Have you seen anything of sphere tires. Goodyear prototyped one that i knew of in 2015ish time. Would this be a logical was of manipulating a weight or some sort of mechanism to propell a ball or sphere in goodyears situation?
Best tutorial on RMF's for me by far. On a philosophical note, this video created sometimes in 2013 is still helping people 9yrs down the line. Amazing 👍👍
Thanks! Best explanation about the rotating magnetic field. I am from not electrical background and I hated this concept but now I have a clear understanding of this concept. Cheers! Thanks mate! Keep it up!
This is a good explanation of flux rotating with the current movement. I'm here because I bought a book on Tesla's writings.. I only have a pre-app in electrotech so I've next to no background.
Thanks for the feedback dlna4D, I fully understand your point. My plan was to do another video specifically on the induction and synchronous motor. I will get around to it, but I've promised to do one on generators first.
Very well explained. One point; the magnetic flux lines generated by phase 1 and phase 2 are separate fields and when you find the resultant, then it ends up with one magnitude and a direction that you showed. Additionally, if you increase or decrease the frequency you increase or decrease the speed (RPM) of the motor, and if you increase the number of pole pairs, you get the capacity the have more current draw and so resultantly produce higher torque. As I read on Quora; frequency is speed, current is torque, and voltage is the capacity to create torque.
The 90 degree phase difference at the start is a property of a two phase supply. If it were a three phase supply, the phase difference would be 120 degress. I'll do a video on AC generation within the next 12 months if you wish. Thanks for the feedback.
Sorry...I'm a bit lost here ( not an expert.....just trying to get my head around this) .....from where is the 2 phase supply coming from? In the UK we have a Single Phase Supply....am I right in assuming this is a Start and Run winding config?.....or split phase ? .gratetful for any guidance 🙂
@@robinfrancis789 This video was only for instructional purposes to show how a rotating magnetic field can be achieved. In the UK, domestic electrical supply is single phase and industrial supply is three phase. To obtain a rotating magnetic field with a single phase supply, a capacitor is used to split the supply into two phases, 90 degrees apart, as depicted in this video. I have another video that tries to explain how the split phase works. You can find it here: ua-cam.com/video/pbg_PF6MTwY/v-deo.html
Sir I'm from India I was searching for this type material of machine since one month and I got awesome video of yours. very good and understandable video u have made... salute sir।
Really great video, you helped me to actually understand what is going on rather than just be able to prove it with formulas. Much of the time the math obscures the basic ideas of what's really happening, and you've really clarified the ideas well.
Excellent video; it really helped me visualise the magnetic field inside AC motors. However, I noticed that the rotating magnetic field and the magnet have the same poles facing each other. Shouldn't they be opposite so that the magnet's S pole follows, or is attracted to, the rotating field's N pole?
It was you pouring it into my brain without any hindrance... absolutely fantastic...would love to see more of these videos. Doing awesome...keep doing more.
Thank you. This is the best video about magnetic flux inside single phase motor for me. Спасибо, это лучшее видео про магнитный поток в однофазном двигателе как по мне.
What a great description of rotating magnetic field..... Loved it.... Really awesome.... I guess you are a professor... If not then you must become....world needs people like you to teach upcoming generations.
Wow... finally a useful video! Long search, but worth the wait. Now if only he would have explained how the hell one is to do all this reversing of the magnetic fields and what not...I'm assuming there is a component needed between the power source and the motor, I just haven't a clue as to what it is.
Love the way you broke it down pretty simple I actually kind of get it. Only thing I would say is speak more into the mic, seemed like you were far away or with a low voice I mean so you could be heard better
06:56 I think the physical magent put inside will be upside down, as the North attracts the South and vice versa. Take number 1 position, for example, when the rotating magnetic field of the stator is North, the South pole of the magentic bar will face it(the blue color).
If you look down through the comments you’ll see plenty of discussion about that point. In short, if you hold a compass in your hand, the needle with N on it will point North as it is a North Seeking Pole, as opposed to a North Pole.
I've been looking at a lot of AC motor animations as this is one of the best. Could you be persuaded you to a) make a 3 phase version, and b) add a part about how they currents are induced on the rotor. The 3 phase motor is getting talked about more and more in electric car circles like with Tesla, and avg. drivers are trying to educate themselves.
Hi Sal. I fully understand what you're saying but what the textbooks tend to show is the North Seeking Pole on the magnet (i.e the South Pole) following the North Pole of the Stator. So I've followed that format, i.e. the pole marked 'N' on the rotating magnet is really a North Seeking Pole i.e. a South Pole. This is exactly as you suggested. Thanks for the feedback.
