These videos are like liquid gold to anyone remotely interested in electricity and how it works. The explanation and animations make it so easy to understand
My mental capacity was at peak crumbling from being frustrated and burned out for hours just before I met this video. The semester exams kept knocking at my door. I was almost in tears as I tried to keep seated and watch in this dead of the night. This video was like a shot of an anti-anxiety medicine. I couldn't wish for more than this. You're an angel.
I don't think I've ever seen such an incredible explanation of anything. I mean, that animation was just unbelievable! I knew how a VFD worked... but now I REALLY KNOW. Thanks for all of that, much appreciated guys.
This couldn't have been published at a better time. I am a current UMaine electrical engineering student and am about to embark on my senior project, which happens to be a VFD I am constructing with a partner, by ourselves. This video helped tremendously, and we will be sure to give you more than enough credit come presentation time. Thank you so much for this.
Amazing explanation. We engineers have gone through these lessons during our electrical engineering classses, but never had the opportunity to visualize anything in such perspective. Kudos to the creator.
Retired robotic & VFD tech here. Absolutely wonderful video. Its done well for what is needed at this part of the training exercise. Had a great time in Aerospace and “other” government facilities working on so many different things.
Very good explanation of VFDs. Not mentioned here, but you can also get a 230v single phase in to 380v three phase out VFD. Extremely useful to allow the use of 3 phase workshop equipment when you only have a single phase supply!
Your videos are amazing. Just throwing this out there. I'm a retired shipyard electrician and something I've seen several times are people mis-wiring tools because they believe that pos and neg switches back and forth such as the light bulb plugged into the receptacle seems to suggest. With that logic, they see no reason to determine which wire in the cord is hot and which is neutral because they believe that AC just switches back and forth. The problem arises when the metal frame of a hand tool becomes energized and they get shocked. It should be noted that at no time is the Earth/Neutral/Ground... side of the circuit 120/240/460...V of a - single/split phase - positive. I love these videos!
God Tier teacher! I work in a trade school and sometimes it's hard for the students to get a grasp of the material, but these videos explain everything so clearly!
One of the best videos I've ever seen explaining VFD. It takes some time to explain to technicians at work, and some experience to fully understand it. Will definitely utilize this... Thank you for posting, Automation specialist.
This is better than the apprenticeship school. One video is worth more than ten thousand words or pictures. I am a retired electrician who is still learning from TH-cam.
These are absolutely amazing. I already have learned this stuff, but these are absolutely incredible for a refresher and I show it to people interested too and they can grasp most of it as well. Please don’t stop making these videos!!!
Awesome explanation! I'm currently leading a team that's in charge of designing a groundwater pumping system that will require a rather large centrifugal pump. The area in question only has single phase power available, but powering our pump will likely require 3 phase power. A mentor suggested to us to look into using a VFD. This video really helped me understand the concept and I can't wait to share it with the rest of my team! Thank you!
It was very helpful. I studied this circuit in bachelor but did not know the application. Now at work i am working with VFD modules. Thank you for the simpliest explaination.
It would have been nice to have had videos like this when I was in college for engineering. I had to work real hard to pass and now I am a Professional Electrical Engineer
I won't lie, when I took a look at a VFD diagram I at first was like, "Nah, a 3-phase AC motor can't be driven by (essentially) a 3-phase DC load/drive." Then after watching this video, I was like, "Welp, I wasn't technically wrong but nor was I right either." After watching the last section of the video I mean on how the IGBTs simulate or get the DC current to behave in a manor that is similar to that of AC. Genius stuff. :) I work at a package handling place (won't disclose where just because I want to keep my privacy) and my supervisor asked me what I wanted to do and I said, "Well, I want to climb up the ladder in this place" and I was asked if I went to school and I said, "I don't because it'll cost a bit much for what I'm making but I am self-taught" and they asked, "What do you know if you don't mind me asking?" and I was like, "Well..." I looked and I gestured towards the Eaton belt motor and I said, "you see that blue motor that's driving the belt system?" and they nodded, I then went on to explain in a super quick summary that the motor is essentially driven by DC electricity but there is a limitation of how much it can vary the speed and what drawbacks there are too it, like for example if you try to push more voltage into it, it could go faster or it could detriment it or damage the coils. but then again I can be entirely wrong on that statement alone and I feel embarrassed. Can someone correct me just in case if what I said is wrong? I don't market myself as a world genius, I only market myself as a person who just wants to be properly informed and have the correct information on-hand. That and I love to learn new things from computers to auto mechanics. Anyway, my supervisor was just surprised and was like, "Why aren't you in engineering man? You'd be great at that and you wouldn't have to worry about manual labor all that much." And I said with honesty that, "I would love to man, but I'm not certified in that area of expertise because I am self-taught and I can't say that I know everything because I don't. That is why I would like to learn and confirm everything first before I can justifiably say that I am certified. Just covering my bases is all." and the supervisor nodded and said, "Understandable and very honest." He didn't say that to be sarcastic, he said that with sincerity as in, 'I'm glad that you're honest with yourself and others, most would get cocky and wing it.'-sort of thing. Sorry if this rambling just lead into nonsense, I just love to learn and I love this video. Thank you so much. :)
I really perfect tutorial. No music, no nervous voice, great graphics, good to understand also by people with other mother tongue. Thank you verry much.
