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 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.
@@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.
@@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.
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 !
@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....
@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.
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
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.
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!
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.
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 !
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.
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.
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.
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.
3phase induction motors - the black magic of electromechanic engineering. They are great for many reasons, especially for not blowing up if the rotor gets stuck (on pumps or woodchippers, for example). Thank you, Nicola Tesla.
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.
"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.
@@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.
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
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!
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
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.
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.
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.
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
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.
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.
4:58 so in Germany the whole breaker panel is reversed. Input from the bottom output on top. (In Italy output Is on the bottom) Cool. Initially I was like "WTF"!
he is working on a 16 amp breaker that 100% have a higher one before (or a differential switch). Maybe in the output of the previous element (the one he'd like to work with) doesn't fit another cable, so he uses the input of the "child element"
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
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.
4:48 just curious; did you go to school for electronics and engineering? I’m not doubting your experience with this stuff bc the amount of video you have in the subject makes it obvious how experienced you are in this field.
That's really not a project for beginner (or even many seasoned engineers), especially if we are talking about a VFD for motors like those in this video. Not sure what the interest would be, especially if it should fit into a 10 minutes long video that can't even start to explain the problems.
@@NiHaoMike64 A small VFD costs about the same and it won't explode in your face if your screw things up. This really isn't something that you could homebrew cheaper or better, especially someone who has no idea about the issues.
Back in the 3rd year of bachelor studies I decided to make a three-phase frequency-regulated inverter designed for 400 V, estimated 0.6 kW, to run async motors. ... Years later I'm still recovering from the stress of IGBT shards flying all across the laboratory... Take care when playing with these beauties, lads...
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.
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. ;)
Man, I wish we had 3 phase power here in the USA. We just have split single phase.(120, 240 volt, 60 Hz) Three phase is SOOO much more efficient for driving motors, especially larger compressor motors. Both for air conditioning, and for compressed air. We do have 3 phase power in commercial buildings, usually, 120, 208 volts in smaller buildings, and 277, 480 volts in larger buildings. Because we use 60 Hz instead of 50 Hz, those voltages are just right for your 230/400 volt motors. They just run 20% faster, but use the same current, and produce the same torque.
occasionally stung by household ac 220v but the shock is not as strong as the standalone kw generator on the same voltage range,never try it at home! result might vary from one individual to another.
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
There are asynchronous motors that work with a single phase without having to create a second one with capacitors. The problem with them however is that they could start rotating forward or backward depending on the initial position of the rotor. To avoid that they have a small secondary coil that is physically offset towards the main one. The coil is used only when the motor is started and turned off with a relay when the motor spins up.
Damn this comment section is full of lots of definitive experts it seems. Perhaps I can learn a lot from these anonymous sources of information. I'm glad I trusted the comment section instead of the many books on soldering!
Always fun playing with these tiny motors, back is called a "fan cowl" , Cables should be Brown,Black,Grey in sequence, if you uses a small Inverter drive they are very cheap about £60 for a small sub kW motor like this you can run 3 phase motors of single phase in delta. When they get above 4kW you need to consider Star/Dela starting.
That you can't really do. You would need 3 of those, each wired to a separate phase of the mains (so no luck if you don't have 3 phase supply). And even then it is very unlikely that you would get the motor to spin because BLDC motors are not designed to be powered like this.
Well, the "easy" installation of this motor type, requires an overcurrent protection. This has to be installed and set according to the motor description of the motor plate, to ensure you don't burn the motor wires due to overload, loose wire, wrong installation(delta VS star) or any other fault that might happen over time. The temperature/overcurrent protection makes it a little less easy to install. Also, there is a lot more interesting stuff going on with the current, now that we start playing around with ac and a coil. The total amount of current drawn from this motor, can be lowered with the use of a condensator. You should bring out the oscilloscope and look at how the current tracks behind the voltage and how the current can change with an added capacitor. A cool experiment.
It seems to me that, up to some point, a greater slip would increase the motor torque, no? The more slip, the more the induced rotor current, the greater the field interaction, and the more force applied to the rotor, until it reaches the point where the whole thing slips to the next induction state and sort of 'falls back' a step in the stator field, at which point the motor would stall if the load didn't drop off because we're beyond what the motor can deliver. That makes the motor self-regulating within a defined load limit.
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
I use 3 phase all the time. Since, I work within the event industry. For us, we're unable to use "normal power" of single phase 230v, because all of our equipment draw tonnes of power.
