Optimal and adaptive active filtering under non stiff and distorted voltage conditions

Author

Rafiei, S.M.R.

Author_Institution

Fac. of Electr. Eng., Sahand Technol. Univ., Tabriz, Iran

Volume

3

fYear

2003

fDate

13-17 July 2003

Firstpage

1609

Abstract

In this paper operation of OFC based active power filters under non stiff and distorted voltage conditions is investigated. Under these conditions there exist a feedback from the load currents to the load voltages hence this situation makes the OFC based system a closed loop adaptive system which may represent an unstable or poor transient response behavior. By identifying the source equivalent circuit an improved OFC algorithm (IOFC) has been proposed. The proposed control algorithm considers the load voltages variation due to the load current variation. Successful performance of the proposed algorithm has been investigated and proved by several MATLAB IOFC systems, which minimizes the load voltage harmonics, has been proposed and investigated.

Keywords

active filters; adaptive filters; closed loop systems; optimal control; optimisation; power harmonic filters; power supply quality; power system control; power system harmonics; adaptive active filtering; closed loop adaptive system; distorted voltage conditions; load currents; load voltage harmonics; load voltages; optimal and flexible control strategy; optimal filtering; poor transient response behavior; power quality; Active filters; Adaptive filters; Adaptive systems; Equivalent circuits; Feedback loop; Filtering; MATLAB; Power harmonic filters; Transient response; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society General Meeting, 2003, IEEE

Print_ISBN

0-7803-7989-6

Type

conf

DOI

10.1109/PES.2003.1267396

Filename

1267396