That is why I said one is a North seeking pole and the other is a north pole. On a compass, the north seeking pole (with N marked on it) of the needle points North. The same thing here.
Very helpful video, thank you! One question follows: In the first 40 seconds you show phase 1 current flowing through two coils, one at the top and one at the bottom. You then treat the two coils as one, or so it seems. Doesn’t each coil have a north and south pole? It seems to me that flux from the south pole of the upper coil would wrap around the stator and “connect” to the north pole of the lower coil. Thanks, again.
The two coils are wired in series, and yes each will have a north and south pole. The wiring has to be such that the direction of current in one coil is opposite to the direction of current in the other. Using the right hand rule, if your fingers point in the direction of the current, then your thumb will point in the direction of the North Pole. So, if you want the poles to point in opposite directions, then then direction of current will have to be opposite.
Great explanation. But I have one doubt- Shouldn't the bar magnet shown at last have opposite polarity? I mean north of bar magnet should be attracted towards south of magnetic field and vice versa...
Ok, think of it this way. When you hold a compass doesn't the needle with 'N' on it point towards the North Pole? It's the same here. The N on the rotor is a North Seeking Pole (i.e. a South Pole) just like a North Seeking Pole on a compass.
great video and very comprehensive. At min 7:00 arent the magnetic poles of rotor and stator supposed to align N to S? If not, please let us know the 'why' behind it. thanks in advance
Sorry about this but I have the same trouble with the north pole of the rotor attracting (aligning) to what is shown as a north pole of the stator. I think it's was an unfortunate oversight to an otherwise excellent demo. I.E. A north seeking pole should have an S on it.
Gregg Roessger Thanks for the feedback Gregg and I understand your frustration with the north poles. The only reason I did it that way is because it seems to be fairly common to describe it as such in quite a few textbooks.
well described video. It's clear information and enough to get principal rotating magnetic field. By the way, how can we set north and south using current direction? what's the parameter to get north and south reference in stator?
Fantastic, this is what the internet was made for
And porn
And memes
You're welcome. I'm delighted that it was of some use and your positive feedback will encourage me to do some more. Thanks for that.
Have you seen anything of sphere tires. Goodyear prototyped one that i knew of in 2015ish time.
Would this be a logical was of manipulating a weight or some sort of mechanism to propell a ball or sphere in goodyears situation?
Best tutorial on RMF's for me by far. On a philosophical note, this video created sometimes in 2013 is still helping people 9yrs down the line. Amazing 👍👍
I left school without any exam results, mainly because of poor teaching, I understood exactly what you explained, So hats of to you.
best explaination i had ever experienced...thank you so much..
well described. For the first time, I saw a worthy description of the rotating magnetic field. Claps. :)
Thanks! Best explanation about the rotating magnetic field. I am from not electrical background and I hated this concept but now I have a clear understanding of this concept. Cheers! Thanks mate!
Keep it up!
This is a good explanation of flux rotating with the current movement.
I'm here because I bought a book on Tesla's writings.. I only have a pre-app in electrotech so I've next to no background.
Thanks for the feedback dlna4D, I fully understand your point. My plan was to do another video specifically on the induction and synchronous motor. I will get around to it, but I've promised to do one on generators first.
Very well explained. One point; the magnetic flux lines generated by phase 1 and phase 2 are separate fields and when you find the resultant, then it ends up with one magnitude and a direction that you showed.
Additionally, if you increase or decrease the frequency you increase or decrease the speed (RPM) of the motor, and if you increase the number of pole pairs, you get the capacity the have more current draw and so resultantly produce higher torque. As I read on Quora; frequency is speed, current is torque, and voltage is the capacity to create torque.
The 90 degree phase difference at the start is a property of a two phase supply. If it were a three phase supply, the phase difference would be 120 degress. I'll do a video on AC generation within the next 12 months if you wish. Thanks for the feedback.
Sorry...I'm a bit lost here ( not an expert.....just trying to get my head around this) .....from where is the 2 phase supply coming from? In the UK we have a Single Phase Supply....am I right in assuming this is a Start and Run winding config?.....or split phase ? .gratetful for any guidance 🙂
@@robinfrancis789 This video was only for instructional purposes to show how a rotating magnetic field can be achieved. In the UK, domestic electrical supply is single phase and industrial supply is three phase. To obtain a rotating magnetic field with a single phase supply, a capacitor is used to split the supply into two phases, 90 degrees apart, as depicted in this video.
