| 海上浮式水平轴风力机气动特性研究 |
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| 引用本文： | 刘利琴,肖昌水,郭颖.海上浮式水平轴风力机气动特性研究[J].太阳能学报,2021(1):294-301. |
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| 作者姓名： | 刘利琴 肖昌水 郭颖 |
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| 作者单位： | 天津大学水利工程仿真与安全国家重点实验室 |
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| 基金项目： | 国家自然科学基金(51879190,52001230);中国博士后基金面上项目(2019M651042);天津大学自主创新基金(2006)。 |
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| 摘 要： | 以NREL-5 MW风力机为研究对象,基于叶素动量理论,考虑动态失速、风剪切及塔影效应等气动修正模型,开发Matlab非定常气动载荷计算程序,研究浮式水平轴风力机气动特性。结果表明:为保证风力机气动载荷模拟的正确性,气动修正模型必不可少;基础运动对风力机气动性能有显著影响,基础运动使风力机输出功率增大,但同时存在较大的振荡幅度,导致功率输出不稳定;叶片变桨失效导致功率输出更加不稳定。
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| 关 键 词： | 海上浮式风力机 气动载荷 变桨控制 叶素动量理论 动态失速 |
STUDY ON AERODYNAMIC CHARACTERISTICS OF FLOATING HORIZONTAL WIND TURBINE |
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| Liu Liqin,Xiao Changshui,Guo Ying.STUDY ON AERODYNAMIC CHARACTERISTICS OF FLOATING HORIZONTAL WIND TURBINE[J].Acta Energiae Solaris Sinica,2021(1):294-301. |
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| Authors: | Liu Liqin Xiao Changshui Guo Ying |
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| Affiliation: | (State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China) |
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| Abstract: | Based on blade element momentum(BEM)theory,several modification models are considered,including dynamic stall,wind shear and tower shadow effect and so on. The MATLAB simulation program is developed to calculate the unsteady aerodynamic load. Taking NREL 5 MW wind turbine as example,the aerodynamic characteristics of floating horizontal wind turbine are studied. The results show that the modified models are necessary for the correctness of simulation of aerodynamic loads. The motions of the floating foundation may increase the output power of wind turbine. Meanwhile,the amplitude oscillations of aerodynamic load are larger,which lead to the instability of the output power. The blade-pitch fault makes the output power more unsteady. |
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| Keywords: | floating wind turbines aerodynamic loads blade pitch control blade element momentum theory dynamic stall |
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