A two-dimensional FFT algorithm for three-phase inverter-fedsystems |
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Authors: | De Doncker RW Vandenput AJA |
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Affiliation: | General Electric Co., Schenectady, NY; |
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Abstract: | A spectrum analyzer for three-phase inverter-fed balanced systems which is capable of calculating up to 24 harmonic components of the line currents every 130 μs is presented. The method is based on a synchronized sampling technique and on a highly efficient fast Fourier transform (FFT) for three-phase systems. The latter consists of a two-dimensional six-point discrete Fourier transform (DFT) followed by a two-dimensional four-point DFT. The total FFT algorithm has been successfully implemented on a TMS32010 digital signal processor |
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