1.5 Hour Webinar on Power Factor Correction recorded in 2017 for the Electrical Power PE Exam

Sit in and watch this 1.5 hour private tutoring webinar on Power Factor Correction for the Electrical Power PE Exam that starts with the basics then works up to challenging problems.

In this private recorded tutoring webinar we go over:

Power factor, what it is, the two main relationships to solve for, and how it actually means in terms of how it affects power.

We talk about our power triangle relationships and visualize how each variable of apparent power affects power factor.

We discuss both desirable and undesirable power factor by looking at extremes of both examples, what happens when power factor equals 1, and what happens when power factor equals 0.

We do an example of finding the power factor of a three phase motor.

Then we do an example of how to improve the power factor of the same motor by holding P constant and adjusting Q.

Next we go into detail on just exactly how we go from an existing power factor to a new power factor, and how to solve for the difference in variables.

After that we talk about and do a few examples regarding finding the total power factor of systems with more than one load or element

Next we do two examples showing how power factor influences both single phase and three phase relationships using a motor load as an example.

We go on a quick aside concerning the single phase apparent power formulas vs the three phase apparent power formula.
Then we discuss how to calculate the total number of fixed capacitors it takes to improve power factor using an example.

Towards the end we wrap with talking about phasor diagrams and quantity each of the four quadrants in terms of leading, lagging, +P, -P, +Q, -Q, and how they are different for sources vs loads,
a great exercises for those that are unfamiliar.

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[Deuxiemeprince]

Hi, I have to say you are amazing!!! I recommended you to all my coworkers planning to take the PE!

[davidjaziel]

Thank you Zach. This video allowed me to not only be able to tackle power factor correction problems but better understand the concepts behind the problems

[michellequinn]

Long video but definitely worth it. Power factor correction has never been easier after I watched it. The video goes into detail about Real, Apparent and Reactive power and how the pf affects a system. I know that during the PE exam I should be able to answer any power factor correction problem with ease.

[ANEGRON]

This video has helped me understand some of the intricacies of power factor correction. Although over an hour, but it is worth the watch to understand this concept. Thank you for a job well done Zach!

[SridharraoTakkallapalli]

Your videos are a great resource Zach. This is again a great explanation.

[linaalvarez]

Excellent review of power factor and other formulas, 100% recommended! I particularly enjoyed the power factor improvement/correction section using the motors example.

[robertduran]

Zach, this is one my favorite of your videos. It's one of the first I watched before subscribing to your course, but it opened my eyes to the importance of drawing diagrams when solving problems. At first I didn't think power correction problems weren't that difficult, but after you explain phasor diagrams and how it can help prevent mistakes, it started me on making a habit of drawing things out first with proper notations.

[rfmoradkhani]

Amazing way of teaching stuff! This video really helped me to understand how to calculate the overall system PF, when and where to apply capacitors to correct the power factor and a lot of other good stuff. Thanks Zach.

[ligerOZQ]

This will be a great help to the exam. I've seen many questions in practice exam regarding the power factor connection.

This make things easier.

[ryankon]

This was very helpful, really helped simplify the calculations on PF correction to reduce reactive power!

[AlbertaDMode]

This was so useful I watched a several times especially part starting at 1:06:32 The second portion was very heavy but VERY useful, indeed.

[hssaini]

Great introduction to the power factor correction

[FM-uorv]

Wow Zach I am glad I stumbled on this video it was very helpful indeed.

[manilakamboj]

Great video. I do recommend the live class session from Electrical PE Review

[SP-xmgx]

great video. Helped a lot in grasping the key concepts.

[aymanantoun]

at 59:54 min of the 1.5Hr Webinar you mentioned that there is no use of the angel since we looking for the magnitude however in given problem there is a PF of 0.65 leading meaning theta = cos inverse(-0.65)=130.54 so the line current should be 30/sq. root 3 *477 cos(130.54)? since S=VI Cos theta then I= s/sq. root3*477*cos(130.54) Please clarify
thank you was a great lecture about PFC

[mikemuchesi]

I delight in PF correction problems as they recall geometric relationships. The key take away for me from this presentation is recognizing and distinguishing magnitudes and vectors and which elements vary vs. remain constant.

[warreer]

Why does 'P' stay constant rather than 'S'? Are we replacing the motor with a more efficient motor? Or finding a better way to feed that existing motor? This seems to suggest the former rather than the latter, yes?

[robertsmith]

Should it be KVAR kilo volt amps reactive instead of KVA for the unit of Q?

[mohammedhijazi]

(.87*50/(50+65)) + (.91*65/(50+65)) is it correct