About Photovoltaic support purlin structure
Purlins support the array’s structural stability by uniformly distributing the panel weight over the rafters.
Purlins support the array’s structural stability by uniformly distributing the panel weight over the rafters.
Disclosed in the present invention is a purlin structure for a photovoltaic support, comprising a mounting seat and a clamping plate.
Abstract: In the intelligent photovoltaic tracker brackets， cold-formed purlins were used to support the photovoltaic panels， and located spannig the horizontal single-axis and the module frame. Firstly， the minimum compliance of the structures was taken as the target and relative densities of elements were taken as the design variables .
Photovoltaic panels are installed on the photovoltaic support purlins. The reciprocating rotation (tilt angle) of the axis bar allows the panel to receive direct sun. The structure is symmetrical with respect to the axis bar, and the axis bar provides a fixed axis for torsional deformation.
The purlin of photovoltaic stent and the photovoltaic panels are connected as an integral structure, which forms a purlin-panel system. The photovoltaic panel provides restraint to the purlin, consequently, it significantly impacts on the buckling behaviour of purlins (Vrany, 2006, Gao and Moen, 2012, Zhao et al., 2014, Yuan et al., 2014).
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6 FAQs about [Photovoltaic support purlin structure]
How many pillars does a photovoltaic support system have?
The tracking photovoltaic support system consisted of 10 pillars (including 1 drive pillar), one axis bar, 11 shaft rods, 52 photovoltaic panels, 54 photovoltaic support purlins, driving devices and 9 sliding bearings, and also includes the connection between the frame and its axis bar. Total length was 60.49 m, as shown in Fig. 8.
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 %.
What are the mechanical properties of a tracking photovoltaic support system?
In terms of the mechanical properties of the actual components of the tracking photovoltaic support system, the bar element and shell element were used to simulate different components: beam elements were mainly used to simulate the axis bar, photovoltaic support purlins and pillars. Shell elements were used to simulate the photovoltaic panel.
What is a finite element model of tracking photovoltaic support system?
Finite element model of tracking photovoltaic support system. The tracking photovoltaic support system consisted of 10 pillars (including 1 drive pillar), one axis bar, 11 shaft rods, 52 photovoltaic panels, 54 photovoltaic support purlins, driving devices and 9 sliding bearings, and also includes the connection between the frame and its axis bar.
How many rods are in a photovoltaic axis bar?
The axis bar is composed of 11 shaft rods. Photovoltaic panels are installed on the photovoltaic support purlins. The reciprocating rotation (tilt angle) of the axis bar allows the panel to receive direct sun. The structure is symmetrical with respect to the axis bar, and the axis bar provides a fixed axis for torsional deformation.