I wish I would have had these videos to explain everything when I was going to college 20 years ago!! These are awesome, you make it very easy to understand the principles of electricity and how things in our lives work....Cheers guys!!
Well done video. As a Danfoss rep, I plan to use this for my customers. The only mistake I found in your video is the description starting around the 9:22 mark. The current will be flowing in 3 of the diode except when one of the sine waves crosses zero.
What a fantastic Video, Clear Concise and Precise. I am from a Marine and Mechanical Engineering background and videos like this drags us into your world of electrical Engineering.
This is video, and all of the videos on this channel, are hands down the most effective learning resources I’ve ever come across, across all subjects I’ve sought knowledge about. I’ve learned more about electricity in the last 30 minutes than I have in the last 3 years of dabbling. Thank you SO MUCH for producing these amazing videos!!
Thanks a lot for this one! Could you please share a source explaining what kind of damage can occur to a VFD or motor if the phases are connected in the incorrect order?
So Google literally reads your mind lol or more likely traces very well your browsing patterns....:-) Then you wonder who is thinking here - you or Google? LOL
This is by far the best channel i ever seen for electrical knowledge. I am super super confusing in electrical engineering, really appreciate your effort to make it more understandable. Really thanks a lot!!!!! good job bro!
I’ve been an Electrician for a long time starting in the USCG but never had the opportunity to learn about “freak drives”. Thank you for the tutorial and I bought you a cup of coffee in appreciation!
Nice explanation. Just a small correction: From time 4min40sec, I think peak voltage and current has a 90° phase to peak flux, therfore the anmiated electrons are moving at the wrong time. The point of maximum flux should be aligned with zero current (and zero voltage) as dB/dt = 0 during peak flux.
I'm just studying to become a train technician and this video was let's say VERY useful information about the IGBT control over the three phase sinewaves. Thanks a lot! Even our teacher is recommending your channel :)
These videos are awesome. Kudos to the content creator. I have been in the trades for about 5 years and all the schooling I have received left me with gaps in explanations. Thank you so much for the visual aids in helping to truly understand the basics of electricity.
Thanks for these videos. I watch these after class so i can actually understand. I pay thousands for electrical apprenticeship and the visuals, explanations, and graphics are better than what i have at school. If it wasn't for TH-cam id be failing school. Thanks for being exceptional. College now is a joke.
Awesome video. Although I'm surprised you didn't mention CNC machines since it must be the single most common user of VFDs. The whole automation industry is founded upon the VFD to make variable speed, feed, interpolation, and control possible.
I had a pretty good grasp on all of this except how the final A/C waveform was generated. Makes total sense to me now. I work on vintage electronics in my side business and am about to move to a more complex industrial electrical maintenance role at my day job. It's always fascinating to me to learn about the things the modern transistor has enabled us to accomplish, but I'm also still amazed by what we were able to accomplish before that technology existed.
I'm talking from Bangladesh, this video is very very important for me because i am an engineer and VFD is very uses in my office (factory). Go ahead with confident.... Thank you so much....!!!
I was working in different companies which are usung VFD without a complete knowledge about its function,, now i know so clearly,,, thank you so much for the detailed explanation sir..
The video was great. Some corrections: 3:50 No, the electrons in the windings of the generator don't move because the magnets "push or pull depending of polarity." If that was true, holding the magnet still should also make the electrons move, because the magnets still have its polaritiy; but in real life this doesn't happen. Instead, you need a _changing_ magnetic field (in the case of AC motors and generator, it is a rotating magnetic field.) 5:54 No, in general the coils are not inserted shifted 120 physical degrees (also known as mechanical degrees) into the stator. Actual generators have a lot of windings for each phase, so they phase shift is less than 120° mechanical; you may want to read about Ferrari's theorem. What is true is that the output line-to-line voltrages are each shifted 120 electrical degrees from the other two.
