Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems

The frequency-locked loop based on a second-order generalized integrator has been widely used in grid synchronization systems but featuring unfavorable harmonics filtering performance. To solve this issue, a frequency-locked loop based on multiple second-order generalized integrators was proposed, w...

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Autores principales:	Jiayi Geng, Xue Li, Qing Liu, Jianliang Chen, Zhen Xin, Poh Chiang Loh
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2020
Materias:	Frequency-looked loop frequency estimation fractional delay harmonic distortion quadrature-signal generator repetitive control Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/53ee997634af4160816d8b2f6d445787
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spelling	oai:doaj.org-article:53ee997634af4160816d8b2f6d4457872021-11-19T00:05:37ZFrequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems2169-353610.1109/ACCESS.2020.3018639https://doaj.org/article/53ee997634af4160816d8b2f6d4457872020-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9173654/https://doaj.org/toc/2169-3536The frequency-locked loop based on a second-order generalized integrator has been widely used in grid synchronization systems but featuring unfavorable harmonics filtering performance. To solve this issue, a frequency-locked loop based on multiple second-order generalized integrators was proposed, which is to realize harmonics attenuation and frequency synchronization concurrently. Nevertheless, it is inconvenient for implementation for the complex structure and burdensome calculation. The target of this work is to solve these issues by proposing two novel frequency-locked loop structures based on repetitive controllers. The proposed solutions show many favorable features simultaneously, <inline-formula> <tex-math notation="LaTeX">$i$ </tex-math></inline-formula>) they are resilient to all the commonly confronted grid interferences, such as harmonics, dc components, voltage sages, frequency variations, etc.; <italic>ii</italic>) they are convenient to implement thanks to the simpler structure and significantly alleviated computation load; <italic>iii</italic>) they have satisfying dynamic performance. Eventually, the effectiveness of the proposed frequency-locked loops is comprehensively verified by experiments under different working conditions.Jiayi GengXue LiQing LiuJianliang ChenZhen XinPoh Chiang LohIEEEarticleFrequency-looked loopfrequency estimationfractional delayharmonic distortionquadrature-signal generatorrepetitive controlElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 8, Pp 154861-154870 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Frequency-looked loop frequency estimation fractional delay harmonic distortion quadrature-signal generator repetitive control Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Frequency-looked loop frequency estimation fractional delay harmonic distortion quadrature-signal generator repetitive control Electrical engineering. Electronics. Nuclear engineering TK1-9971 Jiayi Geng Xue Li Qing Liu Jianliang Chen Zhen Xin Poh Chiang Loh Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems
description	The frequency-locked loop based on a second-order generalized integrator has been widely used in grid synchronization systems but featuring unfavorable harmonics filtering performance. To solve this issue, a frequency-locked loop based on multiple second-order generalized integrators was proposed, which is to realize harmonics attenuation and frequency synchronization concurrently. Nevertheless, it is inconvenient for implementation for the complex structure and burdensome calculation. The target of this work is to solve these issues by proposing two novel frequency-locked loop structures based on repetitive controllers. The proposed solutions show many favorable features simultaneously, <inline-formula> <tex-math notation="LaTeX">$i$ </tex-math></inline-formula>) they are resilient to all the commonly confronted grid interferences, such as harmonics, dc components, voltage sages, frequency variations, etc.; <italic>ii</italic>) they are convenient to implement thanks to the simpler structure and significantly alleviated computation load; <italic>iii</italic>) they have satisfying dynamic performance. Eventually, the effectiveness of the proposed frequency-locked loops is comprehensively verified by experiments under different working conditions.
format	article
author	Jiayi Geng Xue Li Qing Liu Jianliang Chen Zhen Xin Poh Chiang Loh
author_facet	Jiayi Geng Xue Li Qing Liu Jianliang Chen Zhen Xin Poh Chiang Loh
author_sort	Jiayi Geng
title	Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems
title_short	Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems
title_full	Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems
title_fullStr	Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems
title_full_unstemmed	Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems
title_sort	frequency-locked loop based on a repetitive controller for grid synchronization systems
publisher	IEEE
publishDate	2020
url	https://doaj.org/article/53ee997634af4160816d8b2f6d445787
work_keys_str_mv	AT jiayigeng frequencylockedloopbasedonarepetitivecontrollerforgridsynchronizationsystems AT xueli frequencylockedloopbasedonarepetitivecontrollerforgridsynchronizationsystems AT qingliu frequencylockedloopbasedonarepetitivecontrollerforgridsynchronizationsystems AT jianliangchen frequencylockedloopbasedonarepetitivecontrollerforgridsynchronizationsystems AT zhenxin frequencylockedloopbasedonarepetitivecontrollerforgridsynchronizationsystems AT pohchiangloh frequencylockedloopbasedonarepetitivecontrollerforgridsynchronizationsystems
_version_	1718420668231450624

Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems

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