Implementation of a novel synchronization method using Sliding Goertzel DFT

Author

García-Retegui, Rogelio ; González, Sergio A. ; Funes, Marcos A. ; Maestri, Sebastián

Author_Institution

Univ. Nacional de Mar del Plata, Buenos Aires

fYear

2007

fDate

3-5 Oct. 2007

Firstpage

1

Lastpage

5

Abstract

This work presents a synchronization method based on the implementation of a sliding-window digital-filter that uses the Goertzel algorithm. The proposed method filters the incoming power grid signal and specifies the input frequency by measuring the period of the output phase. The sampling frequency is adjusted to correct the phase errors introduced by the filter whenever variations in the frequency occur. Regardless of the magnitude of the input frequency variations, this method determines the input frequency with high accuracy.

Keywords

digital filters; discrete Fourier transforms; power grids; signal processing; synchronisation; Goertzel algorithm; discrete Fourier transform; power grid signal; sampling frequency; sliding Goertzel discrete Fourier transform; sliding-window digital-filter; synchronization method; Discrete Fourier transforms; Error correction; Frequency measurement; Frequency synchronization; Phase measurement; Power grids; Power harmonic filters; Power measurement; Sampling methods; Voltage; Converter synchronization method; DSP; Discrete Fourier Transform (DFT); Goertzel;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing, 2007. WISP 2007. IEEE International Symposium on

Conference_Location

Alcala de Henares

Print_ISBN

978-1-4244-0829-0

Electronic_ISBN

978-1-4244-0830-6

Type

conf

DOI

10.1109/WISP.2007.4447644

Filename

4447644