EPG Exam Question 36

[eatsleep]

Would anyone be able to explain where the equation used in the soltion comes from this one:  

 

[FelizEng PE]

Would anyone be able to explain where the equation used in the soltion comes from this one:  

View attachment 13424

Good-morning,

I found this equation in Electrical Machines, Drives and Power Systems by Theodore Wildi (5th Edition)

Chapter 30 - Harmonics pg 800 (eq. 30.1) 

"Effective value of a distorted voltage"

V = Effective value of the distorted Voltage

Vf = Effective value of the fundamental

Vh = Effective value of all the harmonics

I hope this helps. 

 

[eatsleep]

Good-morning,

I found this equation in Electrical Machines, Drives and Power Systems by Theodore Wildi (5th Edition)

Chapter 30 - Harmonics pg 800 (eq. 30.1) 

"Effective value of a distorted voltage"

V = Effective value of the distorted Voltage

Vf = Effective value of the fundamental

Vh = Effective value of all the harmonics

I hope this helps. 

This is very helpful. Thanks

 

[fyrfytr310]

Glad you got the answer, if you don't have Wildi, I recommend you get it.  Very handy.