All electrical engineers of the world should get together and pay this gentleman a million dollars a month to explain every topic of every course needed for a master's degree. Then, we could retire all other living professors, starting from my lazy professors.
Man, speaking as a person from a non-english speaking country, I must congratulate you for the very paused and clear pronunciation of the words. Beyond that, the high value content and the masterful way in which the subject was explained! Congrats!
I am working in ABB as drives quotation specialist but believe me I have not come across such detailed explanations on THD/TDD and mitigation options... hats off to you sir!
yaskawa is very sincere manufacturer , even in eighties i have seen a yaskawa motor which did not require any regular maintenance at that time compared to other brands . liquid starter never gave trouble for 8 years in a row , and was free from dust in our heavy dusty environment @ a cement plant .
OMG !!! after a long time struggling and searching, this is the only video that answered my question and gave good understanding of it. Million thanks to him. So, nice lecture (but not really the way of traditional lecture though). Once again thanks a lot.
This explanation was so beautifull that I lerned something about harminics mitigation in large power generators. And i was looking for harmonic distortion in audio amplifiers. Great work indeed. Really interesting. Thanks.
A correction @ 3:00. Not all linear loads draw a sinusoidal steady-state current when the voltage is sinusoidal. As an example, a resistor whose resistance is a function of time (but not of voltage nor current), is a linear resistor, yet it will draw non-sinusoidal current when a sinusoidal voltage is applied. The most accurate and general definition of a linear load/device/system is that whose relation between voltage and current follows the superposition principle.
ok ok, i watched this video 4 years ago and really like this drive harmonics video... however, what new drives are there in 2020, not needing reactors and the like? thanks...:)
A well done work is timeless. 9 year old instructional video and still awesome! The TDD table meant for point of common coupling was indeed used by PQ specialists within load side facilities because they give a good reference point. You just need to be aware of how you interpret the results.
Such a phenomenal video. I have more questions now than when I started the video, but that's because the topic was covered so well, that it made me realize how much more I need to know about Harmonics, IGBT's, EMI Filters, etc. I am particularly interested in how the drive provides regeneration @ 21:30 Thanks so much for providing us with such great instructional videos.
To purchase AFE (Active Front End) and active filters, please visit the Yaskawa website and select the nearest service provider in your area using the following link: www.yaskawa-global.com/company/profile/global
"What kinds of harmonics do variable speed drives create? Well, it depends." Now that is definitive for you! How's about this: Just like with other loads, variable speed drives distort the input wave causing harmonics. The ANGLE that the input wave was at when it impacted the distortion determines which harmonics are created and the pattern of harmonics created in the spectrum. This pattern is known as the Harmonic Signature, and the Bullard Harmonic Solution can be used to predict the harmonic signature based only on the angle that the incoming sinusoid was at when it impacted the distortion. This is Law #2 of the Bullard Laws of Harmonics. Different devices (VFD, fluorescent lights, rectifiers, etc) have distortions lurking at various voltage thresholds and when the incoming wave impacts those thresholds, it distorts the wave and the angle at which that happens determines the harmonic signature. God did not anticipate which electronic devices mankind might invent and then devise a set of harmonics for each and every human invention.
hello, can you give me an idea why my circuit breaker frequently trip and becoming hot even at normal current. i have a circuit breaker installed after my vfd drives. how to solve this problem for those who experience this?
The output of the Yaskawa VFD has a near sinusoidal output current wave form, and a pwm output voltage wave form. A pwm waveform will cause a small amount of additional heating in the motor because it is shaped like a square DC pulse and the near sinusoidal current waveform can cause additonal heating as well. So this is most likely the culprit of the heat in the circuit breaker. You can read more about a pwm wave form in this article. www.yaskawa.com/pycprd/newsdetails/item&common-vfd-myths-1508 One note. Yaskawa VFDs have accurate motor overload protection and a very fast acting over current protection built into each model. No external overload device is required as long as you are not running multiple motors from one drive.
sir, the set up of it is two interlock rotary motor driven by one vfd only. it is a diversion valve application w/ interlocking. the advice of the designer is to shift w/ thermal circuit breaker instead of electro-thermal circuit breaker but still occurrence of problem. thanks for the advice.
+Yaskawa America The output of the any VFD has a near sinusoidal output current wave form, but not input. You may need afe (active front end) input in VFD.
Thank you for your interest in "Harmonics." Please contact our Technical Support at: www.yaskawa.com/support-training/support or your local Yaskawa Service Provider - www.yaskawa-global.com/company/profile/global with more information on your application.
Hands down the best explanation of harmonics on the internet for all electrical disciplines & skill levels. Thanks Steve & Yaskawa!
Xoxo 😘
All electrical engineers of the world should get together and pay this gentleman a million dollars a month to explain every topic of every course needed for a master's degree. Then, we could retire all other living professors, starting from my lazy professors.