![BLACK BAG - Official Trailer [HD] - Only in Theaters March 14](http://i.ytimg.com/vi/Du0Xp8WX_7I/mqdefault.jpg)
i love how you say ''squirrel cage''
Old Top Gear always said that the easiest way to identify a suspected German spy is to ask them to pronounce "squirrel"
Squibble
Sqvirrel
It is scribble cage 😡😂😂😂
Ohhhhhh I actually heard it as "scribble cage". Not that "squirrel cage" automatically makes more sense to me.
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.
Not sure what you mean. Sorry.
maybe it is fixed in this motor, but i doupt it
@@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.
@@TDG2654 it can literally fly like a bullet specially on 2 pole motors
@@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.
"Professionals" don't solder crimp contacts. That's a big no-no, especially on stuff that vibrates.
Haha you got me there.
Yeah I was about to say that good catch
Well. We're technically paying him for his work so technically he is a "technical professional". 😄
Also even pros make mistakes.
Why is that bad
@@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.
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 !
"I want to see if this motor works"
"Ah I cannot look into it"
**orders a new motor**
"Now I understand..."
stonks
@HarleyHilderson lmao
@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....
@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.
MAKER manifesto: If you can't open it, you don't own it ;-)
knowledge has a price.
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
Honestly most of this just goes over my head, but i enjoyed it regardless.
Stay creative :)
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.
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!
11kv motors?? damn, that is sick
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.
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 !
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
"There's a lot more to learn"
Oh boy if they knew...
Engineering can make any brilliant mind even more brilliant, but at the cost of sanity
@@Kalvinjj Relatable
Welcome in the world of Electrotechnics/Engineering...
DIY or Buy: VFD (or motor drive)
And yes safety will be a problem
Up
"Never work with 230/400 V if you are not a professional." Me playing with 3 microwave transformers: 😅
Lol
Be careful or 😳😬🤪😵😷🤕
Glad you are still alive
Thats a stupid statement -wear rubber gloves and nothing can happen to you .Worst case scenario breaker switch goes off.
@@zumbazumba1 Yeah No chance of electric fires. 😐😒
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.
i would like to know as well
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.
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.
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.
3phase induction motors - the black magic of electromechanic engineering. They are great for many reasons, especially for not blowing up if the rotor gets stuck (on pumps or woodchippers, for example). Thank you, Nicola Tesla.
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.
"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.
@@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.
How old is he?
@@arthurmead5341 He is 20 - Rising Junior ME in College and on a top Formula SAE team that is moving to E-Car.
I was waiting for induction motors for eternity thank you
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
Really love your vids. Keep up the good work. Cant wait for the next greenhouse video
Same
Coming soon!
For a second I thought I clicked at one of The Post Apocalyptic Inventor's videos after seeing the thumbnail. :D
I learned about AC motor at University. I have a lots of them. (300 W to 2kw motors ). Great video!
Where I work, a lot of our equipment is belt driven, so we select the output RPM by selecting the ratio between sheaves (pulleys).
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!
Finally understand how these motors work! Thanks
Btw love your videos!!!
Thank you!
The star configuration is also known as wye due to it looking like the letter Y.
It's also found in the flux capacitor.
Y don't they just call it Y
At University we called Y-star and "delta" - triangle
How does an induction motor Start?
"Broom brom broooomm"
Those who've seen the movie will understand 😂
just don't pee on my porch next time and i'll show you how a motor works
Damn it. Beat me to it.
up down up down up down
Electro boom
Ye college nahi factory hai
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
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.
Excellent explanation on how an asynchronous motor works. Particularly the "star" vs. "delta" wiring explanation. Thank You!
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.
23 years ago, I've learned this at the University. Good memories for a very old man.
I've often wondered if a BLDC driver would run a 3 phase induction motor
I think it depends on the values
I know about BLDC driver higher
Frequency so coil design for it.
The Induction motor needs 120° phase shift between the phases so if the driver can be programmed in this configuration then it will
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.
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
@@combinacijus if you have 3 phases and perma magnet inside you have synchronous motor (the more complex and powerful ones uses electromagnets)
I was in search of such vidoe explaining the motor in detail
Thanks for this
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.
sometimes they're rated for both, it'll just spin 20% faster on 60 hz
90% it will work just fine, maybe RPM will be a little bit different. That's the benefit of Async motors.
finally some real industrial engineering coming on to the channel, waiting for the introduction of Programmable Logic Controller on Great Scott
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.
