Research on Wake Characteristics and Output Characteristics of Umbrella Wind Turbines#br#

doi:10.3969/j.issn.1004-132X.2022.14.014

Abstract

Abstract: In order to adapt to the harsh application environment of distributed wind turbines，while meeting the needs of power regulation and fan self-protection，a new type of umbrella wind turbine was proposed. In order to study the influences of the umbrella wind turbine wheel contraction angles on the wake characteristics and output characteristics，the numerical simulation and wind tunnel tests were carried out respectively. The results show that when the contraction angles of the wind turbine wheels increase，the swept areas decrease，the wake diameters decrease，the axial influence ranges of the wakes increase，and the speed recovery slows down. At the same time，the strengths of the tip vortex may decrease. The strengths of the central vortex first increase and then decrease. However，the strengths of the central vortex are always greater than those of the tip vortex，so the speed losses behind the blade roots are always greater than those of behind the tips. Besides，the wind tunnel tests also verify the effectiveness of the wind wheel contraction angles on power control.

Key words: umbrella wind turbine, wake, vorticity, output characteristic

摘要： 为适应分布式风力发电机的恶劣应用环境，同时满足功率调控以及风机自我保护的需求，提出了一种新型伞形风力机。为研究伞形风力机风轮收缩角对尾流特性和输出特性的影响，分别进行了数值模拟和风洞试验。研究结果表明：伞形风力机风轮收缩角增大后，扫掠面积减小，尾流直径减小，尾流轴向影响范围增大，速度恢复减缓，同时会导致叶尖涡强度减小，中心涡强度先增大后减小，但是中心涡强度一直大于叶尖涡强度，所以叶根后的速度亏损要一直大于叶尖后的速度亏损。此外，风洞试验也验证了风轮收缩角对功率控制的有效性。

关键词: 伞形风力机, 尾流, 涡量, 输出特性

CLC Number:

TK83

LIU Dong, BAO Daorina, LIU Xujiang, LIU Jiawen, WU Shengsheng, WANG Peng, TANG Di. Research on Wake Characteristics and Output Characteristics of Umbrella Wind Turbines#br#[J]. China Mechanical Engineering, 2022, 33(14): 1751-1759.

刘东, 包道日娜, 刘旭江, 刘嘉文, 吴胜胜, 王鹏, 唐迪. 伞形风力机尾流特性及输出特性研究[J]. 中国机械工程, 2022, 33(14): 1751-1759.