Agreed
Man, speaking as a person from a non-english speaking country, I must congratulate you for the very paused and clear pronunciation of the words. Beyond that, the high value content and the masterful way in which the subject was explained! Congrats!
such a professional presenter is highly required nowadays.
Thank you, sir, this was so informative and compact.
One of the best videos on TH-cam ever. Period!
Excellent presentation with a clear voice for non-native English speakers....Thank you!
Excellent tutorial! Very clear, concise, and precise. I wish more engineers would talk like this :)
Thank you, Training Manager, @ Yaskawa for teaching complex subject in simple language
OMG! Best explanation on power distortion!!!!! So simple, yet so elegant! Thank you so much for the upload!
I am working in ABB as drives quotation specialist but believe me I have not come across such detailed explanations on THD/TDD and mitigation options... hats off to you sir!
@Zaheer Ahmed Sir are you from ABB Bangalore?
Thank you for your insight. I have been forwarding the video to clients so that they can understand what they pay for.
Best Harmonics explanation for beginner !!!!! on internet world
What a magnificent description and presentation. Thank you.
Steve must be one of the best instructers ever. No sleeping in his class.
You are the best tutor in the world.
yaskawa is very sincere manufacturer , even in eighties i have seen a yaskawa motor which did not require any regular maintenance at that time compared to other brands . liquid starter never gave trouble for 8 years in a row , and was free from dust in our heavy dusty environment @ a cement plant .
"AFE uses IGBT to reduce THD in VFD, OMG!!" : Loved the part
OMG... Give that man a raise!
Best explanation on harmonics i have ever come across...amazing work
Listening to this with an epic musical score in the background makes it so much cooler.
I have seen 18 pulse drives in the mining industry where motors go up to or more than 33MW. Great lecture
Oscar for this guy plz
Best lecture ever
OMG
Agreed
Mr. Steeve your style of teaching is very excellent
OMG !!! after a long time struggling and searching, this is the only video that answered my question and gave good understanding of it. Million thanks to him. So, nice lecture (but not really the way of traditional lecture though). Once again thanks a lot.
Best teacher I ever seen
Best Explanation and clearly mentioned all points....👏👏👏👏
Omg wat an amazing explanation., best TH-cam award goes to this ☝️
This explanation was so beautifull that I lerned something about harminics mitigation in large power generators. And i was looking for harmonic distortion in audio amplifiers. Great work indeed. Really interesting. Thanks.
You're are a great lecturer.... Thanks yaskawa
A lot better lecture than my top university professor
Wonderfully presented!
Unquestionably excellent quality. In India, any job possibility. Grateful to join yaskawa. Kudos
Very nice and beautiful explanation to understand and to mitigate Harmonics. Thank you Sir,we expect more such analysis.,🙏
These educational videos are a great overview, thanks.
We are glad that you think so!
A correction @ 3:00. Not all linear loads draw a sinusoidal steady-state current when the voltage is sinusoidal. As an example, a resistor whose resistance is a function of time (but not of voltage nor current), is a linear resistor, yet it will draw non-sinusoidal current when a sinusoidal voltage is applied.
The most accurate and general definition of a linear load/device/system is that whose relation between voltage and current follows the superposition principle.
Not time, but temperature
Rt= R0(1+alpha(t-t0))
@@tamilchelvanramasamy8733 That’d be non-linear, since temperature is a function of current.
Thanks for the training video and clarification of sound travel and electricity. Very informative.
Goat content. Fantastic. Very much appreciated sir!
Very clear and easy to follow, great presentation style - well worth the watch (and re watch).
Complete and ideas flow very well. Thank you Yaskawa.
Excellent presenter and the material covers all
Good and clear vision on Harmonics very useful
ok ok, i watched this video 4 years ago and really like this drive harmonics video... however, what new drives are there in 2020, not needing reactors and the like? thanks...:)
Thank you for this video.Great explanation hope we will get more videos like that.
Thank you Sir for your explanation about the harmonic problem in the network power system
A well done work is timeless. 9 year old instructional video and still awesome! The TDD table meant for point of common coupling was indeed used by PQ specialists within load side facilities because they give a good reference point. You just need to be aware of how you interpret the results.
thank you very much for the great presentation.
Such a phenomenal video. I have more questions now than when I started the video, but that's because the topic was covered so well, that it made me realize how much more I need to know about Harmonics, IGBT's, EMI Filters, etc. I am particularly interested in how the drive provides regeneration @ 21:30 Thanks so much for providing us with such great instructional videos.
Thanks for your interest! Additional support and training options are available. Learn more: www.yaskawa.com/support-training
Pete vree you doing same thing this gentleman doing I mean teaching us science because of that thank you and keep going please
Thank you... Perfect explications.... From Algeria...
