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CURRENT HARMONIC COMPENSATION USING PREDICTIVE CONTROLLERS

MOHAMMAD HAERI

Electrical Engineering Department, Sharif University of Technology, Azadi Avenue, Tehran, P. O. Box 11365-9363, Iran

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and

KAMIAR KORDARI

Electrical Engineering Department, Sharif University of Technology, Azadi Avenue, Tehran, P. O. Box 11365-9363, Iran

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https://doi.org/10.1142/S0218126604001817Cited by:2 (Source: Crossref)

Abstract

The power quality has become a major concern since late 1980's. There has been increasing interest in studying power quality problems, one of which is the existence of the current/voltage harmonics. In order to eliminate these harmonics, different methods have so far been proposed and developed. In this paper, line current harmonics reduction is achieved by using an active filter. More specifically, our aim is to introduce a proper control design method for the current control part of the active filter. To achieve the goal, two different predictive controllers are examined. Due to the existing physical constraints (switching frequency and computational limits) in real applications, a new predictive control approach is proposed. The performance of this controller is compared to those obtained by two existing predictive controllers as well as commonly used PI controller through computer simulations considering various circumstances.

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