DFT algorithm analysis in low-cost power quality measurement systems based on a DSP processor.

By M Szmajda et al

The application of power quality parameter measurement algorithms requires utilization of computational methods which transform the signal from the time- to the frequency-domain.

Currently, the most frequently applied method is the Fast Fourier Transformation (FFT). Because of the amendment of the proper power quality standards, it is also necessary to consider of implementation Discrete Fourier Transformation (DFT) algorithms. Considering the number of computations, DFT is more complicated than FFT.

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