Awesome and easy to understand. I'm a mechanical engineer that deals with lots of electronics but don't have a solid understanding of the magic pixies that make up electronics. You provide an education in a way I can understand. Thank you. Wish more professors would teach like this. Reading and understanding books is a awful and slow challenge for me because of dyslexia that was never seen in elementary school (they didn't look for things like that in the 1970's). Videos help many such as myself that learn visually.
Thank you for this video! I've heard so many people talking about VFDs at work. I thought it would be a much more difficult concept to learn before seeing this video. It was so easy to understand! The real world example (changing frequency to a ceiling fan) helped me understand exactly what was going on! Excellent video!
Great, good deal bro. VFDs have a plethora of settings a have some with over 120, but this is a very basic intro. Besides they have a lot of internal components that might get damaged if calibrated incorrectly.
this really shines a light on to why manufactures prefer to size a motor a bit larger. if my blower motor is rated @1 inwc they often times say for reliability reasons it should be less the .7 inwc even tho its rated at 1 inwc. building on this, heat is what kills a motor and my amp draw is significantly lower at .7 I have a lot less heat and in relative terms more airflow for the given amount of heat. super cool thanks for the video. I already knew how a VFD worked but i'm happy i watched it anyways because this is key information.
Super tutorial! I am contemplating replacing a single phase motor on my drill press with a 3 phase motor and a VFD. I think I have a better understanding of torque vs. speed now. Thanks.
Thanks a lot for this video. Definitely appreciate you going all the way from how a motor that would benefit from a VFD works and how, internally, the VFD works, to the applications of the device itself. Much appreciated.
Agreed, I came to understand the DC-AC inversion and at 8:00 he makes it a lot more understandable.. Yet I don't get why the motor sees that conversion as a sinwave equivalent(and because it is dumb is not enough to account for it)
1 thing he didnt really explain is that was the on/off square wave VOLTAGE pulses to motor. Simply when you have a resistance (motor windings) and you apply voltage to a resistance, you get a current drawn by the load (motor). Because the voltage on/off pulses are so quick (microseconds, not even milliseconds), the motor cant tell that the voltage is going on and off so quick and continues to draw a near sinusoidal CURRENT and therefore rotate. As voltage stays on for more and more time, the current drawn reaches its peak, then voltage on/off time (mark/space) is reduced again, the current drawn starts to drop to zero, then the negative bus voltage is switched on to draw the negative current. The sinusoidal 'sinewave' shown over the square wave in video was the CURRENT drawn by the motor. Reducing the voltage on/off times reduces current frequency, which is directly related to motor speed, eg; 10Hz - 60Hz current draw.
+Ernesto Sastre, it seems like the it's no longer a sine wave anymore. It's like a digital signal or binary code ( varying intensity within the - or the +) so this trick kind of fools the motor into start spinning. perhaps if I attached mi oscilloscope I'd be able to see a squarish sine signal (well sort of) genius. Hit replay and see if I make sense.
+lastnameavailableok One 60 Hertz means that the current changed 60 times in one second + to -, back and forth. One Hertz is 1/60th of second. If the VFD was capable of handling kHz or MHz then, yes it would be thousandths or millionths of a second.
Schools don't have to compete for your attention by focusing on what is best for you. They're in the business of making legislators/funding sources happy.
Motors are dumb!!! Hahaha 🤣 cool video!!! I’m an experienced electrician but I always watch this video, it makes me laugh and it’s always good to go back to the basics once in a while.
Great video! At the next level up, it's not "positively" or "negatively charged". The alternating voltage applied results (with a lag) in a stator current and an alternating magnetic field in the stator. The changing magnetic field induces a corresponding field in the rotor. Which is more complex, and why they are talking about charge. 😉
Very good video, however, don't forget a VFD is the most expensive way to save energy dollars on motors for a facility or home, in the end, we are talking about reducing demand charges which is the reduction in the electric bill. Reducing electric charges can be done in a number of ways 1 - Schedule the time when large motors will run, generally moving those operations to later periods say, late after to evening, 2 - hard start kits, which are a large capacitor place at the motor being started reducing in-rush draw and reducing demand on the electrical system, 3 - VFDs, however, make sure all motors with VFD's are inverter-duty or change the standard motors to ECM type which will have a cost saving also.