I have another video that tries to explain how the split phase works. You can find it here: ua-cam.com/video/pbg_PF6MTwY/v-deo.html
@@RoddyMcNamee That's great Roddy....really appreciate your feedback and guidance 👍👍
This is gold... thank you for putting this together... best explanation that I was able to follow and understand.
loved it :D I didn't realize how a magnetic field can rotate.. it made this clear :D
amazing. u make it so freaking simple. clear and concise. not like those pretentious teachers. thanks mate.
Fentastic mind-blowing marvellous bro u cleared many doubts from this video
Sir I'm from India
I was searching for this type material of machine since one month and I got awesome video of yours. very good and understandable video u have made... salute sir।
Excellent explanation, very easy to understand, thanks
Really great video, you helped me to actually understand what is going on rather than just be able to prove it with formulas. Much of the time the math obscures the basic ideas of what's really happening, and you've really clarified the ideas well.
Excellent. I see many video to understand RMF. This video is the Best among all video that I observed. Thanks Roddy to make it easy and clear to me.
I was shocked, amazed how this guy can explain very simple compare to any other channel who doing the same subject
The explanation is very Good. Thanks for the time you put in.
Now I understand what a rotating magnetic field is. Thank you very much
Best explanation of rotating magnetic field
One of the best description I found. Thank you so much. Please keep up your great work
Excellent video; it really helped me visualise the magnetic field inside AC motors. However, I noticed that the rotating magnetic field and the magnet have the same poles facing each other. Shouldn't they be opposite so that the magnet's S pole follows, or is attracted to, the rotating field's N pole?
Okay, I figured it out from watching your other video. You refer to the magnet's poles as "North/South seeking poles".
Simple with very clear graphics. Brilliant explanation. It would be nice if the same could be described for the 3pH windings
Thanks Sir, i got the concept behind rotating magnetic field
It was you pouring it into my brain without any hindrance... absolutely fantastic...would love to see more of these videos. Doing awesome...keep doing more.
Why is the magnet's north pole is not towards the south pole of rotating field?
This is awesome! The Physics of motors is really intriguing.
you made it look so simple.
thank you
i am really thankful for your demonstration you really clarify some concepts that i entirely don't understand thanks very much
Thank you. This is the best video about magnetic flux inside single phase motor for me. Спасибо, это лучшее видео про магнитный поток в однофазном двигателе как по мне.
Best description ever thanx
Thank you so much man. The video is done perfectly. Simple, interesting and visual. Much needed, thanks again
Really very good, imaginable and easily understandable, thank you very much sir
This is a very precise and clear illustration of the concept. Thank you so much.
well described. A very good desription of a rotating magnetic field. Thanx from Belgium
What a great description of rotating magnetic field..... Loved it.... Really awesome.... I guess you are a professor... If not then you must become....world needs people like you to teach upcoming generations.
Thank you very much for the encouraging comments. The world needs more people like you encouraging and inspiring others.
Nice picture added to help understanding.
Wow... finally a useful video! Long search, but worth the wait. Now if only he would have explained how the hell one is to do all this reversing of the magnetic fields and what not...I'm assuming there is a component needed between the power source and the motor, I just haven't a clue as to what it is.
Excellent Explanation and animation. Many thanks.
Thanks a lot ... Finally had all my doubts regarding rotating magnetic field cleared! Really awesome.
Fantastic video Roddy! I am studying AC/DC motors and this is by far the best ive found so far!
Love the way you broke it down pretty simple I actually kind of get it. Only thing I would say is speak more into the mic, seemed like you were far away or with a low voice I mean so you could be heard better
I had a lot of doubts regarding the rotating magnetic field. All clear now!!! Amazing video! Helped a lot :)
06:56 I think the physical magent put inside will be upside down, as the North attracts the South and vice versa. Take number 1 position, for example, when the rotating magnetic field of the stator is North, the South pole of the magentic bar will face it(the blue color).
If you look down through the comments you’ll see plenty of discussion about that point. In short, if you hold a compass in your hand, the needle with N on it will point North as it is a North Seeking Pole, as opposed to a North Pole.
best explanation , i have ever had. Thanks Sir
First time I understood with such a decent explanation thank you sir god bless you
thanks so much! the best explaination i have ever experienced!
Clear and simple explanation.
thank you very much I was wandering like this rotary field but now i learned it from you
Thank you for your clear explanation!
You made this so easy to understand, thank you!
you have made this really easy to understand...thanyou !!!
Clear and easy explanation! Great video, thank you very much!
Great video!! explains thoroughly the concept of rotating magnetic field..
