文章基本信息

标题：Grid Fault-Resilient Control of a PMSGbased Tidal Stream Turbine
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作者：Sana Toumi ; Elhoussin Elbouchikhi ; Mohamed Benbouzid 等
期刊名称：Journal of Electrical Systems
印刷版ISSN：1112-5209
出版年度：2020
卷号：16
期号：4
页码：429-447
出版社：ESRGroups
摘要：This paper describes a grid fault-resilient control approach for a grid-connected tidal stream turbine (TST) driven by a permanent magnet synchronous generator (PMSG). TSTs mainly use conventional PI controllers while they are very sensitive to grid faulty conditions. In this faulty context, the TST will experience power generation decrease and dynamic performance degradations. Indeed, the grid-side converter can be deactivated and the generator may be disconnected from the grid. Also, grid faults can make the system instable during and after faults occurrence, which can deteriorate the quality of the power injected into the grid from the TST generation system. In this paper, a resilient controller is therefore derived to enhance the PMSG-based TST performance during grid fault. In fact, high-order sliding modes have been adopted to sustain a minimum level of optimal performance and achieve a smoother gridinjected power in case of a grid fault. Simulations carried out on real tidal speed data measured at the Raz de Sein site in Bretagne in France clearly highlights proves the effectiveness of the proposed grid fault-resilient approach.
关键词：Tidal stream turbine;permanent magnet synchronous generator;generator-side converter;grid-side converter;LVRT;fault-resilient control;PI control;second-order sliding mode control.