Title :
A two-dimensional FFT algorithm for three phase inverter fed systems
Author :
De Doncker, R.W. ; Vandenput, A.
Author_Institution :
General Electric Corp. Res. & Dev. Center, Schenectady, NY, USA
Abstract :
A spectrum analyzer is presented for three-phase inverter-fed balanced machine systems that is capable of calculating up to 24 harmonic components of the line currents every 130 μs. The method is based on a synchronized sampling technique and a high-efficiency FFT for three-phase systems. The latter consists of a two-dimensional six-point DFT followed by a two-dimensional four-point DFT. The total FFT algorithm has been successfully implemented on a TMS32010 digital signal processor
Keywords :
electric machines; fast Fourier transforms; invertors; machine theory; DFT; FFT algorithm; TMS32010 digital signal processor; discrete Fourier transform; harmonic components; inverter; line currents; spectrum analyzer; synchronized sampling; three-phase machines; Bandwidth; Circuits; Frequency synchronization; Laboratories; Power harmonic filters; Power system harmonics; Pulse width modulation inverters; Signal processing; Signal processing algorithms; Voltage-controlled oscillators;
Conference_Titel :
Power Electronics Specialists Conference, 1989. PESC '89 Record., 20th Annual IEEE
Conference_Location :
Milwaukee, WI
DOI :
10.1109/PESC.1989.48582
