lol
0:10 a scream of a true man
I was just waiting for the shock when He started waving the cables around
That piano background music by his daughter ElectroCUTE is awesome
I agree
What song is that
Kaizer Patricio Oops I also don’t know
@@GavinLiuranium Maybe its original?
gabsr Yeah could be
6:47 this is how true engineers reveal everything...
How does a mosquito vaporiser works?
ua-cam.com/video/5wOfRestJOA/v-deo.html
Why tho i dont want to know how a mosquito VAPORISER works
Just a video is you guys want to see just see bro.
Nothing else I've just started cause you guys interested in electrical
7:31 is how the engineers reveal troubleshooting problems.
6:46 when i finish my homework
So true
@@darkestone763 i agree
Yes
I agree
"Im going to americaaaaa"
This guy is awesome ! He would make a GREAT teacher for an electronics class at a community college , seriously
Ds this days dont wants to learn, they want circus show
@@lucassol7418You know. Learning while having fun is the best thing you can have. Obviously not a circus but some fun in class can really get an impulse on learning
@@Yo_ChiabI used to have a teacher say “I can’t do a song and dance for every lesson” but that always felt like another way of saying “I don’t have the resources or support to make learning fun. Blame capitalism.”
It's finished !!
Bam bam chika chika phi phi fakham fakham blurrr blurrr
😂😂😂
Even if Ac Motor doesn't work
Tesla surely will be proud of presentation
Thanks , i was searching for the lyrics everywhere xD
i still get surprised every time he gets attacked by his experiments.
I respect this guy a lot
He is quite entertaining and fun
For me he is Pro teacher with actual practical doing in his video
6:49 NOW THAT is dubstep, Love you so much dude xD
Lol
The reaction at 10:10 is probably the same that Faraday had when he made his crude version of an electric motor.
Keep up the good work.
Gordon Freeman watches ElectroBOOM, based
4:08 literally rise of the machines🤣
Jajajja XD
0:11 how i react to my test result
😂
This is gold 😂👌
😅 😅 😅 😅
Plot twist: it was a pregnancy test
11 seconds in and you found a really good joke. Props to you my dude
4:07
He turns it on and it went straight at him
I’m dead XD
Detroit become human
cory complex
GASP
Deviant RC helicopter motor
@cory complex lol
Detroit:Become humans
I'm not sure this is your jurisdiction, but could you do a video on the photoelectric effect? Many thanks, and love your videos.
hmm.. BS Physics. yummm
he might, and he can.
It might be a nice project to drive vacuum tube photocell/photomultiplier, they aren't that expensive (ones coming from old movie projectors) :)
@@elephant3109 how is it BS? The photoelectric effect is what makes solar panels work.
@@Super1337357 bruh lol
mr1337357 Bachelor of Science
How does this guy still have 10 fingers
¯\_(ツ)_/¯
Because he knows exactly what he's doing. My question is how does this guy not still have 10 figures?
9:58 "Tesla would be somewhat proud" Favorite line in this awesome, hilarious, informative video!
I'm curious how Tesla even invented it?
@@bunnygirl8482 Tesla invented 2-phase (polyphase) motors. Mikhail Dolivo-Dobrovsky invented true three-phase motors
I chortled!
I’m currently going through electrical trade theory classes for my apprenticeship and have aspirations to eventually become an electrical engineers . I have to say , your videos help me understand theory basics much more than my classes ever could . Thank you so much
This video proves free positive energy.
Because you always make my day.
I love this guy! He always impresses me with his engineering skills.
>has expensive 3d printer
>uses cd case
Mehdi stop
Hmmmm...... Did you ever think because he wanted something transparent
That way he can see the magnetic fields, right
Also: TRANSPARENT PRINTS
Also time
it's because this channel has also educational purpose, it shows youngsters that you can make something, working prototype with cheap crap not "expensive 3d printer"
staweks true. But he uses a 3d printed support for the bldc motors
Also there are very cheap printers in comparison to the lulzbot
CRH: Safety is number one priority.
Electroboom: 5:49 f**k that.
ElectroBoom has his own rules:
Safety is my Item Number 2, the first one is FUN *2 thumbs up*
ua-cam.com/video/D5vVmwsLtCo/v-deo.html&t=178
@@BadMax02_VR So true man😂
@@BadMax02_VR What thumbs?
