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首页> 外文会议>Wind energy symposium 2018 >Structural Performance and Power Production of Wind Turbine Systems with Bend-Twist Coupled Blades in Underrated Wind Conditions
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Structural Performance and Power Production of Wind Turbine Systems with Bend-Twist Coupled Blades in Underrated Wind Conditions

机译：风力不足时带有弯扭耦合叶片的风力发电机系统的结构性能和发电量

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摘要

The implementation of bend-twist coupling effect on wind turbine blades on the structural performance and power production of wind turbine system exposed to underrated wind conditions are studied. The structural performance of wind turbine systems are evaluated by the decrease in damage equivalent loads in the whole wind turbine system and reduction in maximum fiber direction stresses in the blades with the exploitation of off-axis plies in the main spar caps of the wind turbine blades. Wind turbine models with designed GFRP bend-twist coupled blades are generated in a multi-body code which uses a superelement blade definition. 325-second transient aeroelastic analyses of wind turbine systems are performed for different constant wind definitions for power production evaluation, and structural performance is assessed based on the damage equivalent load reductions in the whole wind turbine system that is exposed to turbulent wind profiles for six-hundred seconds as stated in IEC standards, and lessening in fiber direction stresses in the blades. Results show that for underrated, rated, and overrated average hub height wind speeds, bend-twist coupled blades ensure considerable reductions in the loads at the cost of slight reduction in generated power in underrated wind speeds.
机译：研究了风力涡轮机叶片上弯扭耦合效应对暴露于低估风况下的风力涡轮机系统的结构性能和发电量的影响。通过降低整个风力涡轮机系统中的等效损伤负荷以及减少叶片中最大纤维方向应力以及利用风力涡轮机叶片主翼缘中的离轴层来评估风力涡轮机系统的结构性能。带有设计的GFRP弯扭耦合叶片的风力涡轮机模型以使用超元素叶片定义的多体代码生成。针对不同的恒定风速定义对风力涡轮机系统进行325秒的瞬态气动弹性分析，以进行发电量评估，并根据整个风力涡轮机系统的等效当量减少量来评估结构性能。按照IEC标准规定的100秒，并减少了刀片的纤维方向应力。结果表明，对于低估，额定和高估的平均轮毂高度风速，弯扭耦合叶片可确保负荷的大幅降低，但代价是在低速风速下发电量会略有降低。

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  • 来源
    《Wind energy symposium 2018》|2018年|403-415|共13页
  • 会议地点 Kissimmee(US)
  • 作者

    Özgün Sener; Altan Kayran;

  • 作者单位

    METUWind Center for Wind Energy, Department of Aerospace Engineering, Middle East Technical University, Ankara, Turkey, 06800;

    METUWind Center for Wind Energy, Department of Aerospace Engineering, Middle East Technical University, Ankara, Turkey, 06800;

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  • 正文语种 eng
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