The cable-suspended PV system has gained increasing popularity due to its large span and good site adaptability. However, this structure is quite sensitive to wind actions, and wind-induced module damage and
The prototype structure of the flexible PV support adopted in this study is shown in Fig.1. The height of the columns is 6 m. The span of the flexible PV support is 33 m, which is consisted of
The wind-induced response and vibration modes of the flexible photovoltaic (PV) modules support structures with different parameters were investigated by using wind tunnel based on elastic
Liu and colleagues investigated the wind-induced response and critical wind speed of a 33-m span flexible PV support structure through wind tunnel tests based on elastic models, finding that 180° and 0° are the most
4 14th International Conference on Wind Engineering – Porto Alegre, Brazil – June 21-26, 2015 Where the term F is the force acting along a given axis, and A is the projected area of the PV
The area-averaged net pressure C pn_ave on each module can be derived thus, (2) C p n _ a v e = ∑ i n C p u _ i-C p d _ i A i A m where C pu_ i and C pd_ i are the pressure
Firstly, the Finite Element (FE) discretization is discussed. Next, the natural frequencies for tilt angles α = 0 ° and 20 ° of the PV module are computed. Then, the pressure
Semantic Scholar extracted view of "A Research Review of Flexible Photovoltaic Support Structure" by 晓诚 李 Wind tunnel pressure tests were conducted on a 1:100 scale model of
Basic Wind Speed, (V) The ASCE 7-16 provides a wind map where the corresponding basic wind speed of a location can be obtained from Figures 26.5-1A to 1C. From Figure 26.5-1A, Cordova, Memphis, Tennessee
Flexible photovoltaic (PV) support structures are limited by the structural system, their tilt angle is generally small, and the effect of various factors on the wind load of flexibly
Specifically, as the pretension in the load-bearing cables increases from 22 to 102 kN, the flutter critical wind speed rises from 17.1 to 21.6 m/s. By contrast, the pretension
In this paper, we mainly consider the parametric analysis of the disturbance of the flexible photovoltaic (PV) support structure under two kinds of wind loads, namely, mean
Du Hang, Xu Haiwei, Zhang Yuelong, et al. Wind pressure characteristics and wind vibration response of long-span flexible photovoltaic support structure. Journal of Harbin Institute of Technology, 2022, 4: 25 (in Chinese) doi:
Adjustable-tilt solar photovoltaic systems (Gönül et al., 2022) typically include multiple support columns for the upper structure, leading to a larger panel area and longer
In the solar photovoltaic power station project, PV support is one of the main structures, and fixed photovoltaic PV support is one of the most commonly used stents. For the the actual demand
The wind vibration coefficients in different zones under the wind pressure or wind suction are mostly between 2.0 and 2.15. Compared with the experimental results, the current Chinese national standards are relatively conservative in the equivalent static wind loads of flexible PV support structure. 1. Introduction
Aeroelastic model wind tunnel tests The wind-induced vibration response of flexible PV support structure under different cases was studied by using aeroelastic model for wind tunnel test, including different tilt angles of PV modules, different initial force of cables, and different wind speeds.
When the flexible PV support structure is subjected to wind pressure, the maximum of mean vertical displacement occurs in the first rows at high wind speeds. The shielding effect greatly affects the wind-induced response of flexible PV support structure at α = 20°.
For aeroelastic model tests, it can be observed that the flexible PV support structure is prone to large vibrations under cross winds. The mean vertical displacement of the flexible PV support structure increases with the wind speed and tilt angle of the PV modules.
Li and his team studied the instability mechanisms and failure criteria of large-span flexible PV supports, concluding that triangular and cross diagonal braces fail at critical wind speeds of 51 m/s and 46 m/s, respectively. 2. Materials and Methods 2.1. Flexible PV Mounting Structure Geometric Model
Modal analysis reveals that the flexible PV support structures do not experience resonant frequencies that could amplify oscillations. The analysis also provides insights into the mode shapes of these structures. An analysis of the wind-induced vibration responses of the flexible PV support structures was conducted.
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