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ISSN 0254-0096 CN 11-2082/K

太阳能学报 ›› 2022, Vol. 43 ›› Issue (3): 442-448.DOI: 10.19912/j.0254-0096.tynxb.2020-0509

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预弯外形对风力机叶片气弹稳定性的影响

郭小锋1, 黄鑫祥1, 汪泉2, 张忍1   

  1. 1.中原工学院机电学院,郑州 450007;
    2.湖北工业大学机械工程学院,武汉 430068
  • 收稿日期:2020-06-04 发布日期:2022-09-28
  • 通讯作者: 郭小锋(1983—),男,博士、副教授,主要从事风力机气弹动力学方面的研究。mexf@foxmail.com
  • 基金资助:
    国家自然科学基金(51705545; 51975190)

INFLUENCE OF PRE-BEND SHAPE ON AEROELASTIC PERFORMANCE OF WIND TURBINE BLADES

Guo Xiaofeng1, Huang Xinxiang1, Wang Quan2, Zhang Ren1   

  1. 1. School of Mechanical Science & Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China;
    2. School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China
  • Received:2020-06-04 Published:2022-09-28

摘要: 为了研究预弯外形对风力机气弹稳定性的影响,以某2 MW低风速风电叶片为研究对象,采用外形参数化表达方法构造叶尖预弯量分别为3、4和5 m的叶片。基于SIMPACK软件建立并验证气-弹-控耦合的风力机整机模型,对配装不同预弯叶片的风力机进行仿真分析。结果显示,在湍流风况下,随着叶尖预弯量的增大,叶根载荷、叶尖附近截面的气弹变形量和动态失速程度都有明显增加;对预弯5 m叶片的动态气弹变形进行频域分析,发现在一阶摆振和扭转方向发生共振现象,表明过大的叶尖预弯设计量会使叶片产生气弹失稳问题。

关键词: 风力机叶片, 刚柔耦合, 气弹变形, 预弯外形, 气弹稳定性

Abstract: In order to study the effect of the pre-bend shape on the aeroelastic stability of wind turbines, by using the parametric modeling method, three blades with different pre-curved shape were constructed. Based on SIMPACK software, the multi-disciplinary model of wind turbines coupling of aerodynamics-elasticity-control was built. As a research object, the performances of a 2 MW wind turbine with different pre-bend blades were studied, the result shows that under turbulent wind conditions with the increase of pre-bend value of the blade-tip, the ultimate loads of the blade root and the dynamic deformations of the blade section near the blade-tip increased significantly. By through the frequency-domain analysis of the pre-bend 5 m blade, resonance occurs near the first natural frequency in edgewise and torsional deflection, which means that the oversize amount of the pre-bend value in blade-tip will cause instability problems.

Key words: wind turbine blades, rigid-flexible coupling, aero-elastic deformation, pre-bend shape, aero-elastic stability

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