Power Factor Explained - The basics what is power factor pf
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- เผยแพร่เมื่อ 6 มิ.ย. 2024
- What is power factor? In this video we learn all about power factor starting at the basics. We cover, what is power factor, what is good and bad power factor, how to fix bad power factor, what is leading power factor, what is lagging power factor, how capacitors, inductors and resistors affect circuits as well as how to calculate the power factor correction.
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Please keep on ...your channel one of best I watch on TH-cam
Know what Ether is buddy all the best
@@MrAbdalla915 can u suggest any TH-cam channel like this one which i can subscribe for Electrical Engineering???
Awesome
I just lost here
I'm an electrical engineer of 30 years and I'm telling you now I couldn't think of a better source of engineering information than this channel. Its so well put together and explanations are (99.9%) of the time spot on. Paul, I've said it before I wish you were my college lecturer many moons ago! Keep up the good work
How can you be an electrical engineer for 30 yrs and not know these fundamental electricity concepts?
@@borysnijinski331 I didn't say I didn't know them
QQ: This video stops at the calculation of the leading-factor apparent power that has to be introduced by capacitive loads. How would one go from this stopping point to figuring the amount of capacitance one must introduce into the system in order to introduce the correct amount of power factor correction into the system?
I don't even bother watching my lectures anymore, i just lookup the topic and find someone that can explain it 50x better!
@@borysnijinski331 😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂😂
Hello Paul,
I spent 8 hours today trying to learn Power Factor from my course notes and text book. Became really highly frustrated because nothing made any sense.
Then I watched and studied your videos. I first went through Resistance, Capacitors, Inductors and Induction Motors and then I did your entire Power Factor Video including all calcs.
I starting with your videos at 22.00 on Monday night. Its now 03.34 on Tuesday morning and I can now say that I have mastered Power Factor.
WITH ALL MY HEART, THANK YOU PAUL. YOU ARE MY SUPER-HERO.
Your Videos are super fantastic. Please keep up the Excellent work!
Regards,
Rajan.
South Africa
buy him a coffee some day ! Cheers !
That was probably the best layperson's explanation of power factor, kvars, etc. Many years ago I was brought in to work on an inductive furnace, used to melt aluminum. The system was driven by a motor-generator. On the control panel was a meter labeled KVARS, part of the scale was in RED. We were getting readings in the red, I didn't understand why. We also had a bank of capacitors that could be switched in and out. I spoke with one of our proffesors and he gave me a very good explanation. What we found is that some of the switch contacts on the capacitor bank were worn out and we were unable to change the PF. The switch said we were adding capacitors but in reality, we were not.
Having taking power quality classes since, what has changed in a building is the type of load. Much of it today is from switching power supplies in computer equipment, also many of the motors used in HVAC are soft start and variable frequency. One obvious clue is to feel the temperature of the power panel, as the PF drops, the panel gets warmer, from the losses, and we pay for it.
I wish I saw this video 30 years ago, very good. Jim
30 years ago? TH-cam started in 2005 and therefore didn't exist in 1991. Neither did the Internet. Well the Internet did exist in 1991 but was only seen in educational environments for a bit before it started taking off significantly in the public space in 1993/1994. In those early days, downloading a video the size seen on TH-cam today would have been unfathomable on dialup where it took about 10 minutes to download 1MB.
@@privacyvalued4134I think you may have misread his comment. He wrote “I WISH I saw this video 30 years ago…”
I used to work in PFC, and this way of explaining the problem, and solutions is first class. It is hard for a non electrical engineer to understand the concept, but most people could get some understanding from this video. Regards.
I'm an Electrical Engineer, and I explained this concept many times. I find this is one of the best descriptions.
Ok, so after reading dozens of text books I've come to the conclusion this is the best channel for me to watch and actually understand concepts.
I WISH I'd have had vids like this back when I was a kid trying to internalize information from various text books on these subjects. MUCH more intuitive than the abstract stuff you get from ink-and-paper. God bless you!!!
Mate such a legend. Your lessons are amazing. Such a good teacher as well. Keep them videos coming please.
This 10 minute video, explained it better than my 2 hour lecture did.
I am a newly graduated Electrical Engineer and this videos are amazing, simple yet very pertinent information and explanations, keep up the good work!
Learn how *THREE PHASE ELECTRICITY* works here ➡️ th-cam.com/video/qthuFLNSrlg/w-d-xo.html
It is the first time someone makes electricity easy to understand for me. Thank you!
Thank you so much Paul for these amazing explanations! Most text books are super confusing but you've managed to find a way to make these easy to learn!
I spent almost half a day to find the exact video that i wanted. Awesome ! Hats off to your work !
Man! You have cleared my vision.no one here to explain like this.upload more and more video .you have great knowledge with ease of teaching.
This may be the single best electrical engineering video I have ever seen. Such a clear and practical explanation of what is one of the most complex but fundamental concepts in electricity. Love this.
One of the best explanations I have seen yet, well done!
Your analogies really are helping picture these concepts.
Thanks for the time invested in making these videos !
