Variable Frequency Drives Explained - VFD Basics IGBT inverter
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- Опубликовано: 31 мар 2020
- Variable Frequency Drives Explained - VFD basics. In this video we take a look at variable frequency drives to understand how they work in electrical engineering and power electronics. We look at where and why to use a VFD or VSD, alternating current, direct current, single phase, three phase, frequency, rectifier, DC bus, inverter, capacitor, pwm, pulse width modulation.
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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.
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?
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!
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!
All I can say is thank you Paul and to whoever else working behind the scenes.
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.
Im working in Danfoss authorize distributor company, this help me so much as a service engineer for this inverter
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 RUclips.
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!!!
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.
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.
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.
the world is quiet here
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.
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!!
True use of RUclips are channels like these ... A million thanks for the lucid explanation and super helpful animation! 🙏🏽🙏🏽🙏🏽🇮🇳🇮🇳🇮🇳
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!
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.....
Absolutely 0 critiques, brilliant job on this video!!!
It's 7:55AM. I'm happy I learned something new this early in the day
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
Absolutely wonderful, I have been a technician on Elctric Trains for years and never really understood VVVF IGBT etc. Now it mostly makes sense.
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.
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.
Dear god it's so beautiful.
I had a hard time understanding this topic in our class.
I finally understand it.
Thank youuuuu 😭😭😭💕🎉
What an amazing explanation is this? So effective, pure informative and easiest way to explain.
Amazing Video!
The animations and the content are perfeclty fitting together to make it understandable and interesting to watch, great Job again.
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
Thats the best video i've ever come across that explains the VFD sequence of opertaion , good job man
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?
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 :)
I had never viewed such an amazing illustration in my life, thank you very much Sir
Amazing explanation. Truthfully I'll have to watch it t a couple more times and take notes but still it's great.
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.
Thank you Paul for this video. I'm trying to build a 25vac 3 phase 400hz supply for a Bendix HSI and this educational video is the kind of video I wish I had been able to see a long time ago. Your explanation is among the best tutorial I've ever seen on any subject.
why don't schools teach like this, you make it so easy to understand thank you.
Superb video as always. I love to nerd out on VFD’s and Wye-Delta starters. Such simple but ingenious methods.
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.
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.
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. :)
That is the closest I have ever come to understanding something about electricity. Awesome video!
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.
Superb. The difference between 'Explaining' and 'Describing'...
Great explanation! I work with these kind of drives in an industrial setting almost daily, but I never thought about what goes on in one of those things.
New to the channel & I'm loving it, ❤️❤️❤️ Thank you for the amazing videos ❤️
I am literally making it through my elevator apprenticeship thanks to you guys. thank you very much
I have learned SO MUCH MORE from RUclips than I ever did in public school...
Visual Learner Here!!! Thanks. Explanation is spot on. You make it seem effortless> I am booked.
Excelente aula, parabéns amigo.
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....!!!
This is the best video I have seen ever seen illustrating the VFD .
Good on you
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
Holy s**t!this video made me understand what I've been trying to learn for at least a decade.
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
Thank you so much for your video! I learnt a lot from your beautiful animation! Hopefully the students in university can use these to help them to understand better how electricity works. Kudos!
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
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.
WOW, really WOW! In my whole studying time I haven't understood this principle but your video was really really helpful! Thanks a lot!
The explanation is great. Even if you have an idea of the concepts, the video helps to cement them in your mind even better because of the great animations. Thank you.
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🔥
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.
I just stumbled across this video, Immediately subscribed.
As an electrical engineer, this is brain candy.
So, it has helped me a lot, I am new to electrical engineering, saved my time to understand the basic concept how it works.
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!
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.
Dude, thank you so much for this. Your videos have helped me understand so much more than I thought I could.
I can’t be the only one who read “A series of unfortunate events” and coincidentally stumbled upon this coincidentally convenient abbreviation, correct?
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!
am from uganda and am so interested in this teaching leasons about vfd and am picking up slowly slowly ,very nice explanation
Your videos have High quality content,
With simple explanation! I appreciate the work you put in. Thank you.
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 :)
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.
Ur videos are seriously amazing. Thanks for all the time, effort, and great explanations you give.
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.
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...
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
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.
Best video of the day. Thanks for the wonderful demonstration of the current flow.
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!
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 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: ruclips.net/video/1WnGv-DPexc/видео.html
This explains it better to me, than my teacher does, and english is not my first language!
what a quality of the animation...congrats. again one of the best video from eng mindset. thanks
This is brilliant, thank you. We use variable frequency drives in elevator motors so really good to understand the basic principles.
Your videos are extremely detailed for the length. Nice work!!
One Of The Best Technical Education Technical Information Videos I have ever Watched .Many Thanks and Best Regards
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.
Excellent video! First time I got a good explanation and understanding of the principle VFD's, thank you!
Absolutely perfect, a complex thing made so easy to understand. I rarely comment on anything, but this is top notch, very grateful. Liked and subscribed, will check out the rest to.
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..
super freakin awesome!! now i not only understand vfd but how a circuit works too in ac flow..
Such an amazing video !
You explained right from start to the end.
One of the best videos I've seen on youtube. Suscribed!
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.