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Learn How to Calculate Harmonic Number and Resonance Frequency – Tutorial

How to Calculate Harmonic Number and Resonance Frequency – Definition, Formula and Example

Definition:

Harmonic Number:

It is the sum of the reciprocals of the first n natural numbers. This is a phenomenon which occurs when the inductive reactance and the capacitive reactance of the power system become equal.

Harmonic Resonance Frequency:

It is a signal or wave whose frequency is an integral multiple of the frequency of some reference signal or wave.

Formula:

Example :

Calculate the harmonic number and harmonic resonance frequency for the power system with the capcitance 5F, Inductance 6H and frequency 200Hz.

Given,

Capacitance = 5F Inductance = 6H Frequency = 200Hz

To Find,

Harmonic number and resonance frequency

Solution:
Step 1:

Substitute the values in harmonic number formula

 Harmonic number wr / w w 2 x 3.14 x 200 w = 1256 wr = 1 / √( 6 x 5 ) wr = 0.18257 Harmonic number = 0.18257 / 1256 = 0.0001
Step 2:

Substitute the values in harmonic resonance frequency formula f = 1 / 2π x √(LC) f = 1 / (2 x 3.14) x (√6 x 5) f = 1 / (6.28 x 5.4772) f = 1 / 34.3968 f = 0.0291 Hz

Learn how to calculate Harmonic number and resonance frequency in this tutorial, given with the definition, formula and example.