This video cleared my concept of power factor. Before this, I was always confused and ambiguous. Thank you for these elaborative videos and keep it going. This channel is God sent literally
honestly, best ever explanation of power factor for me was that example with a beer glass.. so simple, yet so precise... kudos to you!
I found TH-cam channels better than my Electrical teachers
Thank you for the good explanation
I'm a simple man...I see a glass of beer in the thumbnail and I click it.
WOW WHAT A TRUTH TELLER ......SO YOU MAY DOUBLE CLICK IN CASE OF BLUE LABEL WHISKY
Same
Same
Simply good power factor 🍺 beer..
Indeed sir, indeed.
Thank you, I’m trying to learn about power factor, I work in an industrial plant and we deal with it for induction and synchronous motors. This is good information.
Buy an UGLYS book it has all this in it!!!and the code.
The best explanation that I have ever seen!!! 1000 BRAVO
Magnificent! I have no background in electrical engineering and I work for an electric vehicle charger company. Stuff like this really helps me look smarter in front of customers and explained way better than I could find anywhere else!
This is the best way I've seen power factor and VARs explained. The beer analogy was genius. I tried to explain power factor and VARs to someone and found it difficult to lay out the concept without getting into inductive and capacitive reactance. The beer analogy cuts through all of that into a digestible concept for the average person.
Wow you sparked my interest in science.
Koooooool, science is GR8. I don't even know if they teach it anymore. any kind of
science the 3 classes of levers, torque /speed, We had a gr8 science teacher, he
had an old telephone magneto from the Beverly Hillbillies . hookt it to a lamp.
and unscrewed the bulb. magneto was easy to turn quickly. once the bulb was in
the circuit, well friend, more torque needed as the current flowin thru lamp, also
flowed thru armature in magneto. all those turns of wire made the armature an
electro-magnet and its poles were attracted to the field magnets, that is why there
was a 'drag' effect cuz work was being done. It shows from the 1st half of the experiment when lamp was not on and if a voltmeter were hookt across the lamp
you would have seen the volts the mag was putting out, yet was e.z. to crank.
then when lamp was lit, the work it took to lite it. so amps is the electrical
equivalent of TORQUE and volts, the electrical equivalent of SPEED. Hope this helps
you understand a bit more of science.
The concept of the Power Factor has been very well explained. I hope that electronics engineers from our school find this channel. :)
I hope there’s video like this during my college years. Studied about lead lag but don’t have an idea what it’s for.
you are a live saver, i didnt comprehend alot of the basics before seeing your animations...
Very comprehensive video. Thank you
thank you i really appreciate what u guys are doing for us we the young engineers of today after watching numerous of your videos i now understand what my lecturer means in the class room
Outstanding, one of the best presented graphical and methodology topics I have viewed
Great stuff! Much better than all these low grade tech "learning" videos on TH-cam, most of which come out of India.
I'm very thankful on how well you explain the concept as now even though I'm currently struggling in my circuits course, I'm able to realize and connect different concepts in an ac circuit especially about this power factor. Kudos to you and look forward to watching more of your videos.
Great videos of yours, I appreciate deeply each one of them. I've found the animations particularly descriptive, much more than all the drawings I could see on student books.
I did not go through all the commentaries to check whether someone already commented on the slide with the trigono.
A minor mistake :.
True Power [kW] = Apparent Power [kVA] x cos(Theta) or
True Power [kW] = Reactive Power [kVAr] / tan(Theta) but not
True Power [kW] = Reactive Power [kVA] x cos (Theta).
I guess you meant : equation 1 squared + equation 2 squared = equation 3 squared, so Eq1 should read : True Power [kW] = Apparent Power [kVA] x cos(Theta).
Correct ?
Also
Power Factor = cos(Theta)=True Power/Apparent Power (the division symbol can be confused with a + sign). This was already mentionned in a previous comment.
Hoping it helps.
Another concise, well paced and info packed video. Thank you.
La mejor explicación!!!
Súper genial
Felicidades
Y gracias!!!
From 1 query, you have me hooked. Seriously.
A great video and analogy to how power factors affect current supply 👏
This is practical like explaination for engr studs.
Nice,thumbs up for this, thx Mr.Paul.
Binge watching all his vids.
Not in school atm, but still found them interesting and insightful.
Great video, as always. I'm hoping you'll make one regarding three phase generators and the way they are connected (delta and Y configurations). Cheers!
This video should be taught on all electricity engineers if they truly want to understand what power factor is. You are fantastic!!
After many decades of doing operations, maintenance and repair in power substations and not " fully " grasping the concept of kva power factor, which was used for transformers, very large transformers, fan plant motors, pump room motors, compressor motors, overhead crane motors etc. I now have a better understanding of power factor and kva rating than I did all those years working with equipment with a kva rating. To be fair, in performing my job a true understanding was not nessecerry as I had no part in the design and specifications of the equipment, that was the engineering department. I just operated, maintained and repaired the equipment. Thanks for a better understanding.
Awesome! I’ll be sure to use the beer analogy next time I have to explain PFC to anyone! Bloody brilliant idea especially when at the pub and wanna sound clever! Cheers from Australia mate and keep up the great vids 😊👍🍺
Many thanks for this excellent and simple explanation. This video and each video in this channel is very precious. You guys rock!