Well done mate got a proper outlook on how a pwm code in an IGBT just cheats it’s way into mimicking the sine wave through continuous but yet discreet shots of durations altering frequency and voltage.. will join training duly..
This explains why the control boxes for the huge ventilation fan motors at my Counties welding shop are soo big, I thought the control boxes for the fan were just for starting and shutting off the motors, then the instructor said the control boxes were for how much air is being sucked out and it senses what the air pressure in the room is, they're huge 3 phase motors maybe 20 or so HP, so how can you control the speed of huge 3p motors, with huge VFD boxes
Well here is the market that will need this... Household Generator gives e.g. 57Hz where the Inverter needs grid input of 50Hz. So the Inverter rejects the input from the Generator. A Unit that can convert Household Generator output to ~50Hz (or what the Inverter in other areas of the world require) will have a good market size if it is not too expensive.
How can we lower the frequency to 20hz and everything is normal just slow, and sometimes when the frequency hit 48 47hz a huge problem appears putting the machine in danger ?
Very good video, although I’m well versed in everything you covered this would be an awesome video for someone just starting out, I wish this type of thing was available to me 25 years ago
What sort of (in)inefficiency is caused by the VFD itself? Those converter/inverter/switching processes all consume power and all introduce power losses. I'm guessing it's all about right-sizing the device for the application (and the budget) to maximize real savings.
Not really Considering it's all based on voltage, voltage not used is money saved. You cant dissipate voltage without a use. However, incorrect amperage use will use excessive voltage and burn out motor coils. But breakers and fuses regulate this.
Good explanation of the inner workings of a VFD. However, to say that the VFD outputs AC voltage would be technically incorrect. It is a square wave. I know I am being nit picky.
Awesome and easy to understand. I'm a mechanical engineer that deals with lots of electronics but don't have a solid understanding of the magic pixies that make up electronics. You provide an education in a way I can understand. Thank you. Wish more professors would teach like this. Reading and understanding books is a awful and slow challenge for me because of dyslexia that was never seen in elementary school (they didn't look for things like that in the 1970's). Videos help many such as myself that learn visually.
Bionic reading try out
Holy crap!!! The internet can be a important source of learning! This is VERY VERY USEFUL. Thanks for sharing!
Thank you for this video! I've heard so many people talking about VFDs at work. I thought it would be a much more difficult concept to learn before seeing this video. It was so easy to understand! The real world example (changing frequency to a ceiling fan) helped me understand exactly what was going on! Excellent video!
Great, good deal bro. VFDs have a plethora of settings a have some with over 120, but this is a very basic intro. Besides they have a lot of internal components that might get damaged if calibrated incorrectly.
It is a bit more complicated than what he explained
@@oscar27ization is it? What are some other things I should learn about VFD: terms and definitions I know to begin my deep-dive search?
this is probably the best technical video I've ever set my eyes on, the communicator explains VFD with passion like his life depends on it woow Bravo.
Probably one of the most clearest and simply put explanations on VFD...Great job guys!
The narrator explained VFD basics very clearly.
this really shines a light on to why manufactures prefer to size a motor a bit larger. if my blower motor is rated @1 inwc they often times say for reliability reasons it should be less the .7 inwc even tho its rated at 1 inwc. building on this, heat is what kills a motor and my amp draw is significantly lower at .7 I have a lot less heat and in relative terms more airflow for the given amount of heat.
super cool thanks for the video. I already knew how a VFD worked but i'm happy i watched it anyways because this is key information.
Super tutorial! I am contemplating replacing a single phase motor on my drill press with a 3 phase motor and a VFD. I think I have a better understanding of torque vs. speed now. Thanks.
Learned about this technology when i started working for the rail road. AC propulsion was replacing DC traction power. But you guys teach it better!
we need these kind of channels on youtube
The best VFD training I have seen thusfar! Thank you!
What a great explanation of how a VFD functions!
Now there's a proper video for technically challenged people like me!!! Great work....thanks a lot
As a RAC engineer I give u 5 stars for very useful information in this video.
⭐⭐⭐⭐⭐
Absolutely best presentation to understand the differences in single and three phase oin the motor. Great job guys thank you.
Thanks a lot for this video. Definitely appreciate you going all the way from how a motor that would benefit from a VFD works and how, internally, the VFD works, to the applications of the device itself. Much appreciated.
