An Enhanced Time-Delay-Based Reference Current Identification Method for Single-Phase System

Article

Gautam, Samir, Lu, Yuezhu, Taghizadeh, Seyedfoad, Xiao, Weidong and Lu, Dylan Dah-Chuan. 2022. "An Enhanced Time-Delay-Based Reference Current Identification Method for Single-Phase System." IEEE Journal of Emerging and Selected Topics in Industrial Electronics . 3 (3), pp. 683-693. https://doi.org/10.1109/JESTIE.2021.3102436
Article Title

An Enhanced Time-Delay-Based Reference Current Identification Method for Single-Phase System

Article CategoryArticle
AuthorsGautam, Samir, Lu, Yuezhu, Taghizadeh, Seyedfoad, Xiao, Weidong and Lu, Dylan Dah-Chuan
Journal TitleIEEE Journal of Emerging and Selected Topics in Industrial Electronics
Journal Citation3 (3), pp. 683-693
Number of Pages11
Year2022
PublisherIEEE (Institute of Electrical and Electronics Engineers)
Place of PublicationUnited States
ISSN2687-9735
2687-9743
Digital Object Identifier (DOI)https://doi.org/10.1109/JESTIE.2021.3102436
Web Address (URL)https://ieeexplore.ieee.org/abstract/document/9508821
Abstract

This article proposes an enhanced time-delay-based current component identification method for single-phase systems to overcome the absence of filtering and poor grid frequency response of conventional method. The proposed technique integrates a delayed signal cancellation with a time-delay unit, to incorporate a dc offset rejection feature, while maintaining speedy and precise extraction of orthogonal current components. The frequency adaption is also developed through the incorporation of linear interpolation. The dynamic and steady-state performance of the proposed method is analyzed and compared with two advanced second-order generalized integrator (SOGI) based methods, namely, modified SOGI and cascaded SOGI under different operating scenarios. The simulation and experimental results substantiate the advantage of zero steady-state error and lower settling time of the proposed solution while exhibiting comparable overshoot with advanced SOGI-based methods.

KeywordsActive power filters; low-pass filters (LPFs); orthogonal signal generation (OSG); reference current generation
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 20204008. Electrical engineering
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Byline AffiliationsUniversity of Sydney
University of Technology Sydney
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