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Fourier Transform Using the Fourier Analysis of Excel

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To use the Fourier tool in Excel you need to load the Data Analysis tool pack in Excel first. So in the current spreadsheet you should go to "Tools", "Add ins", Select "Analysis Toolpak" then click OK.

To perform tha Fourier analysis go to "Tools", click on "Data Analysis" and select "Fourier" from the list

Select the range of cells that you need to perform the analysis on, in this particular case cells of current sampekls in cells B2 to B1025. Note using Ecel Foirier analysis tool this must be a whole power of 2 ...

Solution Summary

Using a set of sampled waveform data Fourier tools are used in Excel to generate fourier coefficients hence produce spectrum graphs identifying key frequency components in the data, and more.

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Fourier Analysis of Time domain waveform using Excel and THD

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Q3. Preamble

Techniques involving the electronic control of power to a load such as controlled rectification and variable frequency drives are widely used by industry. There can be, however, serious problems with these techniques because of the generation of harmonics and the consequential harmonic distortion. Harmonics, when fed back to the supply, can have adverse effects on other electrical equipment. It can increase the current in power lines resulting wasted power that causes higher temperatures in neutral conductors and distribution transformers. High order harmonics may cause excessive heating in the core of a.c motors and can also interfere with communication systems. Increased temperatures can damage power systems and shorten the life of electronic equipment.

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