Quasi-steady response and LLTR control of a wind turbine blade with bending-torsion coupled

被引：0
|
作者：
Liu T. [1 ]
Chang L. [1 ]
机构：
[1] College of Mechanical & Electronic Engineering, Shandong University of Science & Technology, Qingdao
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2018年 / 37卷 / 13期
关键词：
Bending-torsion coupled; Circumferential asymmetric stiffness; Flutter suppression; Hardware-in-the-loop simulation platform; LLTR control; Quasi-steady response;
D O I：
10.13465/j.cnki.jvs.2018.13.019
中图分类号：
学科分类号：
摘要：
Quasi-steady responses of a wind turbine blade and its theoretical control process based on LQG with loop transfer recovery (LLTR) were studied to solve divergent instability of a composite thin-walled blade with bending-torsion coupled. The blade structure was modeled as a thin-walled single closed chamber airfoil based on laminated composite with circumferential asymmetric stiffness. The middle-line trajectory of the airfoil was the S809Ⅱairfoil type line. A quasi-steady aerodynamic model was extracted from stall aerodynamic models of helicopter blade, and after modified it was suitable for studying critical states of classical flutter and stall flutter of wind turbine blade. The LLTR control in two cases of input loop-based transfer recovery and output loop-based transfer recovery was investigated in detail. Through comparing the blade's bending-torsion coupled responses with simulated controller responses and singular value Bode diagram, the stability of the LLTR control algorithm and its superiority in flutter suppression were verified. The real-time effects of the LLTR control algorithm were also examined with a hardware-in-the-loop simulation platform. © 2018, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：123 / 129
页数：6
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