I wish I saw this 2 months ago when I got my compressor working. Very awesome video. Thank you
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.
Please make a full video about distortion power factor. PLEEEEEAAAAASE
4:58 so in Germany the whole breaker panel is reversed. Input from the bottom output on top. (In Italy output Is on the bottom)
Cool. Initially I was like "WTF"!
Ahaha, anche io mi sono perso un attimo, cmq avere 3 fasi in casa sarebbe fantastico
he is working on a 16 amp breaker that 100% have a higher one before (or a differential switch). Maybe in the output of the previous element (the one he'd like to work with) doesn't fit another cable, so he uses the input of the "child element"
In germany the output is always at the top. With breaker boxes usually in the basement, this neatly matches most of the cables going up.
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
Ich hab das alles in der Ausbildung gelernt und hab sogar selber Motoren gewickelt. Sehr interessantes Thema.
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
That would be great!
How tf is your comment 1 week ago
Ajay Kalsi RUclips is drunk again !
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.
Hello 🖐️I love your Stabilo Art 😍
Thank you so much 😀
4:48 just curious; did you go to school for electronics and engineering? I’m not doubting your experience with this stuff bc the amount of video you have in the subject makes it obvious how experienced you are in this field.
Lol
I finally learned why that cap exists. Thank you!!
Haha took be back to school 17 years ago, love it 👍👍👍
In the US, houses do not get 3-phase AC. Houses here get two 120VAC lines 180 out of phase (with a common line that is at ground potential).
Hold up - does Germany have 3-Phase in every home?
Yes
@@saoritakebe8319 another thing the U.S.A lacks... Sadness.
Regular homes have main power supply of 3 phase 63 A each at the breaker box, although your installation is mostly limited to 40A
And we use this for our stoves - wich is probably the breaker scott hooked his therminals up ti
Or he just had it conveniently laying around because he has a gas stove and not an electrical one like us peasants. :)
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
I love your hand writing sir
can you try to make a vfd?
it is a little hard but a learning experience
That's really not a project for beginner (or even many seasoned engineers), especially if we are talking about a VFD for motors like those in this video. Not sure what the interest would be, especially if it should fit into a 10 minutes long video that can't even start to explain the problems.
Damien Maguire shows you how to modify a surplus Prius inverter (about $100) to run all sorts of 3 phase motors.
@@NiHaoMike64 A small VFD costs about the same and it won't explode in your face if your screw things up. This really isn't something that you could homebrew cheaper or better, especially someone who has no idea about the issues.
@@JanCiger The modified Prius inverter will be a lot more robust than those cheap VFDs. The continuous power rating is on the order of 20-30kW.
hey GS, you are an great electrical engineer, you and electroboom make my project work and i complete my study of electrical engineer
Thank You :)
You're welcome :-)
@@greatscottlab why germany have 400 volts? little bit confusing
@@danielgabriel9167 the phase-ground difference is 230V the phase - phase difference is 400V due to 120° shift
@@milanhlavacek6730 here in canada we have 120 v ac hahaha Here in vancouver near on electroboom
@@milanhlavacek6730 and i accidentally touch 230v in other country and it really hurts
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.
Great Scott 220v is dangerous Electroboom I like to play with 10000v
styropiro ... way way more voltage and death :D
photonicinduction as well
Ange Einstein sadly :/
FJ5 “Touch that and you’re a corpse before you hit the ground” - styropro, several times.
I've used lots of those motors on Wirth et Gruffat rotary machines.
Awesome video and also very well explained !! Great job from Great Scott !
Back in the 3rd year of bachelor studies I decided to make a three-phase frequency-regulated inverter designed for 400 V, estimated 0.6 kW, to run async motors.
...
Years later I'm still recovering from the stress of IGBT shards flying all across the laboratory... Take care when playing with these beauties, lads...
I have always wondered how the hell a 3 phase motor works on a single phase supply at our home, thanks for explaining
With a capacitor?
@@phorzer32 yes, adding a capacitor makes 2 phase.
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.
