柯世堂, 王同光, 胡丰, 赵林, 葛耀君. 基于塔架-叶片耦合模型风力机全机风振疲劳分析[J]. 工程力学, 2015, 32(8): 36-41. DOI: 10.6052/j.issn.1000-4750.2014.02.0102
引用本文: 柯世堂, 王同光, 胡丰, 赵林, 葛耀君. 基于塔架-叶片耦合模型风力机全机风振疲劳分析[J]. 工程力学, 2015, 32(8): 36-41. DOI: 10.6052/j.issn.1000-4750.2014.02.0102
KE Shi-tang, WANG Tong-guang, HU Feng, ZHAO Lin, GE Yao-jun. WIND-INDUCED FATIGUE ANALYSIS OF WIND TURBINE SYSTEM BASED ON TOWER-BLADE COUPLED MODEL[J]. Engineering Mechanics, 2015, 32(8): 36-41. DOI: 10.6052/j.issn.1000-4750.2014.02.0102
Citation: KE Shi-tang, WANG Tong-guang, HU Feng, ZHAO Lin, GE Yao-jun. WIND-INDUCED FATIGUE ANALYSIS OF WIND TURBINE SYSTEM BASED ON TOWER-BLADE COUPLED MODEL[J]. Engineering Mechanics, 2015, 32(8): 36-41. DOI: 10.6052/j.issn.1000-4750.2014.02.0102

基于塔架-叶片耦合模型风力机全机风振疲劳分析

WIND-INDUCED FATIGUE ANALYSIS OF WIND TURBINE SYSTEM BASED ON TOWER-BLADE COUPLED MODEL

  • 摘要: 以某5 MW特大型风力机为例,提出了风力机全机结构风振疲劳的时域分析方法。采用谐波合成法和改进的叶素-动量理论产生了风力机运营状态的气动载荷,对风力机塔架-叶片耦合结构进行了非线性风振时域分析。基于时程结果并结合线性累积损伤理论对风力机全机关键部位的风振疲劳寿命进行了预测,该方法充分考虑了风剪切、塔影、尾流影响、塔架-叶片之间的气动和模态干扰作用、叶片旋转效应的影响。算例分析表明,该文预测方法可有效估算水平轴风力机全机结构的疲劳损伤问题,相关研究结论可为超大型风力机全机结构的疲劳寿命预测提供科学依据。

     

    Abstract: Taking a 5 MW large wind turbine system as an example, the prediction method of wind-induced fatigue of wind turbine system was proposed. The aerodynamic loads on wind turbine system were calculated with harmonic superposition method and modified blade-element momentum theory, then the nonlinear time-history wind-induced responses of wind turbine tower-blade coupled structure were analyzed, in which the wind shear, tower shadow, wake effect, tower-blade aerodynamic interaction, rotational effects were taken into account. Based on the calculating results the wind-induced fatigue life was predicted with linear cumulative damage theory. The fatigue residual life can be estimated accurately by the prediction methods, which provides the scientific basis for the fatigue life prediction of large wind turbines system.

     

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