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Harmonic Calculations

Category: Power Quality, PQ Canvass

Harmonic Calculations

Harmonics and interharmonics may be computed by using a DFT on the raw time series waveform data.  This frequency decomposition is a powerful way to analyze waveform distortion.


Figure 1 Waveform Capture

A periodically distorted waveform may be decomposed into combination of sine waves with multiples of the powerline frequency; these are known as harmonics. 


In PQ Canvass, users may quickly and easily perform harmonic analyses by looking at waveform capture records.


This Whitepaper Includes:

  • Harmonic Result From Non-Linear Loads In An Electrical System
  • The Discrete Fourier Transform (DFT)
  • Harmonic Magnitude & Phase Angle
  • Interharmonics & Harmonic Groups



Download White Paper Here