@@Markle2k look at the video link he puts up two thumbs after he said that sentence
@@BadMax02_VR Not relevant.
4:06 is how we invented drones
True
when you need to get to your victims because they didn't do their Spanish (joke on duo lingo bird icon)
How Mehdi still has all his fingers is a mystery. He is so brilliant, but the way he cuts things makes me so nervous! 5:38 get this man a vice!!!
5:47
Yeah, i would hate to watch him chop an onion. 😰
I know right? I was waiting for him to say something about that, especially with the jigsaw 😳
4:06 I would be a liar if I told you I never did that. I still have a scar on my neck. Remove the propeller before testing your motors guys!
Or glue it to some heavy plank or something
No!
Yes
if you still have your fingers thats good
No elctroboom video is complete whithout him electrocuting himself in the first twenty seconds
Electrocuting means to shock to death. Since he's still alive, I'm thinking he's never electrocuted himself.
I think that was one of the few times he did it by accident. I mean, listen to that scream! Lol
Loading findargument.EXE
.
.
.
.
... Error argument not found
@@evilkillerwhale7078 your joking right? HE EXPLAINED ELECTRICITY CANT KILL YOU THAT EASILY
4:08
Nobody:
Rotor: FOOL, you’ve brought me into this world and let me free. Now you shall perish
Lol
LMAO😂😂
The slots at an angle is called skewing the poles. It reduces bemf on the supply, but only implemented on large industrial motors. For something small, you'd want to to keep the slots straight to increase the bemf, ergo higher torque output for small motors. But this also brings additional problems like a jittery motor because the torque is so... uh "harsh"
8:41 Slots are in angled due to avoid cogging which is nothing but the slots of the rotor gets magnetic locked with stator slots... :)
I was browsing comments for this
Cogging In a shaded-pole single-phase induction motor?
Shirley, you jest. These things slip like crazy. Little chance of cogging.
Also to reduce torque fluctuations(?)
Do you remember record players from the 40's - 80'? Do you recall any "wow and flutter" while the record played? Yeah, neither do I.
Those were driven by little shaded-pole single phase induction motors ..
It's called skewing
6:49 Me when I tried to beatbox at my school's talent show
You know you learned a lot from Electro BOOM when loose wires give you intense anxiety.
Relatable
Damn true
Lmao, government electricians in my city leaves disconnected and broken wires(naked of course) hanging 5 feet above the ground just to give fking heart attack to the people walking in nights.
Went straight into the drain with my bike when that wire hit my face.
Yeah.... I knew he was gonna do it
8:45 my college says they're at at angle so that the bars can never be completely aligned with the magnets. When they're slanted, they're constantly out of allignment which promotes motion
Correct, it is to prevent ‘cogging’ which is magnetic locking
8:42 "I don't know why they do them at an angle but I'm sure it has something to do with something you can find in the comments down below."
lmao
I cracked up at the subtlety lmao
So much UA-cam comment awareness
8:44 I'll take a crack at this one.
1. The skew in squirrel cage was originally designed to help with starting of the induction motor when the number of rotor and stator poles was the same.
2. The skew is typically about one stator slot width angled distance from the bottom to the top (axially directed). Because the induction motor is asynchronous, it requires that the rotor magnetic field by out of synch (have a non-zero slip speed) with the stator magnetic field as it rotates around the stator.
3. This ensures that a torque is maintained between the rotor and the stator. The skewing ensures that rotor and stator poles never reach a locked or synchronous position with no torque - this condition can be one type of cogging (locking) of the rotor.
4. The rotor may slip in and out of this no torque position depending on loading characteristics as it rotates. Where the number of stator and rotor poles are not the same such starting torque isn't necessary.
5. But even in this scenario there may be cases where particular poles in the stator and rotor can align such that the fields are synchronous (i.e. no torque) the result is to produce torque ripple (i.e. variations in rotational force).
6. The torque ripple causes variations in the speed as the rotor is rotating. The rotor skewing couples (the flux from) neighbouring stator poles through the skew and ensures that the rotor continues to experience torque even if part of it is aligned synchronously (no torque) with the rotating field at one particular stator pole.