Variable frequency drives couldn't be explained any better than this. It's great to explain to the audience with the perfect video, animations. Thank you for video.
Just let it ripple through your mind. A canned answer is good for smoothing out the gaps. It all depends on what you are filtering - whether content or output.
It's the sign of a master to bring complicated issues back to their essence. Well done. Just curious what all this clever engineering to save electricity does for human health.
Wow, if you had made these videos 20 years ago, I would not have had to go to collage to learn electronics. Just let you come into my computer and teach me at home. GREAT JOB.. and way more clear then collage books..
Collage is a technique of art creation, primarily used in the visual arts, but in music too, by which art results from an assemblage of different forms, thus creating a new whole.
Holy crap, outstanding video! And what a waste of April Fools Day. You could've announced "Electricity 2.0" or something. 😊 Great work again, cheers! AND STAY HEALTHY!
Amazing!! I've used VFDs. I've used diodes, rectifiers, capacitors individually. I've done some DIY AC/DC circuit design. Still going to take a few more views to grasp everything in the video. And then fixing my broken generator/inverter should be easier.
@@chrisnsamba4272 I know they sometimes do this,but it doesnt always work.When i've been involved installing 11KV VSD's, they do a Pre and Post Study. We also have to inform the DNO they are being installed, as it does cause network problems
The filters in VFD's arent efficient enough to block out all harmonics and when you have a bunch of VSD's this can cause a lot of harmonic distortion. To counteract this, passive and active harmonic filters are installed in the circuit and active harmonic filters in parallel with the VFD circuits work best to filter out any harmonics from the VFD's.
I'm an electronics tech, and have worked with these, and similar devices. But, I have to say that a young me would have loved to come across a video like this. The explanation was great.
Generally, yes. The motors and inverters are a bit different in design due to the torque requirements (same in modern electric vehicles) but the same principle applies.
Careful around these, even unplugged you have to wait few minutes (capacitors will discharge) to operate them ( for example for maintenance purposes ).
I can’t be the only one who read “A series of unfortunate events” and coincidentally stumbled upon this coincidentally convenient abbreviation, correct?
Hah, they didn't even teach you how to do taxes nor find edible food in the wild, and now all they teach is how to wear a condom and believe what you see on the television...
I'm a chemical engineer so whenever I'm in meetings with the mech or electric engineers my eyes just tend to glaze over whenever conversations get into duty/support/standby blowers, motor frequencies etc. so this video was super helpful. At least now I'll be able to pretend that I know what they're talking about. Your PLC video is next so I can impress the panel guys with how not-rubbish I am at practical engineering
I'm a Electrician apprentice & even though I don't need to understand how this work, just how to hook it up its still very interesting how the things I install work. Thanks for the videos
thank you 🙏 this is the level of depth I was looking for. When I was introduced to freak drives during my electrical apprenticeship, I understood, but didn’t grasp. The visual aides were mint! Cheers
I have a degree in comp.elctr.engineering technology. Ive worked at Intel mainly as technician for installation and modification of semiconductor equipment in past 5 years. Ive recently applied at UPS for an opening for a Buildings & Systems engineer mechanic....Major work activities for this position include: Troubleshooting, adjusting, and replacing AC and DC electrical equipment such as batteries, control stations, fuses, motor starters, relays, switches, timers, servo driven equipment, Programmable Logic Controllers (PLCs), photo electrical devices, transducers, Variable Frequency Drives (VFDs) and encoders. Inspecting, troubleshooting, repairing, and/or replacing mechanical components such as motors, reducers, drive chains, sprockets, sheaves, pulleys, rollers, conveyor belts, bearings, and transfer plates. Inspecting, troubleshooting, repairing, and/or replacing pneumatic equipment such as diverters, air compressors, lubricators, hoses, and coils. Inspecting, troubleshooting, repairing and/or replacing hydraulic equipment such as hoses, fittings, cylinders, and pumps. Welding equipment such as hand rails, conveyor supports, package handling equipment, carts, and grading. Performing preventive maintenance inspections of plant equipment such as conveyors, bulk carts, and power industrial equipment. I have to take a 25 question test onsight to be considered for the position. What should I know to be prepared for questions related to those duties??? Can you help me ?
This video gives a better depiction than my college years studying electrical engineering. I'm more of a visual learner and till now I didn't exactly understand how a capacitor smooths ripples.