Excellent and Simple.....makes perfect sense......thank you.
Magnificent explanation. Thank you!
I've been looking at a lot of AC motor animations as this is one of the best. Could you be persuaded you to a) make a 3 phase version, and b) add a part about how they currents are induced on the rotor. The 3 phase motor is getting talked about more and more in electric car circles like with Tesla, and avg. drivers are trying to educate themselves.
Thanks a lot. I was struggling to understand this from the book, its all clear now.
Hi Sal. I fully understand what you're saying but what the textbooks tend to show is the North Seeking Pole on the magnet (i.e the South Pole) following the North Pole of the Stator. So I've followed that format, i.e. the pole marked 'N' on the rotating magnet is really a North Seeking Pole i.e. a South Pole. This is exactly as you suggested. Thanks for the feedback.
Thank you sir. Beautiful illustration 👍
Thanks a lot for this! I can finally understand the rotating magnetic field!
Thanks very clear and enligthening.
awsome explaination thats how everyone should explain this hats off !!
Very clear. Excellent. Thank you
Excellent explanation!!!
Great video, easy to understand, thank you!
very gud explenation, like they way u not boasting with unnecessary.
Really helpful video. Thank you!
7:13 like pole repel, unlike pole attrack, it should follow the rotating field with its opposite polarity
That is why I said one is a North seeking pole and the other is a north pole. On a compass, the north seeking pole (with N marked on it) of the needle points North. The same thing here.
That is GRAET explanation !
much thanks from Korea !
made the concept clear.
thanks
Very helpful video, thank you! One question follows: In the first 40 seconds you show phase 1 current flowing through two coils, one at the top and one at the bottom. You then treat the two coils as one, or so it seems. Doesn’t each coil have a north and south pole? It seems to me that flux from the south pole of the upper coil would wrap around the stator and “connect” to the north pole of the lower coil. Thanks, again.
The two coils are wired in series, and yes each will have a north and south pole. The wiring has to be such that the direction of current in one coil is opposite to the direction of current in the other. Using the right hand rule, if your fingers point in the direction of the current, then your thumb will point in the direction of the North Pole. So, if you want the poles to point in opposite directions, then then direction of current will have to be opposite.
@@RoddyMcNamee : Makes perfect sense. Thanks again!
Beautifully explained! Appreciate it bud!
thank you sooo much!! you help a lot with my physics project
Agree, well described and simply explained in your drawing. :)
Excellent..... Let's go on!
Really helpful explanation. Thank you so much.
so simply explained. thanks!
Best explanation ever seen
Excellent description! Is this the same as a time based magnetic field?
+Robert Kemper
Yes
Omg! Best explanation ever! This is what I’ve been looking for thank you🙏
Clear and brilliant explanation, Even wiki's explanation isn't this good
Thanks :)
Oh my god, thank you so much! I really couldn't figure out how this thing works, but you explained it perfectly! Great job!
Nice Explanation, Thank you
Great explanation. But I have one doubt- Shouldn't the bar magnet shown at last have opposite polarity? I mean north of bar magnet should be attracted towards south of magnetic field and vice versa...
Ok, think of it this way. When you hold a compass doesn't the needle with 'N' on it point towards the North Pole? It's the same here. The N on the rotor is a North Seeking Pole (i.e. a South Pole) just like a North Seeking Pole on a compass.
Great video. Good explaining. Nice work.
Best explanation.
This helped me so much. What a great explaination! Thank you.
Nice. Thought usually we are interested in 3-phase motors. And they differ from this 2-phase example a lot.
great video and very comprehensive. At min 7:00 arent the magnetic poles of rotor and stator supposed to align N to S? If not, please let us know the 'why' behind it. thanks in advance
There is a North pole on the stator and a north seeking pole on the rotor
Sorry about this but I have the same trouble with the north pole of the rotor attracting (aligning) to what is shown as a north pole of the stator. I think it's was an unfortunate oversight to an otherwise excellent demo. I.E. A north seeking pole should have an S on it.
Gregg Roessger
Thanks for the feedback Gregg and I understand your frustration with the north poles. The only reason I did it that way is because it seems to be fairly common to describe it as such in quite a few textbooks.
well described video. It's clear information and enough to get principal rotating magnetic field. By the way, how can we set north and south using current direction? what's the parameter to get north and south reference in stator?
great job.. well done ,could you please make a video explain the regenerative braking principle
Excellent explanation...
really helpful and easy to understand... thank you...
You're welcome! Glad it was of use.
this is an excellent tutorial video. !!!!!!!!!!