About Wind resistance of photovoltaic bracket
More wind resistance studies are required in order to safely and rationally guide the wind resistance design of photovoltaic bracket structures because the wind load provisions in common standards are not reasonable. Key words: photovoltaic bracket, wind load, wind tunnel test, standard, finite element.
More wind resistance studies are required in order to safely and rationally guide the wind resistance design of photovoltaic bracket structures because the wind load provisions in common standards are not reasonable. Key words: photovoltaic bracket, wind load, wind tunnel test, standard, finite element.
Taking a flexible PV bracket with a span of 30 m and a cable axial force of 75 kN as the research object, we investigate the variation patterns of the support cables and wind-resistant cables under temperature decrease and increase scenarios.
Boundary layer wind tunnel tests were performed to determine wind loads over ground mounted photovoltaic modules, considering two situations: stand-alone and forming an array of panels. Several wind directions and inclinations of the photovoltaic modules were taken into account in order to detect possible wind load combinations that may lead to .
The pre-stressed flexible cable-supported photovoltaic (PV) systems (FCSPSs) are gradually becoming the preferred PV structure for large-span and mountain photovoltaic power plants. The wind-induced response of FCSPSs under negative wind conditions is more pronounced than under positive wind conditions. In this study, a series of two-way fluid .
It was discovered that the wind load was the most crucial factor when designing PV supports. Future research should concentrate on the sensible arrangement of the PV panel’s inclination angles and the improved wind resistance of the PV support system’s design. This gives a theoretical foundation for the wind-resistant design of PV panel .
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6 FAQs about [Wind resistance of photovoltaic bracket]
What is the wind load of a PV support?
The wind load is the most significant load when designing a PV support; thus, its value and calculation should be investigated. Different countries have their own specifications and, consequently, equations for the wind loads of PV supports.
Why is wind resistance important in PV power generation systems?
Therefore, wind resistance is essential for a safe, durable, and sustainable PV power generation system. There are three modes of support in PV power generation systems: fixed , flexible , and floating [4, 5]. Fixed PV supports are structures with the same rear position and angle.
What is the eccentricity of a wind-resistant PV system?
Regarding the wind-resistant design, the eccentricity of wind load has received much attention. Zhang et al. used different wind speeds to analyze the stress of PV system under 41° of tension, which showed that the wind load point deviates from that of the PV system geometry center, i.e., eccentric distribution.
Why do PV modules have wind-resistant anchor cables?
Due to the wind-resistant anchor cables, which are anchored to the foundation and set in both the windward and leeward zones, the vibration of the PV modules and load-bearing cables under wind suction is suppressed.
Do flexible PV support structures deflection more sensitive to fluctuating wind loads?
This suggests that the deflection of the flexible PV support structure is more sensitive to fluctuating wind loads compared to the axial force. Considering the safety of flexible PV support structures, it is reasonable to use the displacement wind-vibration coefficient rather than the load wind-vibration coefficient.
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.