Gain Normalized Adaptive Observer For Three-Phase System

Hafiz Ahmed, Miao Lin Pay, Mohamed Benbouzid, Yassine Amirat, Elhoussin Elbouchikhi

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)
    139 Downloads (Pure)

    Abstract

    This paper proposes the estimation of parameters and symmetrical components of unbalanced grid using adaptive observer framework. Recent adaptive observers proposed in the literature doesn’t employ any gain normalization in their frequency estimation loop. This can be problematic in the presence of large voltage dip. This paper proposes a solution to overcome this limitation using a novel gain normalized - frequency-locked loop (GN-FLL). Technical details of GN-FLL, stability analysis and tuning are provided in this paper. Comparative experimental results with adaptive Luenberger observer, second-order generalized integrator - phase-locked loop (SOGI-PLL) and enhanced PLL (EPLL) are provided to demonstrate the effectiveness the proposed technique in the single-phase case. Comparative experimental results with double SOGI-FLL (DSOGI-FLL) and adaptive notch filter (ANF) are provided to demonstrate the effectiveness the proposed technique in the three-phase case.
    Original languageEnglish
    Article number105821
    JournalInternational Journal of Electrical Power and Energy Systems
    Volume118
    Early online date15 Jan 2020
    DOIs
    Publication statusPublished - Jun 2020

    Bibliographical note

    NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Electrical Power and Energy Systems. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Electrical Power and Energy Systems, 118, (2020) DOI: 10.1016/j.ijepes.2020.105821

    © 2020, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

    Keywords

    • Frequency estimation
    • Frequency-Locked Loop (FLL)
    • Phase estimation
    • Three-phase sequence detection

    ASJC Scopus subject areas

    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering

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