基于多自由度运动条件下风力机动力学特性研究

张步恩; 余烈; 杨磊; 赵振宙; 刘惠文; 郑源

doi:10.19912/j.0254-0096.tynxb.2022-1276

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (7) : 303-310. DOI: 10.19912/j.0254-0096.tynxb.2022-1276

基于多自由度运动条件下风力机动力学特性研究

张步恩¹, 余烈², 杨磊³, 赵振宙⁴, 刘惠文⁴, 郑源⁴

作者信息 +

DYNAMIC CHARACTERISTICS OF WIND TURBINE WITH MULTIPLE ROTATIONAL DEGREES OF FREEDOM

Zhang Buen¹, Yu Lie², Yang Lei³, Zhao Zhenzhou⁴, Liu Huiwen⁴, Zheng Yuan⁴

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文章历史 +

摘要

该文提出耦合无规则、多自由度旋转运动的风力机试验方案,通过物理模型试验,研究风电场阵列布置、不同风力机轴向间距工况下,各排风力机来流速度、功率及其波动特性。结合功率时间尺度积分的概念,探究其与风力机平均输出功率的关系,并建立预测功率波动特征的数学模型。研究结果表明：风力机的来流速度有大尺度、低频率和小尺度、高频率的信号特征,从功率时间尺度积分的趋势可看出,处于下游的风力机,功率波动逐渐增加。由功率能谱特性曲线可知功率波动的能量随着频率的增大而衰减,在低频率段衰减曲线近似f^-2的变化规律;在高频率段,能谱特性曲线近似f ^-5/3-2的变化规律。

Abstract

A project of model wind turbine with irregular and multi-degree of freedom motions was designed in this paper. Laboratory experiments were carried out to quantify incoming flow and power fluctuation characteristics of model wind turbines under different axial spacing conditions in wind farm within uniform arrays. The characteristics of the mean output power with the power integral time scale were studied. Then a math model for predicting the characteristics of the power fluctuation characteristics was deduced. Results suggested that the characteristics of incoming flow are large scales in the low frequency domains and small scales in the high frequency domains. We found some points from the evolution of power integral length scale that the power fluctuation characteristics of the model turbines increase in the streamwise. The energy of power fluctuations decreases as the frequency increases, but the slope of the energy curve is similar to f^-2in the low frequency domains, and is similar to f ^-5/3-2in the high frequency domains.

导出引用

张步恩, 余烈, 杨磊, 赵振宙, 刘惠文, 郑源. 基于多自由度运动条件下风力机动力学特性研究[J]. 太阳能学报. 2023, 44(7): 303-310 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1276

Zhang Buen, Yu Lie, Yang Lei, Zhao Zhenzhou, Liu Huiwen, Zheng Yuan. DYNAMIC CHARACTERISTICS OF WIND TURBINE WITH MULTIPLE ROTATIONAL DEGREES OF FREEDOM[J]. Acta Energiae Solaris Sinica. 2023, 44(7): 303-310 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1276

中图分类号： TK89

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