Complex adaptive notch filters for frequency estimation of three-phase power systems

Author

Nishimura, S. ; Mvuma, Aloys ; Hinamoto, Takao

Author_Institution

Shimane Univ., Matsue, Japan

fYear

2013

fDate

8-12 Sept. 2013

Firstpage

1

Lastpage

4

Abstract

This paper presents a new technique for adaptive estimation of the frequency of unbalanced three-phase power systems using complex coefficient first-order notch filters. The input complex sinusoid is given by a sum of sequences with positive and negative frequencies. The analytical expression of a estimation error oscillation introduced by the sequence with negative frequency has been derived. Closed form expression for frequency tracking error has been also derived for a complex linear chirp signal. Computer simulation results are presented to validate the analysis.

Keywords

adaptive filters; frequency estimation; notch filters; oscillations; power systems; closed form expression; complex adaptive notch filter; complex coefficient first-order notch filter; complex linear chirp signal; frequency estimation; frequency tracking error; oscillation error estimation; three-phase power system; Adaptive filters; Band-pass filters; Filtering algorithms; Frequency estimation; IIR filters; Oscillators; Power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuit Theory and Design (ECCTD), 2013 European Conference on

Conference_Location

Dresden

Type

conf

DOI

10.1109/ECCTD.2013.6662321

Filename

6662321