The best video and explanation ever. I understood totally and found answers to my lots of questions. Thank you very much!
This is a pure Electrical Engineering class!! I'm excited!! When you talk about phasors you are talking about complex numbers! I love the Euler identity and Taylor series around zero (aka macLaurin Series) ... eipi = -1 😂 To achieve maximum power transfer coupled circuits must comply with:
Z1 + Z2 = R
Where
Z1 = Z and Z2 = Z*
Z is a complex number/impedance 😂😂
Amazing. The best explanation about P.F anyone can get👐
Very well explained!
those books (of 1000s of page) made it more difficult for us to understand these concepts.
And it took Paul, just an 11 mins to teach us this query. Keep going brother! we need more of you.
Very nice explaination
beer analogy was the best!!! thank you!
This video helped a LOT! Thanks for making it
Great illustrations! Love the beer analogy! ❤😊
Thanks so much for these videos. I have zero background in electrical engineering (except GCSE physics in 2002...) but am in a relevant industry now. I'm also awful with maths.
I don't need to be the expert at all but I'm working to understand the basics. These videos are so well made, clear, and easy to understand... Thank you again I really appreciate it!
So brilliantly simple and clear. Thank you
I am an electrical practioners here in the phillipines.. Im so very thankful for studying like this. keep up the goodwork. 😉
I recently had a talk about this with my colleague. This is a really great video. 👍
Possible correction and suggestion ...at about 2:37
In the True Power formula, I think the label for the first term was intended to be "Apparent Power" (kVA) in yellow or orange, as opposed to "Reactive Power" (kVA) in green.
Also in the final Power Factor formula it is hard to tell whether the symbol between the two terms is ÷ or +. I think it is ÷ though / might be clearer.
Yup. That's correct.
Gord, good catch. I saw that as well.
The last formula, the symbol is a Division Symbol. If you compare it with the Plus Symbol in the formula above, under the radical, there is a clear difference.
glad i read your comment, i wrote a plus when copying the formula. thanks
So does the reactive power go back into the grid? Or is it completely wasted?
or cot instead of cos
Wow thanks for the explanation. To the point and really well explained. Wish my lecturers explained in this way.
Thanks, great explanation.
Excellence demonstration.Thank you.
Awesome videos. Great teaching
Tysm!! Never understood these concepts so well before
Very important video lesson about electrical power factor explanation Thank you very much.
Very nice.Thank you !
This video is very helpful. Thanks a lot for this amazing explanation.
Thank you for the detailed video on a difficult topic. Have you by any chance covered in other videos the interactions between UPS/no-break (squared waves and true sine waves) versus computer power supplies (high efficiency through PFC vs regular non PFC)? And also how the filtering mechanism (PFC) can actually overload the non sine-wave UPS?
You are a living legend. Thank you very much 🙏🙏. Love from Malaysia ❤
This is very very very useful! Thank you!!!
A very good explanation.
Simple..enjoyable..brilliant🔥
Love your videos, explanations are tremendous!
Terrific video! Thank you.
i found it, simple and to the point. thank you
Your channel is amazinggg!!!! Thank you for this awesome content!!
I got my EE degree 7 years ago and it wasn't until this video that I actually understood this concept.
The biggest problem with most universities teaching EE is their emphasis. They emphasize too much on doing the complex calculation instead of basic concepts. What are we trying to accomplish with those numeric computations? Why is it so important to calculate the power factor? Yes, we know it is for efficiency but had no idea how to correct the problem or that utility company could charge us more (basic economics). Another big problem - fast pace. We cover so many materials every semester that everything is a rush. We don't get to enjoy and reflect back on what we have learned. Having an EE background actually helps me enjoy these videos, like watching a good movie - no stress at all compared to in an actual class. Made me appreciate all the things I have learned in EE. Got my EE degree in San Diego, California.
Clear explanation about power factor. Very nice video.
Great Episode, Thank You.
Excellent explained ,thank you so much
Superbly lucid explanation. I don’t think I could have understood the subject but for this video. I thought that voltage multiplied by amperage gave wattage or energy. Thank youuuuu! 👌
I am speechless sir, I am an electrician , if it is possible to go back on time I am going to learn electrical engineering from you. Seriously you are out of this world
Great explanation! Thank you
Best electrical ed channel out there.
Thank you so much sir...best explaining and delivering skills .
very good analogy and example of power factor, it is easy to understand.
Thanks for This video, it is found very useful for me. Though it is simple and learnt in college, leaning it now while in need is more useful.
I think this is the best way to explain about a power factor
Excellent explanation. Thank you.
Thank you, excelent description
Studying level 3 of electrical engineering, this channel is very helpful. Thanks bro.
YES! yes!! This is what I needed!!
this is the best way to explain PF to managers, students, and great refresher material... thanks a lot... next how the power grid is changing with thousands of inverters on line...:) ohoh
Very helpful! Thankyou very much!
Very well explained. Thank you sir for sharing your knowledge.
i have to say this is a very very good video!! Thanks!
Hey look some abstract concept from first year where I had no idea what the instructor was talking about. Good thing for you tube...