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Investigation on parameter sensitivity on aerodynamic instability of single-axis PV trackers
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Wenyong MA1, 2, 3, Xiaohan KANG3, Lei HU4, Yangyang CUI4, Yaya JIA2, Zhenkai ZHANG3
Journal of Vibration Engineering | 2025, 38(5) : 941 - 949
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Journal of Vibration Engineering | 2025, 38(5): 941-949
Investigation on parameter sensitivity on aerodynamic instability of single-axis PV trackers
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Wenyong MA1, 2, 3, Xiaohan KANG3, Lei HU4, Yangyang CUI4, Yaya JIA2, Zhenkai ZHANG3
Affiliations
  • 1.State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures，Shijiazhuang Tiedao University，Shijiazhuang 050043，China
  • 2.Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province，Shijiazhuang 050043，China
  • 3.School of Civil Engineering，Shijiazhuang Tiedao University，Shijiazhuang 050043，China
  • 4.Shanghai Electric Power Equipment Co.，Ltd.，Generator Plant，Shanghai 200240, China
Published: 2025-05-10 doi: 10.16385/j.cnki.issn.1004-4523.2025.05.006
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The present study aims to improve the aerodynamic stability of a single-axis PV tracker. The effects of turbulence intensity, natural frequency and damping ratio on the aerodynamic stability of the single-axis PV tracker are studied by a sectional model wind tunnel test to reveal the sensitivity of these parameters. The results show unstable torsional vibration of the single-axis PV tracker system in a large tilt angle range with strong aerodynamic coupling and self-excited characteristics. The critical wind speed for the unstable vibration is low. The critical wind speed is high at 0° tilt angle (PV module is horizontal). The increase of turbulence intensity leads to the increase of the unstable vibration tilt angle range, which is not good for the aerodynamic stability. Increasing the damping ratio has an inconsiderable effect on increasing the critical wind speed at small tilt angles (0° and 5°). However, it works well when the tilt angle is larger than 15°. With the increase of natural frequency, the critical wind speed is significantly increased at all tilt angles.

single-axis PV tracker  /  torsional aerodynamic instability  /  wind-tunnel test  /  critical wind speed  /  protection from strong wind
Wenyong MA, Xiaohan KANG, Lei HU, Yangyang CUI, Yaya JIA, Zhenkai ZHANG. Investigation on parameter sensitivity on aerodynamic instability of single-axis PV trackers[J]. Journal of Vibration Engineering, 2025 , 38 (5) : 941 -949 . DOI: 10.16385/j.cnki.issn.1004-4523.2025.05.006
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Year 2025 volume 38 Issue 5
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2025.05.006
  • Receive Date：2023-03-24
  • Online Date：2026-02-12
  • Published：2025-05-10
Article Data
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History
  • Received：2023-03-24
  • Revised：2023-05-22
Funding
Affiliations
    1.State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures，Shijiazhuang Tiedao University，Shijiazhuang 050043，China
    2.Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province，Shijiazhuang 050043，China
    3.School of Civil Engineering，Shijiazhuang Tiedao University，Shijiazhuang 050043，China
    4.Shanghai Electric Power Equipment Co.，Ltd.，Generator Plant，Shanghai 200240, China
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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