Allowable deviation of photovoltaic bracket thickness

Cable-supported photovoltaic (PV) modules have been proposed to replace traditional beam-supported PV modules. The new system uses suspension cables to bear the loads of the PV modules and therefore has the characteristics of a long span, light weight, strong load capacity, and adaptability to complex terrains.

The optimized main beam adopts a section height of 100mm, a section width of 36mm, and a section thickness of 2mm. Compared to the original bracket, the optimized bracket has reduced weight by 8.459kg, with a weight reduction rate of 14.45%.

A material imperfection in the form of a locally reduced Elastic modulus by 10% resulted in a decrease of failure load by 70%. PV modules with Si thicknesses of 0.1, 0.15 and 0.2 mm are expected to crack under a uniform mechanical loading of 5400 Pa at different loads.

For flexible PV brackets, the allowable deflection value adopted in current engineering practice is 1/100 of the span length [32]. To ensure the safety of PV modules under extreme static conditions, a detailed analysis of a series of extreme scenarios will be conducted.

This paper presents a methodology for estimating the optimal distribution of photovoltaic modules with a fixed tilt angle in a photovoltaic plant using a packing algorithm (in Mathematica™ software) that maximizes the amount of energy absorbed by the photovoltaic plant.

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6 FAQs about [Allowable deviation of photovoltaic bracket thickness]

How safe are flexible PV brackets under extreme operating conditions?

Safety Analysis under Extreme Operating Conditions For flexible PV brackets, the allowable deflection value adopted in current engineering practice is 1/100 of the span length . To ensure the safety of PV modules under extreme static conditions, a detailed analysis of a series of extreme scenarios will be conducted.

What are the characteristics of a cable-supported photovoltaic system?

Long span, light weight, strong load capacity, and adaptability to complex terrains. The nonlinear stiffness of the new cable-supported photovoltaic system is revealed. The failure mode of the new structure is discussed in detail. Dynamic characteristics and bearing capacity of the new structure are investigated.

What is a new cable supported PV structure?

New cable supported PV structures: (a) front view of one span of new PV modules; (b) cross-section of three cables anchored to the beam; (c) cross-section of two different sizes of triangle brackets. The system fully utilizes the strong tension ability of cables and improves the safety of the structure.

What rack configurations are used in photovoltaic plants?

The most used rack configurations in photovoltaic plants are the 2 V × 12 configuration (2 vertically modules in each row and 12 modules per row) and the 3 V × 8 configuration (3 vertically consecutive modules in each row and 8 modules per row). Codes and standards have been used for the structural analysis of these rack configurations.

What are the structural static characteristics of a new PV system?

The structural static characteristics of the new PV system under self-weight, static wind load, snow load and their combination effect are further studied according to the Chinese design codes (Load Code For The Design Of Building Structures GB 2009-2012 and Code For Design Of Photovoltaic Power Station GB 50797-2012).

What is a PV support structure?

Support structures are the foundation of PV modules and directly affect the operational safety and construction investment of PV power plants. A good PV support structure can significantly reduce construction and maintenance costs. In addition, PV modules are susceptible to turbulence and wind gusts, so wind load is the control load of PV modules.

Allowable deviation of photovoltaic bracket thickness