Sliding mode control technique for indirect current controlled active filter

Author

Singh, Brij N.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Tulane Univ., New Orleans, LA, USA

fYear

2003

fDate

37722

Firstpage

51

Lastpage

58

Abstract

This paper deals with a DSP based implementation of a three-phase active filter (AF) to compensate harmonics of a nonlinear load. The AF system suffers from the problems of switching ripples and these ripples contribute considerably to the Total Harmonics Distortion (THD) in the supply current. This investigation proposes a new and simple approach for the elimination of switching ripples. In closed loop control of the AF sliding mode control (SMC) technique is used. A current controlled voltage source inverter (CC-VSI) based configuration is used as an AF. A three-phase diode bridge rectifier with R-L load is considered as a nonlinear load. The prototype model of the AF is tested, steady state and transient results are given and discussed in detail.

Keywords

active filters; bridge circuits; digital control; digital signal processing chips; electric current control; harmonic distortion; invertors; power harmonic filters; rectifying circuits; variable structure systems; DSP based implementation; R-L load; THD; current controlled voltage source inverter; direct current control; harmonics compensation; indirect current control; indirect current controlled active filter; nonlinear load; sliding mode control technique; sliding mode controller; supply current; switching ripples; three-phase active; three-phase diode bridge rectifier; total harmonics distortion; Active filters; Bridge circuits; Current supplies; Digital signal processing; Diodes; Inverters; Power harmonic filters; Sliding mode control; Total harmonic distortion; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

IEEE Region 5, 2003 Annual Technical Conference

Print_ISBN

0-7803-7740-0

Type

conf

DOI

10.1109/REG5.2003.1199710

Filename

1199710