全风向下平单轴光伏支架风致扭转气动失稳试验研究  

An experimental study on wind-induced torsional aerodynamic instability of single-axis trackers under all wind directions

作　　者：马文勇 王贺朋[1] 纪寅峰 邹创 MA Wenyong;WANG Hepeng;JI Yinfeng;ZOU Chuang(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Key Laboratory of Road and Railway Engineering Safety,Ministry of Education,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Wind Engineering and Wind Energy Utilization Engineering Technology Innovation Center of Hebei Province,Shijiazhuang 050043,China;Shanghai Electric Power Generation Equipment Co.,Ltd.Generator Plant,Shanghai 200240,China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室,石家庄050043 [3]河北省风工程和风能利用工程技术创新中心,石家庄050043 [4]上海电气电站设备有限公司发电机厂,上海200240

出　　处：《振动与冲击》2024年第20期221-228,281,共9页Journal of Vibration and Shock

基　　金：河北省自然科学基金杰出青年基金项目(E20212153);石家庄铁道大学研究生创新资助项目(YC2023077)。

摘　　要：针对平单轴光伏支架风致扭转气动失稳问题,采用全气弹模型,在风洞中复现了光伏支架的扭转气动失稳现象。通过对扭转响应和临界风速的分析,明确了平单轴光伏支架的风致振动特性。结果表明:光伏支架在-45°~45°的倾角范围内都可能发生扭转气动失稳,光伏组件水平放置时临界风速较高;小倾角下阻尼对临界风速影响较小,大倾角下增加阻尼可以提高临界风速;随着来流与光伏支架法线方向夹角(风向角)的增大,临界风速逐渐增加;斜风向下光伏支架尾流端部振动比迎风端部更剧烈。Aiming at the problem of wind-induced torsional aerodynamic instability of single-axis trackers,this study used a full aeroelastic model,and reproduced the phenomenon of torsional aerodynamic instability of the single-axis tracker in a wind tunnel test.Through the analysis of torsional response and the critical wind speed,the vibration characteristics of the single-axis trackers were clarified.The results show that torsional aerodynamic instability occurs in the tilt angle range of-45°-45°,and the critical wind speed is higher in tilt angle of 0°,when the module is placed horizontally,than that in the other tilt angles.Damping has little effect on the critical wind speed at small tilt angles,and increasing damping at large tilt angle can increase the critical wind speed.With the increase of the angle between the incoming flow and the normal direction of the single-axis tracker(wind direction),the critical wind speed gradually increases.The vibration of the wake end of the single-axis tracker under oblique wind is more severe than that of the windward.

关 键 词：平单轴光伏支架 气弹模型试验 临界风速 斜风向 阻尼比 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3