A modified TFT algorithm for computationally efficient PMUs

Several applications, such as phasor measurements in Phasor Measurement Unit (PMU), require to retrieve only one spectral component of the whole signal. In such situations, the classical DFT and FFT algorithms may become computationally inefficient and several alternative methods have been proposed to measure a single spectral component in an efficient way. This paper proposes a modified Taylor-Fourier Transform (TFT) that features a higher computational efficiency than the FFT algorithm when a single harmonic component is needed and a comparable efficiency when up to 8 different harmonic components (not necessarily contiguos) are needed.