7. The ripple can also lead to injections of higher frequency harmonics as a result of the variably changing relative angle between the rotor pole and the stator pole fields. This then induces current in the stator field lines and injects it back. Potentially this can cause heating losses in the windings and increased noise of operation in the motor in addition to variations in rotor speed as it turns.
Main reason for the skewing is eliminate harmonics.
The slots are kept at an angle to prevent magnetic locking/cogging, in which the rotor's and stator's magnetic fields align each other, therby being locked!!
8:45 They slant them at an angle to reduce torque ripples. My lecture said “The slants are to reduce torque ripples, I’m not even going to get into it, if you take EEE367 next year we’ll cover it in more detail” I’m definitely not taking EEE367 next year, so I guess I’ll never know
I asked my prof about it and he said it reduces higher frequency harmonics in the eddy current which probably leads to reduced torque ripple
What school do you go to?
It also there to avoid cogging torque.
0:21 - the guy from Primitive technology!
I scrolled looking for this comment. Great channel!
Awesome video. We built an induction motor once in Uni. We realized that the -in this case- nails need to be isolated between one another and shorted only at the sides to increase the torque
It took you exactly 11sec to shock yourself,love ya for that man
Is this real or just an effect? 🤔 i really can't tell, looks so real
@@oSJmee
It is real. It's just he do them on purpose as he knows what will kill him and what will ALMOST kill him.
damn, 11 is my favorite number! Im proud of him.
Come for the educational commentary
Stayed for the swearing and self electrocution
0:10 Right?
This video actually helped me understand my Electromagnetism unit I’m doing in Physics for school. Thanks!!!
They teach you synchronous and induction machines in electromagnetics in school ?! Bro ,which country you belong to? In India ,I remember we were taught about toroid ,solenoid and basics of DC/AC motor only in school. I bet you are from Germany or Russia 😂
@@pritsingh9766 Australia actually, and you commented WAY after my exams
5:33 I laughed way too much at this
The day he didnt uploads anymore we know what happened...
pls no
R.i.p
I know that was a joke
@Baba Yaga Like with the hacksaw at 5:49? Even the most intelligent idiot has accidents.
Colinfurze once burnt his arm and many times got small injuries - he will once cut off his finger...
He shd be dead by now
0:11 i started laughing till death
Loose Wires
Avoid Them
It scared the shit out of me
YES finally an explanation of AC motors, thank you Mehdi!
why u use upside down i????
@@RetroPizzaFan thats called an exclamation point. It is used to emphasize energy in a sentence.
The post apocalyptic inventor channel has a lot of different motors used and explained, I recommend watching a few.
@@Divert486 r/woooosh
@@RetroPizzaFan pretending not to understand english punctuation is a joke now... Fuck back off to reddit you lil nerd.
Copper pipe is easy to cut, you just need the right tool. The right tool incidentally looks something like if you chopped off a robot’s half-closed fist and crossed it with a vice grip. You clamp it onto the pipe, and spin it round and round, occasionally tightening it. Inside is a cutting wheel that slowly pierces the copper. This actually takes less than 30 seconds.
I found one of them on the road, but on our farm we had a massive one to cut up to 2inch steel pipe 😮😅
Nikola Tesla: *Sees the title.*
*Nikola Tesla wants to know your location.*
Accept
No he don't....... Not a good joke bro.... Try harder
@@bhargavdeka5378 try harder at improving your english then come back.
Elon Tesla already have his location.
Nikola Tesla wants to make you a REAL AC motor
"loose wires; avoid them" and I live by that
avoid anything loose in general, girls too...
0:11 sounds like me when i see a spider.
Grow a pair
24ecko calm down buddy
Correct
So the spider explodes I would be scared too
did you know he actually got zapped before the boom and thats why he jumped slighty before
8:40 : in short , you keep them straight the motor goes mad , you keep it at some angle , the motor goes less mad
keep them straight and harmonics are produced, as the flux from the winding will interact with each other and produced some unwanted waves / signals - we call them harmonics.
harmonics: unwanted disturbance, the lower harmonics have higher magnitude so we just try to eleminate those by keeping it at some angle .
some harmonics forces the motor to move forward and some forces it to move backward . attention the torque produced by harmonics is different than the resultant torque of the ac motor(the torque we use) , so harmonics create disturbance in torque and thus it will cause it to have faults like , locking(no starting), cogging(operating at a slower speed), or even hunting (oscillate)(only for synchronous motor)
Cheers 😅
4:07 almost needed a lot of stitches with that one. those tiny motors are no joke
You did it 3 days ago?
