漂浮式风机气-水动力耦合下的独立变桨控制方法

doi:10.19595/j.cnki.1000-6753.tces.180919

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摘要提出一种漂浮式风机（FOWT）气-水动力耦合下基于径向基函数神经网络（RBFNN）的独立变桨控制方法。首先,考虑风剪切效应和塔影效应,建立更精确的气动模型,将气动模型与水动模型耦合,得到风浪流扰动下的相对风速。在此基础上,采用径向基函数（RBF）神经网络逼近变桨控制系统未知的非线性函数,通过Lyapunov方法导出自适应率,在线调整神经网络权值来改善所提出的独立变桨控制系统的动态性能。在FAST-Matlab/Simulink联合仿真的基础上,将该文所提控制方法和传统PI控制方法进行对比结果表明,该文所提方法能够更有效地实现FOWT输出功率的稳定,并在一定程度上减小了漂浮基础的载荷波动和俯仰振荡。

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	周腊吾
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	李飞龙
	胡舟

关键词 ：漂浮式风机, 变桨控制, 气-水动力耦合, 多自由度

Abstract：In this paper, an individual blade pitch control strategy based on radical-basis function neural network (RBFNN) control was proposed for the floating offshore wind turbines (FOWT) bearing air-hydrodynamic coupling loads. Considering the effects of wind shear and tower shadow firstly, a more accurate aerodynamic model was established. The aerodynamic model was coupled with the hydrodynamic model to obtain the relative wind speed under the disturbance of wind and wave. On this basis, an individual pitch control method based on RBFNN was proposed. The RBFNN is used to approximate the unknown nonlinear function of the pitch control system. The adaptive rate was derived by Lyapunov method, and the weights of the neural network were adjusted online to improve the dynamic performance of the proposed pitch control system. The proposed control strategy and the traditional PI controller were compared in the combination of FAST-Matlab/Simulink. The results showed that the proposed method can effectively stabilize the output power of FOWT and reduce the load fluctuation and pitch oscillation of floating base to a certain extent.

Key words： Floating offshore wind turbines pitch control coupling of hydrodynamic and aerodynamic forces multi-degree of freedom

收稿日期: 2018-05-30 出版日期: 2019-09-20

PACS:	TM315
	P752

基金资助:国家自然科学基金（51777064）和湖南省自然科学基金（2018JJ2434）资助项目

通讯作者: 周腊吾男,1965年生,博士,教授,研究方向为新能源发电技术。E-mail：1021853001@qq.com

作者简介: 杨彬佑男,1993年生,硕士研究生,研究方向为新能源发电技术。E-mail：120830317@qq.com

引用本文:

周腊吾, 杨彬佑, 韩兵, 李飞龙, 胡舟. 漂浮式风机气-水动力耦合下的独立变桨控制方法[J]. 电工技术学报, 2019, 34(17): 3607-3614. Zhou Lawu, Yang Binyou, Han Bing, Li Feilong, Hu Zhou. The Individual Blade Pitch Control for the Floating Offshore Wind Turbines Bearing the Air-Hydrodynamic Coupling Loads. Transactions of China Electrotechnical Society, 2019, 34(17): 3607-3614.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.180919 https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I17/3607

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