I am a commercial hvac/r technician have been doing hvac/ refrigeration for 6 years love too learn new things want too get a bachelors in mechanical engineering and continue too grow my knowledge I have now been promoted too a facility manager position but kind of like the field more thank you for this explanation love all your videos great knowledge! Have worked on 3 phase motor control panels that send power too centrifugal suction end pumps 7.5 hp and 10 hp condenser and chilled water pumps for 2 racks of 100 tons of cooling each rack with 2 compressors in tandom and the 3rd on its own circuit. Also have a cooling tower we replaced the 25hp motor Baltimore also float switch repairs for fill valve of the condenser water great stuff did many commercial hvac service calls too many different hotels and facilities country clubs fascinated by hvac and mechanical ventilation and heating as well as kitchen equipment heating elements ovens.
Шикарное видео, почему такого не было, когда я учился?) Очень подробное и простое объяснение с максимально простых вещей до сложных. Спасибо за весьма сложную работу и затраченные усилия. Это видео надо рекомендовать каждому, кто постигает электродинамику, особенно детям. Спасибо ещё раз.
We have hundreds in use, I usually change about 1 a week (dirty environment, heat kills them) I started wiring homes at 17, learned how to make electricity work, but at 58 I'm still learning "how". I converted my Lincoln AC220 stick welder to DC. I just picked up a 10hp 3~ air compressor, I'll be buying a VFD to power it from single phase!
⚠️ *This video took weeks to make* Buy Paul a coffee to say thanks: ☕
PayPal: www.paypal.me/TheEngineerinMindset
Videos are VERY well done!!! It is a PLEASURE to donate!
Work worth reward! Brilliant videos
Lim
@@fRoStLIM đ
f n,ldsadv
These videos are like liquid gold to anyone remotely interested in electricity and how it works. The explanation and animations make it so easy to understand
I agree. i knew how 3 phase worked, but now i feel like i know how it works but better.
Absolutely 😊
i cant get enough of them its so great
Indeed 🙌
Amazing Explanation... 👍👍👍👍👍
My mental capacity was at peak crumbling from being frustrated and burned out for hours just before I met this video.
The semester exams kept knocking at my door.
I was almost in tears as I tried to keep seated and watch in this dead of the night.
This video was like a shot of an anti-anxiety medicine.
I couldn't wish for more than this.
You're an angel.
I don't think I've ever seen such an incredible explanation of anything. I mean, that animation was just unbelievable! I knew how a VFD worked... but now I REALLY KNOW. Thanks for all of that, much appreciated guys.
and now i know how a 3 phase rectifier works.
I've taken Physics II, Circuits, and Industrial Electronics classes... this guy did a better job explaining things than the teachers I paid
Qualitatively, yes. But in Engineering, numbers are what drive everything.
This couldn't have been published at a better time. I am a current UMaine electrical engineering student and am about to embark on my senior project, which happens to be a VFD I am constructing with a partner, by ourselves. This video helped tremendously, and we will be sure to give you more than enough credit come presentation time. Thank you so much for this.
UMaine Alumni Unite!
Amazing explanation. We engineers have gone through these lessons during our electrical engineering classses, but never had the opportunity to visualize anything in such perspective. Kudos to the creator.
All I can say is thank you Paul and to whoever else working behind the scenes.
Retired robotic & VFD tech here. Absolutely wonderful video. Its done well for what is needed at this part of the training exercise. Had a great time in Aerospace and “other” government facilities working on so many different things.
I have tried to actually understand this for about 8 years.. this flipped the coin. Thanks a lot!
I know!
تنلمباقيزيعاابويمنظلظ
8 years??? why
It was pretty straight forward if you spent time in tinkering in actual circuit.
@@johnwick5901 who killed your dog?
Very good explanation of VFDs. Not mentioned here, but you can also get a 230v single phase in to 380v three phase out VFD. Extremely useful to allow the use of 3 phase workshop equipment when you only have a single phase supply!
Your videos are amazing. Just throwing this out there. I'm a retired shipyard electrician and something I've seen several times are people mis-wiring tools because they believe that pos and neg switches back and forth such as the light bulb plugged into the receptacle seems to suggest. With that logic, they see no reason to determine which wire in the cord is hot and which is neutral because they believe that AC just switches back and forth. The problem arises when the metal frame of a hand tool becomes energized and they get shocked. It should be noted that at no time is the Earth/Neutral/Ground... side of the circuit 120/240/460...V of a - single/split phase - positive. I love these videos!
God Tier teacher!
I work in a trade school and sometimes it's hard for the students to get a grasp of the material, but these videos explain everything so clearly!
Just, THANK YOU! For all the awesome videos!
