eprintid: 10195864 rev_number: 7 eprint_status: archive userid: 699 dir: disk0/10/19/58/64 datestamp: 2024-08-16 10:02:48 lastmod: 2024-08-16 10:02:48 status_changed: 2024-08-16 10:02:48 type: article metadata_visibility: show sword_depositor: 699 creators_name: Liu, Wenwen creators_name: Pei, Jinlei creators_name: Ye, Yujian creators_name: Liu, Yuanchang creators_name: Bucknall, Richard creators_name: Xu, Dezhi title: Prescribed-performance-based adaptive fractional-order sliding mode control for ship DC microgrid ispublished: pub divisions: UCL divisions: B04 divisions: F45 keywords: Ship DC microgrid; Prescribed performance control; Fractional-order note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: To address the issue of DC bus voltage fluctuation in an integrated power system aboard ships, this paper designs a prescribed-performance-based adaptive fractional-order sliding mode controller that ensures rapid convergence and maintains voltage stability, thereby enhancing the overall performance of the system. Firstly, a hybrid energy storage system is introduced into ship DC microgrid to meet the load demand in different scenarios. Then, taking into account the response time requirements of the ship’s power grid, the prescribed performance function is set up to ensure that the tracking error of the DC bus voltage strictly converges at the specified speed and range. Meanwhile, fractional-order sliding mode surfaces are designed to reduce voltage chattering and achieve better tracking performance in conjunction with prescribed performance control. Considering the uncertainty of parameters in the model, the adaptive law based on the projection operator is used to estimate the unknown parameters in real time. The effectiveness of the proposed method has been verified through simulation and hardware-in-the-loop experimental results. date: 2024-11-01 date_type: published publisher: Elsevier official_url: https://doi.org/10.1016/j.oceaneng.2024.118885 full_text_type: other language: eng verified: verified_manual elements_id: 2305476 doi: 10.1016/j.oceaneng.2024.118885 lyricists_name: Liu, Yuanchang lyricists_id: YLIUA09 actors_name: Liu, Yuanchang actors_id: YLIUA09 actors_role: owner full_text_status: restricted publication: Ocean Engineering volume: 311 number: 2 article_number: 118885 issn: 0029-8018 citation: Liu, Wenwen; Pei, Jinlei; Ye, Yujian; Liu, Yuanchang; Bucknall, Richard; Xu, Dezhi; (2024) Prescribed-performance-based adaptive fractional-order sliding mode control for ship DC microgrid. Ocean Engineering , 311 (2) , Article 118885. 10.1016/j.oceaneng.2024.118885 <https://doi.org/10.1016/j.oceaneng.2024.118885>. document_url: https://discovery.ucl.ac.uk/id/eprint/10195864/1/Accepted_version.pdf