References

［1］马剑龙，吴雨晴，李学彬，等. 动态风载对尾迹亏损及涡量耗散的影响研究［J］. 工程热物理学报， 2020， 41（10）：2446-2451.
MA Jianlong， WU Yuqing， LI Xuebin， et al. Influence of Dynamic Wind Load on Wake Loss and Voricity Dissipation［J］. Journal of Engineering Thermophysics， 2020， 41（10）：2446-2451.
［2］张旭耀，杨从新，李寿图，等. 风剪切来流下风力机流场特性与风轮气动载荷研究［J］. 太阳能学报， 2019， 40（11）：3281-3288.
ZHANG Xuyao， YANG Congxin， LI Shoutu， et al. Study on the Flow Field Characteristics of Wind Turbine and the Aerodynamic Load of Wind Turbine under Wind Shear［J］. Act Energiae Sinica， 2019， 40（11）：3281-3288.
［3］许昌，黄海琴，施晨，等. 基于LBM-LES方法的典型复杂地形作用下风力机尾流数值模拟［J］. 中国电机工程学报， 2020， 40（13）：4236-4244.
XU Chang， HUANG Haiqin， SHI Chen， et al. Numerical Simulation of Wind Turbine Wake under Typical Complicated Terrain Based on LBM-LES Method［J］. Proceedings of the Chinese Society of Electrical Engineering， 2020， 40（13）：4236-4244.
［4］张立茹，汪建文，孙晓颖，等. 水平轴风力机尾流扩散特性的数值研究［J］. 工程热物理学报， 2013， 34（9）：1663-1666.
ZHANG Liru， WANG Jianwen， SUN Xiaoying， et al. Numerical Study on the Wake Diffusion Characteristics of Horizontal Axis Wind Turbine［J］. Journal of Engineering Thermophysics， 2013， 34（9）：1663-1666.
［5］刘鑫，闫姝，郭雨桐，等. 复杂地形下风力机尾流数值模拟研究和激光雷达实验对比［J］. 太阳能学报， 2020， 41（3）：1-7.
LIU Xin， YAN Shu， GUO Yutong， et al. Comparison of Numerical Simulation Study and Lidar Experiment of Wind Turbine Wake under Complex Terrain［J］. Acta Energiae Sinica， 2020， 41（3）：1-7.
［6］韩玉霞，汪建文，孙博，等. 湍流强度对水平轴风力机尾迹速度恢复影响机理的实验研究［J］. 太阳能学报， 2019， 40（3）：649-655.
HAN Yuxia， WANG Jianwen， SUN Bo， et al. Experimental Study on the Influence Mechanism of Turbulence Intensity on the Wake Speed Recovery of Horizontal Axis Wind Turbine［J］. Acta Energiae Sinica， 2019， 40（3）：649-655.
［7］包道日娜，刘旭江，王小雪，等. 小型水平轴可变偏心距风力机输出特性分析［J］. 中国机械工程， 2020， 31（18）：2196-2205.
BAO Daorina， LIU Xujiang， WANG Xiaoxue， et al. Analysis of Output Characteristics of Small Horizontal Axis Variable Eccentricity Wind Turbine［J］. China Mechanical Engineering， 2020， 31（18）：2196-2205.
［8］PLATTS J， LIU W Y. Developing Chinese Wind Energy Technology［C］∥国家自然科学基金面向新能源的设计与制造中青年学者研讨会. 广州， 2008：47-53.
PLATTS J， LIU W Y. Developing Chinese Wind Energy Technology［C］∥National Natural Science Foundation of China， Young and Middle-aged Scholars Seminar on New Energy Design and Manu-facturing. Guangzhou， 2008：47-53.
［9］CRAWFORD C， PLATTS J. Updating and Optimization of a Coning Rotor Concept［J］. Journal of Solar Energy Engineering， 2008， 130（3）：1-8.
［10］EGUCHI H， YOSHIDA K， NISHI M. An Experimental Study on Self-output-control Characteristics of Micro Downwind Rotor with Coning Soft Blades［J］. Science China， 2010， 53（1）：100-104.
［11］LIU S H， LUO X W， EGUCHI H， et al. An Experimental Study on Self-output-control Characteri-stics of Micro Downwind Rotor with Coning Soft Blades［J］. Science in China Series E：Technological Sciences， 2010， 53（1）：100-104.
［12］刘旺玉，罗远强. 大型风力机伞形风轮柔性连接机构设计与分析［J］. 华南理工大学学报（自然科学版）， 2013， 41（11）：62-67.
LIU Wangyu， LUO Yuanqiang. Design and Analysis of Flexible Connecting Mechanism of Umbrella Wind Wheel for Large Wind Turbine［J］. Journal of South China University of Technology（Natural Science Edition）， 2013， 41（11）：62-67.
［13］张勇. 大型水平轴风力机伞形风轮的静动态特性分析与结构仿生研究［D］. 广州：华南理工大学， 2011.
ZHANG Yong. Analysis of Static and Dynamic Characteristics and Structural Bionic Research of Umbrella-shaped Rotor of Large Horizontal Axis Wind Turbine［D］. Guangzhou：South China University of Technology， 2011.
［14］包道日娜，尚伟，李恒，等. 伞形风力机功率输出特性的试验研究［J］. 排灌机械工程学报， 2017， 35（6）：508-514.
BAO Daorina， SHANG Wei， LI Heng， et al. Experimental Study on Power Output Characteristics of Umbrella Wind Turbines［J］. Journal of Drainage and Irrigation Machinery Engin， 2017， 35（6）：508-514.
［15］李恒. 伞形风力机调节机构的设计计算与实验研究［D］. 呼和浩特：内蒙古工业大学， 2016.
LI Heng. Design Calculation and Experimental Research on the Regulating Mechanism of Umbrella-shaped Wind Turbine［D］. Hohhot：Inner Mongolia University of Technology， 2016.
［16］郭晓东. 伞形风力机三维建模及结构动力学分析［D］. 呼和浩特：内蒙古工业大学， 2017.
GUO Xiaodong. Three-dimensional Modeling and Structural Dynamics Analysis of Umbrella Wind Turbines［D］. Hohhot：Inner Mongolia University of Technology， 2017.
［17］包道日娜，郭晓东，李常春，等. 收缩角对伞形风力发电机应力应变特性的影响研究［J］. 太阳能学报， 2018， 39（9）：2576-2584.
BAO Daorina， GUO Xiaodong， LI Changchun， et al. Research on the Influence of Contraction Angle on the Stress-strain Characteristics of Umbrella-shaped Wind Turbines［J］. Acta Energia Sinica， 2018， 39（9）：2576-2584.
［18］包道日娜，张晓阳，高晨鸣，等. 1 kW伞形风力发电机的设计与试验研究［J］. 可再生能源， 2013， 31（5）：68-71.
BAO Daorina， ZHANG Xiaoyang， GAO Chenming， et al. Design and Test Research of 1 kW Umbrella Wind Turbine［J］. Renewable Energy， 2013， 31（5）：68-71.

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Research on Wake Characteristics and Output Characteristics of Umbrella Wind Turbines#br#

伞形风力机尾流特性及输出特性研究

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