The best tutorial on VFD. \m/
Agreed, I came to understand the DC-AC inversion and at 8:00 he makes it a lot more understandable..
Yet I don't get why the motor sees that conversion as a sinwave equivalent(and because it is dumb is not enough to account for it)
1 thing he didnt really explain is that was the on/off square wave VOLTAGE pulses to motor. Simply when you have a resistance (motor windings) and you apply voltage to a resistance, you get a current drawn by the load (motor). Because the voltage on/off pulses are so quick (microseconds, not even milliseconds), the motor cant tell that the voltage is going on and off so quick and continues to draw a near sinusoidal CURRENT and therefore rotate. As voltage stays on for more and more time, the current drawn reaches its peak, then voltage on/off time (mark/space) is reduced again, the current drawn starts to drop to zero, then the negative bus voltage is switched on to draw the negative current. The sinusoidal 'sinewave' shown over the square wave in video was the CURRENT drawn by the motor. Reducing the voltage on/off times reduces current frequency, which is directly related to motor speed, eg; 10Hz - 60Hz current draw.
+Ernesto Sastre, it seems like the it's no longer a sine wave anymore. It's like a digital signal or binary code ( varying intensity within the - or the +) so this trick kind of fools the motor into start spinning. perhaps if I attached mi oscilloscope I'd be able to see a squarish sine signal (well sort of) genius. Hit replay and see if I make sense.
+lastnameavailableok One 60 Hertz means that the current changed 60 times in one second + to -, back and forth. One Hertz is 1/60th of second. If the VFD was capable of handling kHz or MHz then, yes it would be thousandths or millionths of a second.
@@lastnameavailableok GOOD EXPLANATION!
Holyshit!!!! I actually learned something from the Internet...why isn't school this easy.
jasper fatty complication is simplicity misunderstood.
Because schools are business in a way they can careless if you learn or not they just look the money & then of course politics
@@marcematt2214 I don't think what you said is necessarily true.
The people behind these videos are professionals on this field, of course they would teach and explain better in particular topics of their field.
Schools don't have to compete for your attention by focusing on what is best for you. They're in the business of making legislators/funding sources happy.
Excellent! Highly explanatory and one of the best I have seen
Nice video. We use a VFD for our ice rink. It's the coolest thing ever.
Excellent 101 training, so clear and easy to fathom
This is a best video ever that make me more understandable about VSD. Thanks
Never thought I'd see Tesla's image combined with a disco mirrored ball :-)
Best explanation I found on the internet after hours of searching! Thank you very much!
Motors are dumb!!! Hahaha 🤣 cool video!!! I’m an experienced electrician but I always watch this video, it makes me laugh and it’s always good to go back to the basics once in a while.
Thank you for showing the reason why VFD save $$$ and very clearly!
Great video!
At the next level up, it's not "positively" or "negatively charged". The alternating voltage applied results (with a lag) in a stator current and an alternating magnetic field in the stator. The changing magnetic field induces a corresponding field in the rotor.
Which is more complex, and why they are talking about charge. 😉
I was trying to see if anyone was going to point this out. Glad to know some people still know what they're talking about!
Best explanation of a VFD EVER. Thanks.
This video is pretty cheeky, particularly for so large a company. That's an observation, not a complaint.
One of the best informational videos I have seen in a long time and clearly described. Wow!!
Great video. Disco Tesla was just what I needed this morning.
"It's not perfect, but motors are dumb.." Hahaha that was hilarious
😂 😂 😂 😂 😂
the motors are dumb really, because they are dead objects and not living creatures😂😂😂
Oh@ my God you're great I'll watch your video again & again thank you! Sir
Very good video, however, don't forget a VFD is the most expensive way to save energy dollars on motors for a facility or home, in the end, we are talking about reducing demand charges which is the reduction in the electric bill. Reducing electric charges can be done in a number of ways 1 - Schedule the time when large motors will run, generally moving those operations to later periods say, late after to evening, 2 - hard start kits, which are a large capacitor place at the motor being started reducing in-rush draw and reducing demand on the electrical system, 3 - VFDs, however, make sure all motors with VFD's are inverter-duty or change the standard motors to ECM type which will have a cost saving also.
Well done mate got a proper outlook on how a pwm code in an IGBT just cheats it’s way into mimicking the sine wave through continuous but yet discreet shots of durations altering frequency and voltage.. will join training duly..