Excellent presentation! Well done, with great visuals!
Thanks for making this video. I found it very helpful!!
a very good brief on harmonics
Nice and clear with proper reference
superb lecture ,can i get ppt of this lecture
t
Excelente informacion, todo queda bastante claro.... thanks!
amazing explanation skills.... thanks a ton for your class
Dear Sir , thank you for making me understand in detailed harmonics. I would like to know how to get AFE and active filters to purchase
To purchase AFE (Active Front End) and active filters, please visit the Yaskawa website and select the nearest service provider in your area using the following link: www.yaskawa-global.com/company/profile/global
Excellent trainer. Thanks a lot mate
Very good and clear presentation. I worked out most of this before seeing this vid - which would have made things a lot quicker!
best explanation for harmonics.thankyou
Thanks for very clear, fluent and efficient explanation for Harmonics.
Sir continue to electrical lecturer Ur teaching in excellent and better life students
Bro you didn't get it??? It's an advertisement of yaskawa. They are provided their own solution to mitigate harmonics generated by VFD
Excellent steady explanation sir
Thank You
great comprehensive presentation !!
Good presentation on harmonics.
Best representation ever!!!
Very good lecture
Thank you
"What kinds of harmonics do variable speed drives create? Well, it depends." Now that is definitive for you! How's about this: Just like with other loads, variable speed drives distort the input wave causing harmonics. The ANGLE that the input wave was at when it impacted the distortion determines which harmonics are created and the pattern of harmonics created in the spectrum. This pattern is known as the Harmonic Signature, and the Bullard Harmonic Solution can be used to predict the harmonic signature based only on the angle that the incoming sinusoid was at when it impacted the distortion. This is Law #2 of the Bullard Laws of Harmonics. Different devices (VFD, fluorescent lights, rectifiers, etc) have distortions lurking at various voltage thresholds and when the incoming wave impacts those thresholds, it distorts the wave and the angle at which that happens determines the harmonic signature. God did not anticipate which electronic devices mankind might invent and then devise a set of harmonics for each and every human invention.
Excellent lecture for basic understanding
Great video, thanks for the upload.
Best explained #PowerLearningChannel
Brilliant video!
i want to know more about active VAR compensation
Loved it ❤️
Is any training online course for electrical engineering
Thanks a lot.. this reminds me the old school!!!
Thanks for that. This is something very interesting.
Wonderful lecture!
7:52 and music theory teachers, as its the same concept, and i imagine where the term "harmonics" came from.
as the lecture for the inductive motors, this one is as well very good. congrats:)
The best harmonic explainantion❤
I am become a fan of this gentleman
Excellent information , well done YEA
hello, can you give me an idea why my circuit breaker frequently trip and becoming hot even at normal current. i have a circuit breaker installed after my vfd drives. how to solve this problem for those who experience this?
The output of the Yaskawa VFD has a near sinusoidal output current wave form, and a pwm output voltage wave form. A pwm waveform will cause a small amount of additional heating in the motor because it is shaped like a square DC pulse and the near sinusoidal current waveform can cause additonal heating as well. So this is most likely the culprit of the heat in the circuit breaker. You can read more about a pwm wave form in this article.
www.yaskawa.com/pycprd/newsdetails/item&common-vfd-myths-1508
One note. Yaskawa VFDs have accurate motor overload protection and a very fast acting over current protection built into each model. No external overload device is required as long as you are not running multiple motors from one drive.
sir, the set up of it is two interlock rotary motor driven by one vfd only. it is a diversion valve application w/ interlocking. the advice of the designer is to shift w/ thermal circuit breaker instead of electro-thermal circuit breaker but still occurrence of problem. thanks for the advice.
+Yaskawa America The output of the any VFD has a near sinusoidal output current wave form, but not input. You may need afe (active front end) input in VFD.
fantastic way to explain the invisible giant ................
Very good explanation!
How much THDV & THDI is more in a steel plant? Please answer me.
Thank you for your interest in "Harmonics." Please contact our Technical Support at: www.yaskawa.com/support-training/support or your local Yaskawa Service Provider - www.yaskawa-global.com/company/profile/global with more information on your application.
@@YaskawaAmerica Thank you for your reply, I have sent email to your technical support department with required data.
Thank you, sir. Very good video!
Very good information. Keep the videos coming.
Excellent
It's very Informative
Very use full ..... Thank you..........
Excellent lecture . Thank you
I appreciate this is the lesson about harmonic....
Hi, I like your lecture
Thank mr but I want improve that by neutral you can help me
Amazing explanation sir
21:48-21:58
What is the v.f.c
thank you
Thank you for watching our video on Harmonics. For further assistance can you please email us your question at Technical_Support@yaskawa.com
very good presentation
the good information for me! thanks