Sliced open my wrist
@@sujyotsharma4335 Whoaaaaaaa?
3 Days ago 🤔🤔🤔🤔
Can your power be learnt?
4:25 "Made in Canada. Really"
LMAO!!
You gay ?
@@BOT-fl3xh stfu homophobe
Lol
I love how he puts primitive technology in there lol.
Great video! Always learning something new and
making me laugh :)
Ancient Aliens 😎
ECU's are called ESC's (electronic speed controller) when attached to motors like that for hobby aircraft
0:06-0:14 I saw that coming
6:49 *Best Music Ever!!!*
5:26 Him trying to cut this piece of copper pipe killed me LOL
I am so obsessed with these videos of ElectroBOOM that I watch the entire sponsorships, lol
9:46 that's the reaction they made when they discovered ac motors. for sure.
the angle is to prevent cogging(which is locking of rotor which prevents it to startup) also to reduce humming noises
The patience level you have will be a benchmark test for other youtubers....
Nivin pauly ividem undo
0:10 that scared me
Your channel provides rock solid education, sound theory of electrical principles .. and damn you are a very funny guy! That's what really entices people to learn! Congrats!
4:07
That Motor went right after that glorious unibrow.
Protect the unibrow!
This is really off topic, but I want to thank you for all the content you put out and I really love how you combine humor with information. I started my study electrical engineering this year and I came in contact with the Keysight IoT challenge because of you. I had a lot of fun working on it and I learned a lot. So I want to thank you for all the effort you put in creating content and creating such a nice and informative platform ❤️
Electroboom: ECU
All the RC plane builders turning in coffins: ESC! (electronic speed controller)
skewing is done to
1. reduce harmonics
2. To prevent cogging , a conditioned in which the induction motor wouldn't start rotating.
This should have been pinned
12:41 AM ( Still Awake )
UA-cam: ElectroBOOM has upload..
Me: **PLAY PLAY PLAY**
@Kitsùne bruh I'm in 4.30am
2:05 Am meeeeeee
7:05 It sounds like a air raid siren from WWII
0:11 He got shocked so did I.🤣
6:33 That is such a good sound, wish I could get a sample of that without the background music
I saw your comment and thought that was a really nice sound too. I was bored and decided to grant your wish. I ran it through Audacity and this is the best I could do. If you don't want that noise at the end, I can remove that too.
drive.google.com/file/d/1xM523p0gS6i_AO_rMBMZor7bEsjKgdNP/view?usp=sharing
IT: “try turning it on and off again” Electro: “hold my rectifier”
You could use a small VFD (variable frequency drive). They can be powered by 120vac but still output 3 phase AC at high current with variable output frequencies.
Aren't they pretty expensive?
Not small ones...well, no worse than a bigger R/C plane BLDC controller.
Check them out on Ebay. Bigger ones, you're right...I made my own for my big 3ph lathe with thyratrons.
Don't forget that true three phase AC is sinusoidal, but VFDs tend to output a high frequency PWM square wave as they usually run off a hefty DC bus internally. They just switch the DC on and off very quickly so it kinda sorta looks like AC. This is why you can get them relatively cheaply (under US$50 from China), because there's no fancy sine wave output.
@@Berkeloid0 while this creates a slightly worse rotating field, the inductance of the motor coils should actually smoothe the current to look like a somewhat sinusodial. its probably his best bet, seeing as its almost the same curcuit thats used to power induction motors industrially.
@@daavi3210 Definitely. But VFD output can only be used by devices like inductors that act somewhat like low-pass filters. There is some confusion around by people who think VFDs can be used as cheap three-phase inverters to run any type of three-phase load from a single phase supply, which may not always work depending on what the load is.
"Thats why this Video is sponsored by"
Me thinking: "Skillshare"
"CuriosityStream"
Me: "Wait what!!!"
New to the channel?
