Multi-harmonic frequency identification through multistage adaptive notch filter and least squares

Author

Biswal, M.K. ; Dash, P.K. ; Nanda, S.

Author_Institution

Silicon Inst. of Technol., Bhubaneswar, India

fYear

2011

fDate

28-30 Dec. 2011

Firstpage

1

Lastpage

4

Abstract

The identification and accurate measurement of multi-harmonic frequency components is often required for characterization of various signals and systems. This paper proposes a new method for Multi-harmonic frequency identification based on adaptive notch filtering and least squares fitting. The adaptive notch filtering algorithm is employed for estimation of coarse frequency components. From the initial estimates of the frequency components a least square fitting method is applied to accurately identify the amplitude, phase and frequency estimates.

Keywords

adaptive filters; filtering theory; frequency estimation; least squares approximations; notch filters; adaptive notch filtering algorithm; amplitude estimate identification; coarse frequency component estimation; frequency estimate identification; least squares fitting; multiharmonic frequency component measurement; multiharmonic frequency identification; multistage adaptive notch filter; phase estimate identification; Adaptive filters; Band pass filters; Filtering algorithms; Frequency estimation; Harmonic analysis; IIR filters; Power harmonic filters; Multi-harmonic frequency identification; adaptive notch filters; frequency estimation; least squares;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy, Automation, and Signal (ICEAS), 2011 International Conference on

Conference_Location

Bhubaneswar, Odisha

Print_ISBN

978-1-4673-0137-4

Type

conf

DOI

10.1109/ICEAS.2011.6147197

Filename

6147197