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. ;)
hey GreatScott how to make over discharge protection
Man, I wish we had 3 phase power here in the USA. We just have split single phase.(120, 240 volt, 60 Hz) Three phase is SOOO much more efficient for driving motors, especially larger compressor motors. Both for air conditioning, and for compressed air. We do have 3 phase power in commercial buildings, usually, 120, 208 volts in smaller buildings, and 277, 480 volts in larger buildings. Because we use 60 Hz instead of 50 Hz, those voltages are just right for your 230/400 volt motors. They just run 20% faster, but use the same current, and produce the same torque.
occasionally stung by household ac 220v but the shock is not as strong as the standalone kw generator on the same voltage range,never try it at home! result might vary from one individual to another.
it is fun, that is Europe sometimes standards says 220/380v and sometimes 230/400, but in fact, it is the same.
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
Excellent descriptions! I learned some things and really enjoyed this video. Thanks Scott!
U r comment is one week ago? How?
@@BalintNandori Early video release for Patreons.
There are asynchronous motors that work with a single phase without having to create a second one with capacitors. The problem with them however is that they could start rotating forward or backward depending on the initial position of the rotor. To avoid that they have a small secondary coil that is physically offset towards the main one. The coil is used only when the motor is started and turned off with a relay when the motor spins up.
Damn this comment section is full of lots of definitive experts it seems. Perhaps I can learn a lot from these anonymous sources of information. I'm glad I trusted the comment section instead of the many books on soldering!
Always fun playing with these tiny motors, back is called a "fan cowl" , Cables should be Brown,Black,Grey in sequence, if you uses a small Inverter drive they are very cheap about £60 for a small sub kW motor like this you can run 3 phase motors of single phase in delta. When they get above 4kW you need to consider Star/Dela starting.
Motors have always been like magic to me.
Awesome video sir!! Like always
Dope video Greatscott alot of good knowledge related to motors Thanks !
Its worth to sleeping late and waiting your video to be uploaded:>
Hope you enjoyed it!
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.
Great video, the explanation is very correct
8:50 that's synchronous slip
at 3:27, those are not circles drawn, in perspective.
Hey Scotty, I didn't see any squirrel in the cage. LOL🤣
Great video! I learned from it.
Can you make a video about powering bldc motors from the grid with 12 or 6v transformers?
That you can't really do. You would need 3 of those, each wired to a separate phase of the mains (so no luck if you don't have 3 phase supply). And even then it is very unlikely that you would get the motor to spin because BLDC motors are not designed to be powered like this.
@@JanCiger last year I tried (with 3 12v transformers) and it worked. It was suprising for me.
Well, the "easy" installation of this motor type, requires an overcurrent protection. This has to be installed and set according to the motor description of the motor plate, to ensure you don't burn the motor wires due to overload, loose wire, wrong installation(delta VS star) or any other fault that might happen over time.
The temperature/overcurrent protection makes it a little less easy to install.
Also, there is a lot more interesting stuff going on with the current, now that we start playing around with ac and a coil. The total amount of current drawn from this motor, can be lowered with the use of a condensator. You should bring out the oscilloscope and look at how the current tracks behind the voltage and how the current can change with an added capacitor. A cool experiment.
The magic smoke will appear 😂😂😂
at 2:54, were we not supposed to notice that the gearset Could have been be dismounted.
Great stuff, love your videos!
This very useful and great work
Love form india
We use these at work on out cream pots... Never have any issues with them.
What about control electronics? Should great Scott make a dedicated video about them as well??
For the next topic it might be interesting to discuss about soft starter
I still can’t get over the fact that every house in Europe has 3 phase service. I am so envious.
Yay next super awesome video! Btw im from Czech Republic :D
2:07 and thus create A FLUX CAPACITOR!!!!
please make and explain circuit for vfd for three phase and single phase motors in Buy/Diy series..
You should do a video on VFDs and the magic that they can do w/ such a motor.
It seems to me that, up to some point, a greater slip would increase the motor torque, no? The more slip, the more the induced rotor current, the greater the field interaction, and the more force applied to the rotor, until it reaches the point where the whole thing slips to the next induction state and sort of 'falls back' a step in the stator field, at which point the motor would stall if the load didn't drop off because we're beyond what the motor can deliver. That makes the motor self-regulating within a defined load limit.
Would love to see a video explaining how to make a variable frequency controller for these motors :D
Up
I am a fan of the Shaded-pole motor,
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
I use 3 phase all the time. Since, I work within the event industry. For us, we're unable to use "normal power" of single phase 230v, because all of our equipment draw tonnes of power.