An Enhanced Frequency-Fixed All-Pass Filter PLL for Single-Phase Application

Paper

Gautam, Samir, Lu, Yuezhu, Lu, Dylan Dah-Chuan, Xiao, Weidong and Hasan, Saad Ul. 2021. "An Enhanced Frequency-Fixed All-Pass Filter PLL for Single-Phase Application." 31st Australasian Universities Power Engineering Conference (AUPEC 2021). Perth, Australia 26 - 30 Sep 2021 United States. IEEE (Institute of Electrical and Electronics Engineers). https://doi.org/10.1109/AUPEC52110.2021.9597826
Paper/Presentation Title

An Enhanced Frequency-Fixed All-Pass Filter PLL for Single-Phase Application

Presentation TypePaper
AuthorsGautam, Samir, Lu, Yuezhu, Lu, Dylan Dah-Chuan, Xiao, Weidong and Hasan, Saad Ul
Journal or Proceedings TitleProceedings of the 31st Australasian Universities Power Engineering Conference (AUPEC 2021)
Number of Pages6
Year2021
PublisherIEEE (Institute of Electrical and Electronics Engineers)
Place of PublicationUnited States
ISBN9781665434515
Digital Object Identifier (DOI)https://doi.org/10.1109/AUPEC52110.2021.9597826
Web Address (URL) of Paperhttps://ieeexplore.ieee.org/abstract/document/9597826
Web Address (URL) of Conference Proceedingshttps://ieeexplore.ieee.org/xpl/conhome/9597674/proceeding
Conference/Event31st Australasian Universities Power Engineering Conference (AUPEC 2021)
Event Details
31st Australasian Universities Power Engineering Conference (AUPEC 2021)
Parent
Australasian Universities Power Engineering Conference
Event Date
26 to end of 30 Sep 2021
Event Location
Perth, Australia
Abstract

All-pass filter (APF) offers a simpler implementation for orthogonal signal generation (OSG) and has widely featured in single-phase phase locked loop (PLL) applications. However, they have two prominent issues, the absence of filtering capability and reliance on grid frequency information for yielding 90° phase shifted signal. This paper proposes an enhanced APF-PLL based on frequency fixed configuration for abnormal grid voltage scenarios addressing both the aforementioned concerns. The suggested structure utilizes a modified transformation for attaining frequency-independent APF-PLL, while a frequency-fixed bandpass filter (BPF) is appended as a prefilter to serve the filtering objective. Thus obtained PLL structure, is then evaluated against some recently proposed OSG-PLLs. The simulation and experimental results demonstrate improved performance (dynamic and steady-state) in different operating scenarios.

KeywordsSingle-phase system; phase locked loop; all-pass filter; bandpass filter
Contains Sensitive ContentDoes not contain sensitive content
ANZSRC Field of Research 2020400808. Photovoltaic power systems
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Byline AffiliationsUniversity of Sydney
University of Technology Sydney
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