文章基本信息

标题：FractionalOrder PI Control of DFIGBased Tidal Stream Turbine
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作者：Hao Chen ; Wei Xie ; Xiyang Chen 等
期刊名称：Journal of Marine Science and Engineering
电子版ISSN：2077-1312
出版年度：2020
卷号：8
期号：312
页码：309
DOI：10.3390/jmse8050309
语种：English
出版社：MDPI AG
摘要：This study mainly investigates the current and speed control strategies of a doublyfed induction generator (DFIG), which is applied to a tidal stream turbine (TST). Indeed, DFIG using integerorder PI (IOPI) controller has been widely proposed in the applications with a similar system, especially in wind energy conversion system (WECS). However, these conventional controllers cannot deal with the problems caused by the parameter variations satisfactorily under complex and harsh operation conditions, and may even deteriorate the performance. As a result, a fractionalorder PI (FOPI) controller is considered to improve the efficiency and performance of DFIGbased TST in this paper. The FOPI controller, developed from the traditional IOPI controller and the fractional calculus theory, has a lot of prominent merits in many aspects, such as robustness, stability, and dynamic performance. In this paper, the proposed control strategies are embedded into the whole TST model which contains the tidal stream turbine, and the generator. The obtained simulation results demonstrate the prominent effectiveness and advantages of the proposed strategies compared with the conventional IOPI controller in terms of overshoot, static error, adjustment time, and robustness. It implies that FOPI controller could be a good candidate in TST applications.