Excellent! VFDs are widely used in the oil and gas industry!
You killed me with the Tesla impression........LOL!!!
This tutorial is unbeatable and unprecedented. Thanks.
this is the best video about 3 phase... hands down
SIMPLY AWESOME!! It all makes sense to me now.
Yep brilliant video, I've watched heaps that were nowhere close to this. Well done
Yea I learned and got clarity on PWM process. Makes me want to build my own VFD.
This explains why the control boxes for the huge ventilation fan motors at my Counties welding shop are soo big, I thought the control boxes for the fan were just for starting and shutting off the motors, then the instructor said the control boxes were for how much air is being sucked out and it senses what the air pressure in the room is, they're huge 3 phase motors maybe 20 or so HP, so how can you control the speed of huge 3p motors, with huge VFD boxes
Excellent explaination thank you very much,
"The motor is dumb..." Great video, thanks!
2022 update: 7:05 they’re now called IGBT+Youth 🏳️🌈
Althoug i m not new to this stuff this is a absolutly great explanation video
this was a Very Finely Detailed video.
Very good understanding and explation of VFDs
Great Refresher Course! Kudos on the Humor.
If someone would like to get some practice with sizing drive systems, try the DriveConstructor online course
dear, sir, it is an invaluable lecture and go-ahead to share with us, thanks a lot.
2017 Revit MEP Electrical......loving it!! Great video Eaton/Westinghouse :-)
Excellent and very comprehensive tutorial.
Very detailed. Thankyou...
Do you video sir how to troubleshoot overheating vfd
Very good. Thanks for making it available.
perfect usage for this .. is a elevators .. most efficient tech we used so far
Well here is the market that will need this...
Household Generator gives e.g. 57Hz where the Inverter needs grid input of 50Hz. So the Inverter rejects the input from the Generator.
A Unit that can convert Household Generator output to ~50Hz (or what the Inverter in other areas of the world require) will have a good market size if it is not too expensive.
hands down the best vfd video!
Great explanation of everything!
well done Eaton team! gotta luv the disco ball!
pow pow pow!!! Is that how a VFD works? I didn't know it was that easy
Very good explanation Sir excellent video👌
Don't forget to make sure you have shaft grounding rings for any motor on a VFD.
awesome video. Super easy to understand
YOU ARE A GOOD COMMUNICATOR!
Exceptional videos, thank you
This narrator for President!
Great video very informative
this video explains very well how brushless DC motors work. in terms of the mosfets right?
Great video great explanation .. thumbs up :)
Nice video about function of a VFD
amazing explanation how three phase motors work. very helpful !!! :)
Thanks...keep them coming...
How can we lower the frequency to 20hz and everything is normal just slow, and sometimes when the frequency hit 48 47hz a huge problem appears putting the machine in danger ?
Bueatifully explained! Thanks.
Nicely explained! You have an interesting way of writing an 'S'. :)
Very good video, although I’m well versed in everything you covered this would be an awesome video for someone just starting out, I wish this type of thing was available to me 25 years ago
Brilliant Video. What a gentle introduction to VFD 🫡🫡
What sort of (in)inefficiency is caused by the VFD itself? Those converter/inverter/switching processes all consume power and all introduce power losses. I'm guessing it's all about right-sizing the device for the application (and the budget) to maximize real savings.
Not really
Considering it's all based on voltage, voltage not used is money saved. You cant dissipate voltage without a use. However, incorrect amperage use will use excessive voltage and burn out motor coils. But breakers and fuses regulate this.
Absolutely amazing video! Thanks!
Thank you very much, nice explanations ... you're the best
Pretty good little video. Nice work.
Hi, may I ask what is the relationship between power and speed for a constant torque drive?
Thank you well done training video.
Just the level of detail I was looking for... Thank you for this information!
Love this video. Helped me in a way I could understand!
So smart! Loved it.
Great video.
amazing video on power electronics
Good explanation of the inner workings of a VFD. However, to say that the VFD outputs AC voltage would be technically incorrect. It is a square wave. I know I am being nit picky.
Great introductory video
Great explanation. Thanks for easing it out!
great explanation
Excellent video. Thanks.
Desde Colombia, gracias
I expect trains in application... but you used fan instead
Great video!!
Really awesome video. Thanks
Hi, I like your lecture. Thanks