Horizontal displacement of photovoltaic support

What is the maximum vertical displacement of a PV module?

It can be found from Figs. 27 and 28 that the largest value of the extreme vertical displacement at the edge of the PV module under wind velocity of 18.5 m/s occurs at row R11 under the wind direction of 180°, and is 333 mm. This is close to 1/100 of the span of the flexible PV support structure.

How much vertical displacement should a flexible PV support have?

This is close to 1/100 of the span of the flexible PV support structure. Until now, there are no particular regulations on the deformation of the flexible PV supports. In the design of these structures, the extreme vertical displacement less than 1/100 of the span was often used.

What is the inclination angle of the flexible PV support?

The span of the flexible PV support is 33 m, which is consisted of 28 PV modules. The inclination angle between the PV modules and the horizontal plane is 15°, and the PV modules are mounted on two steel cables C1 and C2. Furthermore, steel cable C3 is set to reduce the vertical deformation under the actions of wind and snow loadings.

How stiff is a tracking photovoltaic support system?

Because the support structure of the tracking photovoltaic support system has a long extension length and the components are D-shaped hollow steel pipes, the overall stiffness of the structure was found to be low, and the first three natural frequencies were between 2.934 and 4.921.

What are the dynamic characteristics of photovoltaic support systems?

Key findings are as follows. Dynamic characteristics of tracking photovoltaic support systems obtained through field modal testing at various inclinations, revealing three torsional modes within the 2.9–5.0 Hz frequency range, accompanied by relatively small modal damping ratios ranging from 1.07 % to 2.99 %.

Do flexible PV modules support structures have a critical wind velocity?

Furthermore, little attentions were paid on the critical wind velocity of the flexible PV modules support structures. In this study, wind-induced response and critical wind velocity of a 33-m-span flexible PV support structure was experimentally studied by using a non-contact video displacement measuring system.