About Photovoltaic power generation wind load shape coefficient
Balancing the wind loads and buoyancy force is important to prevent floating structures from sinking or overturning. In this study, numerical simulations were performed to predict the wind loads on solar panels at various turbulence intensities (0.1–0.3) and wind speeds (35–75 m/s).
Balancing the wind loads and buoyancy force is important to prevent floating structures from sinking or overturning. In this study, numerical simulations were performed to predict the wind loads on solar panels at various turbulence intensities (0.1–0.3) and wind speeds (35–75 m/s).
When designing PV support systems, the wind load is the primary load to consider for PV power generation. The amount of the PV wind load is influenced by various elements, such as the panel inclination angle, wind direction angle, body type coefficient, geometric scale, shielding effect, and template gap.
The shielding effect between front and rear rows of PV arrays were studied. At last, the shape coefficients and wind vibration coefficients of the flexible PV support structures were proposed for design purposes.
The wind load on the PV arrays shows significant interference due to marked flow pattern changes after the wind passes through the modules, making the load on the internal modules more complex. In addition to the tilt angle, wind direction, and ground clearance, row interference notably impacts the wind load.
To investigate the wind load distribution in a float PV plant, the computational fluid dynamic (CFD) analysis was conducted with variables including wind direction (inlet angles) and three wind speeds (36.2, 51.7, and 70 m/s) in PV modules in the floating structure.
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6 FAQs about [Photovoltaic power generation wind load shape coefficient]
How does wind load affect PV power generation?
A wind load accelerates the cooling of PV panels, thereby reducing the cell’s temperature and increasing the power generation efficiency for PV power generation. However, the PV panel generates wind-induced vibration due to the wind load, which can damage the system (Figure 12).
How is wind load calculated in a PV structure?
The loads applied to the design of PV structures were described earlier. In the structural design of the PV structure, the wind load is assumed to be applied in the horizontal direction, and the basic assumption is that it is calculated by considering the projected area of the structure [ 11, 12 ].
How is wind load evaluated in a PV power plant?
Wind load is evaluated as relatively low because only the projected area in the horizontal direction is considered in the design standard. Therefore, the wind load applied to all arrays of the PV power plant was evaluated through the CFD analysis.
How does wind load affect PV panel support?
2. Influencing Factors of Wind Load of PV Panel Support 2.1. Panel Inclination Angle The angle β between the PV panel and the horizontal plane is called the panel inclination (Figure 3). Because of the PV panel’s varying inclination angle, a PV power generation system’s wind load varies, impacting the system’s power generation efficiency. Figure 3.
Does wind load affect a floating PV system?
The load distribution caused by the wind load in the floating PV system was assessed using possible parametric studies with design parameters including wind speed, wind direction, and installation angle of PV modules. In this study, the design load was confirmed to install a floating PV power generation structure in salt-reclaimed land.
What is the wind vibration coefficient of flexible PV support structure?
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
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