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Chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations

This article proposes and experimentally validates a new chattering-free fixed-time robust sliding mode controller for the grid-connected three-phase two-level inverter through an RL filter. The proposed method addresses the reference trajectory tracking problem of grid current, enabling precise con...

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Main Authors: Hosseinabadi, Pooyan Alinaghi, Mekhilef, Saad, Pota, Hemanshu R., Kermadi, Mostefa
Format: Article
Published: Institute of Electrical and Electronics Engineers Inc. 2024
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://eprints.um.edu.my/44828/
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spelling my.um.eprints.448282024-07-02T02:27:38Z http://eprints.um.edu.my/44828/ Chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations Hosseinabadi, Pooyan Alinaghi Mekhilef, Saad Pota, Hemanshu R. Kermadi, Mostefa TK Electrical engineering. Electronics Nuclear engineering This article proposes and experimentally validates a new chattering-free fixed-time robust sliding mode controller for the grid-connected three-phase two-level inverter through an RL filter. The proposed method addresses the reference trajectory tracking problem of grid current, enabling precise control of the power injected into the grid. Advanced nonlinear sliding surfaces and control laws are designed with the primary objective of enhancing the robustness of the closed-loop system under the proposed controller. More specifically, this work concentrates on achieving robustness against variations in filter parameters and grid impedance. The control laws are formulated to alleviate chattering in the control signal. The notion of fixed-time stability is incorporated into the controller’s design to ensure fixed-time convergence for both reaching and sliding phases and the ability to adjust the guaranteed settling time regardless of initial conditions. The fixed-time stability of the closed-loop system is proved using the Lyapunov theory. The simulation and experimental results validate the effectiveness of the proposed method. It demonstrates precise tracking capability and robust performance, especially when compared with a finite-time sliding mode controller and a conventional asymptotic sliding mode controller. © 2024 Institute of Electrical and Electronics Engineers Inc.. All rights reserved. Institute of Electrical and Electronics Engineers Inc. 2024 Article PeerReviewed Hosseinabadi, Pooyan Alinaghi and Mekhilef, Saad and Pota, Hemanshu R. and Kermadi, Mostefa (2024) Chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations. IEEE Journal of Emerging and Selected Topics in Power Electronics, 12 (1). 579 – 592. ISSN 2168-6777, DOI https://doi.org/10.1109/JESTPE.2023.3336186 <https://doi.org/10.1109/JESTPE.2023.3336186>. 10.1109/JESTPE.2023.3336186
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Hosseinabadi, Pooyan Alinaghi
Mekhilef, Saad
Pota, Hemanshu R.
Kermadi, Mostefa
Chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations
description This article proposes and experimentally validates a new chattering-free fixed-time robust sliding mode controller for the grid-connected three-phase two-level inverter through an RL filter. The proposed method addresses the reference trajectory tracking problem of grid current, enabling precise control of the power injected into the grid. Advanced nonlinear sliding surfaces and control laws are designed with the primary objective of enhancing the robustness of the closed-loop system under the proposed controller. More specifically, this work concentrates on achieving robustness against variations in filter parameters and grid impedance. The control laws are formulated to alleviate chattering in the control signal. The notion of fixed-time stability is incorporated into the controller’s design to ensure fixed-time convergence for both reaching and sliding phases and the ability to adjust the guaranteed settling time regardless of initial conditions. The fixed-time stability of the closed-loop system is proved using the Lyapunov theory. The simulation and experimental results validate the effectiveness of the proposed method. It demonstrates precise tracking capability and robust performance, especially when compared with a finite-time sliding mode controller and a conventional asymptotic sliding mode controller. © 2024 Institute of Electrical and Electronics Engineers Inc.. All rights reserved.
format Article
author Hosseinabadi, Pooyan Alinaghi
Mekhilef, Saad
Pota, Hemanshu R.
Kermadi, Mostefa
author_facet Hosseinabadi, Pooyan Alinaghi
Mekhilef, Saad
Pota, Hemanshu R.
Kermadi, Mostefa
author_sort Hosseinabadi, Pooyan Alinaghi
title Chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations
title_short Chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations
title_full Chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations
title_fullStr Chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations
title_full_unstemmed Chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations
title_sort chattering-free fixed-time robust sliding mode controller for grid-connected inverters under parameter variations
publisher Institute of Electrical and Electronics Engineers Inc.
publishDate 2024
url http://eprints.um.edu.my/44828/
_version_ 1805881173100986368
score 13.211869

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