Thank you Doru
One of the best videos I've ever seen explaining VFD. It takes some time to explain to technicians at work, and some experience to fully understand it. Will definitely utilize this...
Thank you for posting,
Automation specialist.
Glad you enjoyed and found it useful
This is better than the apprenticeship school. One video is worth more than ten thousand words or pictures. I am a retired electrician who is still learning from TH-cam.
These are absolutely amazing. I already have learned this stuff, but these are absolutely incredible for a refresher and I show it to people interested too and they can grasp most of it as well. Please don’t stop making these videos!!!
Im working in Danfoss authorize distributor company, this help me so much as a service engineer for this inverter
Awesome explanation! I'm currently leading a team that's in charge of designing a groundwater pumping system that will require a rather large centrifugal pump. The area in question only has single phase power available, but powering our pump will likely require 3 phase power. A mentor suggested to us to look into using a VFD. This video really helped me understand the concept and I can't wait to share it with the rest of my team! Thank you!
Oh amazing use. What do you do?
It was very helpful. I studied this circuit in bachelor but did not know the application. Now at work i am working with VFD modules. Thank you for the simpliest explaination.
It would have been nice to have had videos like this when I was in college for engineering. I had to work real hard to pass and now I am a Professional Electrical Engineer
so true.....
I won't lie, when I took a look at a VFD diagram I at first was like, "Nah, a 3-phase AC motor can't be driven by (essentially) a 3-phase DC load/drive." Then after watching this video, I was like, "Welp, I wasn't technically wrong but nor was I right either." After watching the last section of the video I mean on how the IGBTs simulate or get the DC current to behave in a manor that is similar to that of AC. Genius stuff. :)
I work at a package handling place (won't disclose where just because I want to keep my privacy) and my supervisor asked me what I wanted to do and I said, "Well, I want to climb up the ladder in this place" and I was asked if I went to school and I said, "I don't because it'll cost a bit much for what I'm making but I am self-taught" and they asked, "What do you know if you don't mind me asking?" and I was like, "Well..." I looked and I gestured towards the Eaton belt motor and I said, "you see that blue motor that's driving the belt system?" and they nodded, I then went on to explain in a super quick summary that the motor is essentially driven by DC electricity but there is a limitation of how much it can vary the speed and what drawbacks there are too it, like for example if you try to push more voltage into it, it could go faster or it could detriment it or damage the coils. but then again I can be entirely wrong on that statement alone and I feel embarrassed. Can someone correct me just in case if what I said is wrong? I don't market myself as a world genius, I only market myself as a person who just wants to be properly informed and have the correct information on-hand. That and I love to learn new things from computers to auto mechanics. Anyway, my supervisor was just surprised and was like, "Why aren't you in engineering man? You'd be great at that and you wouldn't have to worry about manual labor all that much." And I said with honesty that, "I would love to man, but I'm not certified in that area of expertise because I am self-taught and I can't say that I know everything because I don't. That is why I would like to learn and confirm everything first before I can justifiably say that I am certified. Just covering my bases is all." and the supervisor nodded and said, "Understandable and very honest." He didn't say that to be sarcastic, he said that with sincerity as in, 'I'm glad that you're honest with yourself and others, most would get cocky and wing it.'-sort of thing.
Sorry if this rambling just lead into nonsense, I just love to learn and I love this video. Thank you so much. :)
I really perfect tutorial. No music, no nervous voice, great graphics, good to understand also by people with other mother tongue. Thank you verry much.
True use of TH-cam are channels like these ... A million thanks for the lucid explanation and super helpful animation! 🙏🏽🙏🏽🙏🏽🇮🇳🇮🇳🇮🇳
I wish I would have had these videos to explain everything when I was going to college 20 years ago!! These are awesome, you make it very easy to understand the principles of electricity and how things in our lives work....Cheers guys!!
Absolutely 0 critiques, brilliant job on this video!!!
What an amazing explanation is this? So effective, pure informative and easiest way to explain.
Engineering mindset is my best engineering channel I've seen on TH-cam.
RESPECT MR. PAUL 👍
Your videos are amazing. Even if I have a grasp of the topic, I enjoy your explanation and the videos. Especially because I'm more of a visual person.
Well done video. As a Danfoss rep, I plan to use this for my customers. The only mistake I found in your video is the description starting around the 9:22 mark. The current will be flowing in 3 of the diode except when one of the sine waves crosses zero.
Dear god it's so beautiful.
I had a hard time understanding this topic in our class.
I finally understand it.
Thank youuuuu 😭😭😭💕🎉
What a fantastic Video, Clear Concise and Precise. I am from a Marine and Mechanical Engineering background and videos like this drags us into your world of electrical Engineering.
