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From: Sharon cole on 20 Feb 2010 12:48
Hi All,

I am new to Matlab but finding it really useful especially. However, I would appreciate your help to do the following:

I have a set of sampled voltage data from a power source that represents a sinusoid with harmonics.
e.g., one cycle is 0.00, 0.81, 1.30, 1.36, 1.10, 0.75, 0.51, 0.41, 0.35, 0.22

I would like to calculate the total harmonic distortion (or at least up to say the 9th harmonic). I can view the harmonics using the FFT function. If I could calculate the voltage levels, I could get THD from there...

Can you please advise if this can be done using basic Matlab.

Many Thanks,
Shaz
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