Reference current estimation under distorted line voltage for control of shunt active power filters

Author

Moreno, Vctor M. ; López, Alberto Pigazo ; Garcías, Ramón Ignacio Diego

Author_Institution

Dept. of Electron. & Comput., Univ. of Cantabria, Santander, Spain

Volume

19

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

988

Lastpage

994

Abstract

Shunt active power filters (APF) are used in power systems for the compensation of harmonic currents generated for non linear loads. A new digital reference current estimation method for control of APF using a Kalman digital algorithm is presented. Its capability of prediction avoids the effects of computational lags derived from the digital signal processing. The characteristics of the proposed technique are: the harmonic current compensation in a global or a selective way, the fast dynamical response and its independence from disturbances in the line voltage waveform. Simulation and experimental results under distorted supply voltages demonstrate the usefulness of the presented technique to improve the filtering performance.

Keywords

Kalman filters; active filters; control engineering computing; harmonic distortion; power engineering computing; power filters; power supply circuits; APF control; Kalman digital algorithm; active power filters; computational lags; digital reference current estimation methods; digital signal processing; distorted line voltage; dynamical response; harmonic current compensation; line voltage waveform; nonlinear loads; shunt active power filter control; voltage total harmonic distortion; Active filters; Computational modeling; Digital signal processing; Filtering; Kalman filters; Power generation; Power harmonic filters; Power system harmonics; Signal processing algorithms; Voltage control; APFs; Active power filters; Kalman digital algorithm; VTHD; harmonic current compensation; voltage total harmonic distortion;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2004.830049

Filename

1310385