@@Random-ne7uv noup watching since like 3 years
@@jksr127 oh
Flux density is not exactly sinusoidal in the air gap.This induce harmonic currents in rotor,especially fith harmonic torque which is opposite to the direction of rotation of motor.Rotor bars are skewed to reduce cogging during start and reduce slot harmonics.
ravi tej can you say that in English?
8:44 I'll take a crack at this one.
1. The skew in squirrel cage was originally designed to help with starting of the induction motor when the number of rotor and stator poles was the same.
2. The skew is typically about one stator slot width angled distance from the bottom to the top (axially directed). Because the induction motor is asynchronous, it requires that the rotor magnetic field by out of synch (have a non-zero slip speed) with the stator magnetic field as it rotates around the stator.
3. This ensures that a torque is maintained between the rotor and the stator. The skewing ensures that rotor and stator poles never reach a locked or synchronous position with no torque - this condition can be one type of cogging (locking) of the rotor.
4. The rotor may slip in and out of this no torque position depending on loading characteristics as it rotates. Where the number of stator and rotor poles are not the same such starting torque isn't necessary.
5. But even in this scenario there may be cases where particular poles in the stator and rotor can align such that the fields are synchronous (i.e. no torque) the result is to produce torque ripple (i.e. variations in rotational force).
6. The torque ripple causes variations in the speed as the rotor is rotating. The rotor skewing couples (the flux from) neighbouring stator poles through the skew and ensures that the rotor continues to experience torque even if part of it is aligned synchronously (no torque) with the rotating field at one particular stator pole.
7. The ripple can also lead to injections of higher frequency harmonics as a result of the variably changing relative angle between the rotor pole and the stator pole fields. This then induces current in the stator field lines and injects it back. Potentially this can cause heating losses in the windings and increased noise of operation in the motor in addition to variations in rotor speed as it turns.
This guy really did a long comment well done😮
6:46 when i'm going out of the exam hall
0:12
"Loose wires, avoid them"
Why is that so funny😂😂
Excellent video as always. Any ideas for what's next?
Are you time traveler ??😀😀
@@pawankhanal8472 patreons
@@beccasmarshall8 ohh
"Loose wires, avoid them"
-Electroboom guy
6:49 i want this as my ringtone. surely im not the only one!
Reeve Kook I know right?
Bam bam chick chick Bibi bhakkam bhakkam blllllllllll bam bam kich kich kon kon
7:32 when I tell my sis that the black tablet is in a *loop*
The y-config worked at 9:03 before interrupted. It started moving, albeit possibly vibration, but hey, watch it again.
He survived Thanos's Snap and he survived this video. He is INEVITABLE!! xDD
Matrix reference there!
That's definitely the most accurate representation AC development I've ever seen.
Did he ever do a part 2 for this AC motor?
Great inspirational work. Even though the motor didn't work as desired but I learned a lot from your video.
Someone : we need some explosions.
Electroboom : hold my beer
@Benjamin Joshua Beggs *hold my live wires
ElectroBOOM: Hold this live wire
Very good joke, but he is Muslim, so he does not drink
@@skandarmaliki744 _Hold my coffee_
@@jamescollins6085 funny thing I'm drinking coffee right now... Thanks btw for caring 😊
madlad straigh up used an ac motor to move another ac motor to make the currents for yet another ac motor
Hi. Hope you read this. Iv been very depressed lately, yet make other people laugh ". But alone at home I'm miserable". Iv found your videos, and you are the only person who cheered me up iv cried laughing at your antics lol I understand everything as I'm a retired electronics engineer, please keep these coming it's so funny lol 😂😂. You should be on international TV brilliant. Well done. And thank you
00:10 like how laugh after watching this😁😂😂😁😁
Like how you can't speak proper English
@@jameslaltluangpuia7694 bro it was just a mistake 😅😅😅
at least i can acknowledge that you didn't change ur comment
@@DeepakChauhan-mj2wt thanks brother for correcting me , but that grammatical error dosent matter . All the thing which matters is his disrespect against an Indian 👍👍👍
@@DeepakChauhan-mj2wt I appreciate that brother
One punch man ep 6 is streaming now, but Mehdi senpai first
We weebs now man
8:45 they prevent the rotor conductor by magnetic locking. That's why they done it for certain angle.
was searching for that answer, wasnt disapointed
Real talk, this dude is more educational then any school teacher