Your videos (especially this one) are so information rich that I always need to watch more than once. Nice job, I will be buying you a coffee
This is just amazingly explained I am your fan sir😊
I am literally making it through my elevator apprenticeship thanks to you guys. thank you very much
This is video, and all of the videos on this channel, are hands down the most effective learning resources I’ve ever come across, across all subjects I’ve sought knowledge about. I’ve learned more about electricity in the last 30 minutes than I have in the last 3 years of dabbling. Thank you SO MUCH for producing these amazing videos!!
That is the closest I have ever come to understanding something about electricity. Awesome video!
Thanks a lot for this one! Could you please share a source explaining what kind of damage can occur to a VFD or motor if the phases are connected in the incorrect order?
I was literally wondering about these and seconds later I got a notification for this video
Spooky!
Same here. Thank you Paul.
@@dayyk5897 Eureka!
😂
So Google literally reads your mind lol or more likely traces very well your browsing patterns....:-) Then you wonder who is thinking here - you or Google? LOL
Visual Learner Here!!! Thanks. Explanation is spot on. You make it seem effortless> I am booked.
Amazing explanation. Truthfully I'll have to watch it t a couple more times and take notes but still it's great.
This is by far the best channel i ever seen for electrical knowledge. I am super super confusing in electrical engineering, really appreciate your effort to make it more understandable. Really thanks a lot!!!!! good job bro!
Absolutely wonderful, I have been a technician on Elctric Trains for years and never really understood VVVF IGBT etc. Now it mostly makes sense.
I’ve been an Electrician for a long time starting in the USCG but never had the opportunity to learn about “freak drives”. Thank you for the tutorial and I bought you a cup of coffee in appreciation!
Glad you enjoyed and thank you for the support! much appreciated, Bill.
Thats the best video i've ever come across that explains the VFD sequence of opertaion , good job man
I have learned SO MUCH MORE from TH-cam than I ever did in public school...
First I don't know why anyone wouldn't Subscribe to your channel best electronic explanation video that is animated Nice 👍👍
Well done, you're fast
Thanks!
Nice explanation. Just a small correction: From time 4min40sec, I think peak voltage and current has a 90° phase to peak flux, therfore the anmiated electrons are moving at the wrong time. The point of maximum flux should be aligned with zero current (and zero voltage) as dB/dt = 0 during peak flux.
I'm just studying to become a train technician and this video was let's say VERY useful information about the IGBT control over the three phase sinewaves. Thanks a lot! Even our teacher is recommending your channel :)
These videos are awesome. Kudos to the content creator. I have been in the trades for about 5 years and all the schooling I have received left me with gaps in explanations.
Thank you so much for the visual aids in helping to truly understand the basics of electricity.
Thanks for these videos. I watch these after class so i can actually understand. I pay thousands for electrical apprenticeship and the visuals, explanations, and graphics are better than what i have at school. If it wasn't for TH-cam id be failing school. Thanks for being exceptional. College now is a joke.
Superb video as always. I love to nerd out on VFD’s and Wye-Delta starters. Such simple but ingenious methods.
BEST EXPLANATION I'VE HAD! ANIMATION GIVES AN AMAZING PERSPECTIVE, THANKYOU!
Awesome video. Although I'm surprised you didn't mention CNC machines since it must be the single most common user of VFDs. The whole automation industry is founded upon the VFD to make variable speed, feed, interpolation, and control possible.
I just stumbled across this video, Immediately subscribed.
As an electrical engineer, this is brain candy.
I had a pretty good grasp on all of this except how the final A/C waveform was generated. Makes total sense to me now.
I work on vintage electronics in my side business and am about to move to a more complex industrial electrical maintenance role at my day job. It's always fascinating to me to learn about the things the modern transistor has enabled us to accomplish, but I'm also still amazed by what we were able to accomplish before that technology existed.
I'm talking from Bangladesh, this video is very very important for me because i am an engineer and VFD is very uses in my office (factory).
Go ahead with confident....
Thank you so much....!!!
Holy s**t!this video made me understand what I've been trying to learn for at least a decade.
I was working in different companies which are usung VFD without a complete knowledge about its function,, now i know so clearly,,, thank you so much for the detailed explanation sir..
The video was great. Some corrections:
3:50 No, the electrons in the windings of the generator don't move because the magnets "push or pull depending of polarity." If that was true, holding the magnet still should also make the electrons move, because the magnets still have its polaritiy; but in real life this doesn't happen. Instead, you need a _changing_ magnetic field (in the case of AC motors and generator, it is a rotating magnetic field.)
