Harmonic detection with LMS adaptive notch filter and transient detection

Author

Pereira, R.R. ; da Silva, C.H. ; Borges da Silva, L.E. ; Lambert-Torres, G.

Author_Institution

CEFET-MG, Fed. Center of Technol. Educ. of Minas Gerais, Leopoldina, Brazil

fYear

2011

fDate

11-15 Sept. 2011

Firstpage

142

Lastpage

146

Abstract

This paper presents the application of the adaptive filters for harmonic detection in shunt active power filters. Improve the transient response time of the adaptive filter is the final objective of the strategy. The Least Mean Square (LMS) algorithm was used to adjust the coefficients of the adaptive notch filter. An algorithm based on the Clarke Transformation was used to detect the load current amplitude transients and then modify the step-size value. Simulations using Matlab/Simulink are presented to clarify the algorithm. Also practical implementation is performed using the DSP Texas Instruments TMS320F2812 and the experimental results depicted.

Keywords

active filters; adaptive filters; digital signal processing chips; least mean squares methods; notch filters; power harmonic filters; transforms; transient response; Clarke transformation; LMS adaptive notch filter; LMS algorithm; Matlab-Simulink simulation; TMS320F2812 DSP texas instruments; harmonic detection; least mean square algorithm; load current amplitude transient detection; shunt active power filters; step-size value; transient detection; transient response time; Active filters; Adaptive filters; Harmonic analysis; Least squares approximation; Power filters; Power harmonic filters; Adaptive filters; active power filter; adaptive notch filter; harmonic compensation; least mean square; transient detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (COBEP), 2011 Brazilian

Conference_Location

Praiamar

ISSN

2175-8603

Print_ISBN

978-1-4577-1644-7

Electronic_ISBN

2175-8603

Type

conf

DOI

10.1109/COBEP.2011.6085204

Filename

6085204