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). pp. 579-592. ISSN 2168-6777, DOI https://doi.org/10.1109/JESTPE.2023.3336186.
Full text not available from this repository.Abstract
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.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Inverters; Power system stability; Asymptotic stability; Convergence; Switches; Robustness; Surface impedance; Chattering-free; fixed-time stability; grid-connected inverter; robustness; sliding mode |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 08 Nov 2024 07:29 |
| Last Modified: | 08 Nov 2024 07:29 |
| URI: | http://eprints.um.edu.my/id/eprint/45684 |
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