Harmonics
Ben Kemink
A higher harmonic is a sine wave, with a frequency that is an integer multiple of the fundamental frequency.
Harmonic analysis resolves a distorted wave form into a DC-
Distorted wave resolve fundamental wave
7th harmonic wave Amplitude
frequency
fundamental component
3rd harmonic 5th harmonic
7th harmonic
5th harmonic wave 3rd harmonic wave
The Analysis
Influence of the OBSERVATION WINDOW
When a RECTANGULAR WINDOW is applied, the sampling period must be
synchronized with the input signal period.
How many harmonics are needed to obtain a certain accuracy?
(k=harmonics order number) (=n)