2 October 2023

Study of Harmonics Level | INTRODUCTION TO HARMONICS | Harmonics Generation | Harmonics Effects | Variable Frequency Drives | Total Harmonic Distortion | Total Distortion Demand | Crest Factor | Power Factor | IEEE-519 Background

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Study of Harmonics Level


Introduction to Harmonics

1. Harmonics Generation
2. Harmonics Effects
3. Variable Frequency Drives
4. Total Harmonic Distortion
5. Total Distortion Demand
6. Crest Factor
7. Power Factor
8. IEEE-519 Background


Harmonics operate at a frequency that is a multiple of the Fundamental and have a magnitude that is inversely proportional to the magnitude of the frequency. In power electronics harmonics are used to quantify deviations from the ideal sinusoidal AC line voltage and current waveforms that is to measure the amount of distortion in bar form. And its validity can be confirmed by Fourier theorem which states that any waveform can be resolved into its fundamental frequency and integral multiple of fundamental frequency.

With the advent of power electronics, non-linear loads and power switching devices such as Variable Frequency Drives (VFDs), the waveform quite often becomes distorted. These distortions are typically low in magnitude and can have an impact on the performance of connected devices.


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