Experimental study on flutter performance of flexible photovoltaic system by segmental model test

被引：0
|
作者：
Li S. [1 ,2 ]
Ma J. [1 ,2 ]
Liu J. [1 ,2 ]
Chen Z. [1 ,2 ]
机构：
[1] College of Civil Engineering, Hunan University, Changsha
[2] Hunan Provincial Key Laboratory of Wind Engineering and Bridge Engineering, Hunan University, Changsha
来源：
Tumu Gongcheng Xuebao/China Civil Engineering Journal | 2024年 / 57卷 / 02期
关键词：
aerodynamic countermeasures; critical wind velocity; flexible photovoltaic supports; flutter; inclined angle of photovoltaic module; segmental test model; wind tunnel tests;
D O I：
10.15951/j.tmgexb.22111107
中图分类号：
学科分类号：
摘要：
The flexible photovoltaic supports are easy to have large vibration under wind load due to their low frequency and light weight. Taking an actual flexible photovoltaic project as the engineering background, the flutter performance of the flexible photovoltaic supports is studied by referring to the research experience of bridge wind resistance. Firstly, considering the strict similarity ratio, the elastic suspension segmental model system was designed and manufactured, and the dynamic characteristics were tested. Then, wind tunnel tests of elastic suspension segmental models with different PV module inclinations (-39°~+39°) were carried out to study the variation of wind-induced response of PV modules with wind speed, and the flutter critical wind speed values of flexible PV segmental models at various inclinations were obtained. Finally, the effects of two aerodynamic measures on improving the flutter stability of flexible PV supports were discussed. The results show that under the working condition of 0° to 39° positive tilt angle, the flutter critical wind speed of flexible PV supports decrease first and then increase with the PV module tilt angle. The minimum flutter critical wind speed appears in the range of 12° to 21° PV module tilt angle, which is converted into the actual wind speed of 9. 6m/s. Under the working condition of negative inclination angle of -39° to 0°, the flutter critical wind speed also decrease first and then increase with the the tilt angle of the PV module. The minimum flutter critical wind speed appears in the range of -21° to -12° PV module tilt angle, which is converted into the actual wind speed of 10. lm/s. It is difficult to effectively improve the flutter critical wind speed of flexible PV supports by aerodynamic measures with central stabilizer. © 2024 Chinese Society of Civil Engineering. All rights reserved.
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页码：25 / 34
页数：9
相关论文
共 17 条
  • [1] Dai Songyuan, The Current state and prospects of the solar photovoltaic industry in China, Engineering Sciences, 18, 4, pp. 51-54, (2016)
  • [2] Radu A, Axinte E, Theohari C., Steady wind pressures on solar collectors on flat-roofed buildings [J], Journal of Wind Engineering and Industrial Aerodynamics, 23, pp. 249-258, (1986)
  • [3] Zhang Qingzhu, Liu Zhizhang, Qi Xiaohui, Et al., Solar photovoltaic panels wind load testing and analysis, Energy Technology, 31, 2, pp. 93-95, (2010)
  • [4] Kopp G A, Banks D., Use of the wind tunnel test method for obtaining design wind loads on roof-mounted solar arrays, Journal of Structural Engineering, 139, 2, pp. 284-287, (2013)
  • [5] Ma Wenyong, Sun Gaojian, Liu Xiaobing, Et al., Tests for wind load distribution model of solar panels, Journal of Vibration and Shock, 36, 7, pp. 8-13, (2017)
  • [6] Ma Wenyong, Ma Chengcheng, Wang Caiyu, Et al., Wind tunnel experimental study on the wind load interference effect of solar panel arrays, Journal of Experiments in Fluid Mechanics, 35, 4, pp. 19-25, (2021)
  • [7] Han Xiaole, Study on wind load of solar photovoltaic array [D], (2016)
  • [8] Xu Ning, Li Xuhui, Gao Chenchong, Et al., Analysis of shape coefficients of wind loads of photovoltaic system, Acta Ener-giae Solaris Sinica, 42, 10, pp. 17-22, (2021)
  • [9] He Guangling, Jiang Huaqing, Shan Jiandong, Et al., Research of wind load model in photovoltaic array [J], Electric Power Construction, 33, 10, pp. 5-8, (2012)
  • [10] Wang Xinming, Study on the influence factors of wind load of photovoltaic arrays [D], (2022)
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