5:54 No, in general the coils are not inserted shifted 120 physical degrees (also known as mechanical degrees) into the stator. Actual generators have a lot of windings for each phase, so they phase shift is less than 120° mechanical; you may want to read about Ferrari's theorem. What is true is that the output line-to-line voltrages are each shifted 120 electrical degrees from the other two.
Variable frequency drives couldn't be explained any better than this. It's great to explain to the audience with the perfect video, animations. Thank you for video.
Gonna have to watch this a few times to smooth out the gaps in my comprehension.
Just let it ripple through your mind. A canned answer is good for smoothing out the gaps. It all depends on what you are filtering - whether content or output.
you are very pedagogical in your explanations. You are amazing!
Amazing Video!
The animations and the content are perfeclty fitting together to make it understandable and interesting to watch, great Job again.
It's the sign of a master to bring complicated issues back to their essence. Well done. Just curious what all this clever engineering to save electricity does for human health.
Very true!
New to the channel & I'm loving it, ❤️❤️❤️ Thank you for the amazing videos ❤️
Wow, if you had made these videos 20 years ago, I would not have had to go to collage to learn electronics. Just let you come into my computer and teach me at home. GREAT JOB.. and way more clear then collage books..
Collage is a technique of art creation, primarily used in the visual arts, but in music too, by which art results from an assemblage of different forms, thus creating a new whole.
the world is quiet here
real
I’m here with yall, we got this
Sssshhhhhh
It's 7:55AM. I'm happy I learned something new this early in the day
Holy crap, outstanding video!
And what a waste of April Fools Day. You could've announced "Electricity 2.0" or something. 😊
Great work again, cheers! AND STAY HEALTHY!
Glad you enjoyed. You're so right, wasted opportunity. I'll plan for next year!
This channel is so good. I watch these every day at lunch.
7:11 gives me the idea that I’ll be able to find simple inverter like the diy type in my ac compressor circuit board
Yes🔥
I had never viewed such an amazing illustration in my life, thank you very much Sir
Excelente aula, parabéns amigo.
Amazing!! I've used VFDs. I've used diodes, rectifiers, capacitors individually. I've done some DIY AC/DC circuit design. Still going to take a few more views to grasp everything in the video. And then fixing my broken generator/inverter should be easier.
How are the Harmonics controlled, that can be reflected back into supply, by using this process?
Filters and dampers which are just more advanced electronics integrated into the circuit. Maybe we will cover in an advanced video on the topic
A video on harmonic distortion would be awesome 👍
Normally, an inductor is connected just btn the rectifier cct and the DC bus.... It acts as a choke for harmonics
@@chrisnsamba4272 I know they sometimes do this,but it doesnt always work.When i've been involved installing 11KV VSD's, they do a Pre and Post Study. We also have to inform the DNO they are being installed, as it does cause network problems
The filters in VFD's arent efficient enough to block out all harmonics and when you have a bunch of VSD's this can cause a lot of harmonic distortion. To counteract this, passive and active harmonic filters are installed in the circuit and active harmonic filters in parallel with the VFD circuits work best to filter out any harmonics from the VFD's.
I'm an electronics tech, and have worked with these, and similar devices. But, I have to say that a young me would have loved to come across a video like this. The explanation was great.
Is this how they control the speed of modern electric trains, and what is the swishing sound from the control circuits on rail traction
Generally, yes. The motors and inverters are a bit different in design due to the torque requirements (same in modern electric vehicles) but the same principle applies.
@@JakeRoeder Thanks Jake. and the swishing must be the fast switching of the huge current
I was wondering the same. Aspiring train technician here :)
One Of The Best Technical Education Technical Information Videos I have ever Watched .Many Thanks and Best Regards
Careful around these, even unplugged you have to wait few minutes (capacitors will discharge) to operate them ( for example for maintenance purposes ).
Yes usually a 10min wait before attempting work!
Or you can connect a resistor to the capacitor for it to discharge quickly
Discharge time is equal to the resistance of the circuit multiplied by the capacitance or T=R×C if i remember my schooling 🤣
@@justinkern1804 how do you get C?
@@D1amondeyes capacitance
2 years of electrical engineering in college and this explains it better then any prof I had
I can’t be the only one who read “A series of unfortunate events” and coincidentally stumbled upon this coincidentally convenient abbreviation, correct?
Thank you for your hardwork. This has made so many electrical based education so much more fascinating!
