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# EPG Exam Question 36

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

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6 minutes ago, eatsleep said:

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

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.

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On 6/20/2019 at 10:06 AM, FelizENG said:

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.

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

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