Study on loading scheme for full-scale fatigue test of wind turbine blades

被引：0
|
作者：
An Z. [1 ]
Ma J. [1 ]
Ma Q. [1 ]
Zhang Y. [1 ]
机构：
[1] School of Mechatronics Engineering, Lanzhou University of Technology, Lanzhou
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2021年 / 42卷 / 10期
关键词：
Bending moments; Blades; Fatigue testing; Optimal design; Wind turbines;
D O I：
10.19912/j.0254-0096.tynxb.2019-1112
中图分类号：
学科分类号：
摘要：
A new full-scale fatigue test loading method is proposed and validated to overcome the shortcomings of large error in bending moment distribution and long test cycle in fatigue test of wind turbine blade. Firstly, the wind turbine blade in the fatigue test is simplified into a cantilever beam model and discretized. Based on this method, the natural frequency and the state transfer relationship between the wind turbine blades are calculated. Secondly, the excitation force required in the wind turbine blade fatigue loading system is calculated. Then, the single-point excitation and multi-point counterweight fatigue are analyzed and calculated. The main parameters affecting the distribution of test bending moments are found out by the actual test bending moments of wind turbine blades in the test scheme. Finally, multiple parameter optimization modeling is carried out to optimize the loading position, loading mass and loading point number, and the accuracy of the model is verified by a calulation example. The results show that the test method is reasonable and feasible, which can provide some guidance for wind turbine blade fatigue test technology and reliability evaluation. © 2021, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：250 / 257
页数：7
相关论文
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