It's sad that I didn't have these explanations 15 years ago at school
Hah, they didn't even teach you how to do taxes nor find edible food in the wild, and now all they teach is how to wear a condom and believe what you see on the television...
I'm a chemical engineer so whenever I'm in meetings with the mech or electric engineers my eyes just tend to glaze over whenever conversations get into duty/support/standby blowers, motor frequencies etc. so this video was super helpful. At least now I'll be able to pretend that I know what they're talking about. Your PLC video is next so I can impress the panel guys with how not-rubbish I am at practical engineering
Sir, its too much explained, a child can becoming engineer after observing 5 times.
guess my age when i start watching this channel : )
Oops experience difference it's too difficult
*can become
@@46ryngd46 🤔
you never taught kids, did you?
I'm a Electrician apprentice & even though I don't need to understand how this work, just how to hook it up its still very interesting how the things I install work. Thanks for the videos
good tactic heh, i was sure there is an april fools joke in it somewhere and because i'm a beginner i wouldn't get it, so i paid extra attention
Next April, I'll get a fools day video out!
thank you 🙏 this is the level of depth I was looking for. When I was introduced to freak drives during my electrical apprenticeship, I understood, but didn’t grasp. The visual aides were mint! Cheers
I have a degree in comp.elctr.engineering technology. Ive worked at Intel mainly as technician for installation and modification of semiconductor equipment in past 5 years. Ive recently applied at UPS for an opening for a Buildings & Systems engineer mechanic....Major work activities for this position include:
Troubleshooting, adjusting, and replacing AC and DC electrical equipment such as batteries, control stations, fuses, motor starters, relays, switches, timers, servo driven equipment, Programmable Logic Controllers (PLCs), photo electrical devices, transducers, Variable Frequency Drives (VFDs) and encoders.
Inspecting, troubleshooting, repairing, and/or replacing mechanical components such as motors, reducers, drive chains, sprockets, sheaves, pulleys, rollers, conveyor belts, bearings, and transfer plates.
Inspecting, troubleshooting, repairing, and/or replacing pneumatic equipment such as diverters, air compressors, lubricators, hoses, and coils.
Inspecting, troubleshooting, repairing and/or replacing hydraulic equipment such as hoses, fittings, cylinders, and pumps.
Welding equipment such as hand rails, conveyor supports, package handling equipment, carts, and grading.
Performing preventive maintenance inspections of plant equipment such as conveyors, bulk carts, and power industrial equipment.
I have to take a 25 question test onsight to be considered for the position. What should I know to be prepared for questions related to those duties??? Can you help me ?
Check our new Servo video out: th-cam.com/video/1WnGv-DPexc/w-d-xo.html
Your channel is a gold mine sir!
Amazing explanation! The best channel on youtube!
This video gives a better depiction than my college years studying electrical engineering. I'm more of a visual learner and till now I didn't exactly understand how a capacitor smooths ripples.
I am a commercial hvac/r technician have been doing hvac/ refrigeration for 6 years love too learn new things want too get a bachelors in mechanical engineering and continue too grow my knowledge I have now been promoted too a facility manager position but kind of like the field more thank you for this explanation love all your videos great knowledge! Have worked on 3 phase motor control panels that send power too centrifugal suction end pumps 7.5 hp and 10 hp condenser and chilled water pumps for 2 racks of 100 tons of cooling each rack with 2 compressors in tandom and the 3rd on its own circuit. Also have a cooling tower we replaced the 25hp motor Baltimore also float switch repairs for fill valve of the condenser water great stuff did many commercial hvac service calls too many different hotels and facilities country clubs fascinated by hvac and mechanical ventilation and heating as well as kitchen equipment heating elements ovens.
See our new video on how to build mechanical versions of electronic circuits? Watch here: th-cam.com/video/Zv9Q7ih48Uc/w-d-xo.html
You guys are the absolute best!! Your videos are so clear and easy to understand! Thank you!
Шикарное видео, почему такого не было, когда я учился?) Очень подробное и простое объяснение с максимально простых вещей до сложных. Спасибо за весьма сложную работу и затраченные усилия. Это видео надо рекомендовать каждому, кто постигает электродинамику, особенно детям. Спасибо ещё раз.
Superb. The difference between 'Explaining' and 'Describing'...
We have hundreds in use, I usually change about 1 a week (dirty environment, heat kills them) I started wiring homes at 17, learned how to make electricity work, but at 58 I'm still learning "how". I converted my Lincoln AC220 stick welder to DC. I just picked up a 10hp 3~ air compressor, I'll be buying a VFD to power it from single phase!
Best video on VFD ever!