Adaptive Filtering-Based Pseudo Open-Loop Three-Phase Grid-Synchronization Technique

Hafiz Ahmed, Samet Biricik, Elhoussin Elbouchikhi, Mohamed Benbouzid

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Abstract

This paper studies the grid-synchronization problem of three-phase system. Second-order adaptive filters are a popular tool for grid-synchronization. In this context, reduced-order generalized integrator has attracted some attention in recent time. However, existing implementations cannot control directly the closed-loop poles (real and imaginary) of reduced-order generalized integrator. To overcome this limitation, this paper proposes a novel reduced-order generalized integrator structure. To make the proposed technique frequency adaptive, an open-loop frequency estimation technique is also used. Comparative performance analysis are provided over two other advanced and recently proposed techniques. Results demonstrate the suitability and effectiveness of the proposed technique.
Original languageEnglish
Article number2927
Number of pages14
JournalEnergies
Volume13
Issue number11
DOIs
Publication statusPublished - 7 Jun 2020

Bibliographical note

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Keywords

  • grid-synchronization
  • phase estimation
  • frequency estimation
  • adaptive filter

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