Photovoltaic bracket is the "skeleton" that supports photovoltaic modules, and its performance directly affects the operational stability, power generation efficiency and investment income of photovoltaic power stations, which plays an important role in the construction of photovoltaic power stations. Photovoltaic bracket is a special functional bracket for installing, supporting and fixing photovoltaic modules, which can be divided into fixed bracket and tracking bracket according to whether it can follow the sun to rotate.
1. Fixed bracket
Fixed bracket structure is simple, good stability, low initial investment and maintenance costs, fixed bracket with excellent stability and low early investment costs, in the photovoltaic bracket market occupies a large share, is the current mainstream type.
2. Tracking bracket
The tracking bracket can be rotated in real time to follow sunlight, both to improve power generation gain and to smooth the output curve. The tracking bracket and the double glass can reduce the Angle between the component and the direct sunlight, obtain more solar irradiation, achieve higher power generation, and effectively improve power generation efficiency. Photovoltaic tracking bracket can generally bring 15%-20% power generation increase for photovoltaic power stations, but the power station using tracking bracket needs to increase a certain amount of initial investment costs, and needs to bear a certain amount of device operation risk and later maintenance costs.
Photovoltaic support for raw material concerns
The photovoltaic system needs to operate smoothly in the harsh natural environment for more than 25 years, which means that the photovoltaic bracket needs to have strong mechanical properties such as wind pressure resistance, snow pressure resistance, seismic resistance, corrosion resistance, and so on, to ensure normal operation in various harsh environments such as wind sand, rain, snow, and earthquakes.
In addition, due to the installation and fixing of photovoltaic brackets and other components, raw materials need to be divided and punched, etc., if the pre-galvanized steel plate is directly used, it is easy to form corrosion at the steel plate incision and punching after processing.
Therefore, the previous practice for a long time was to carry out by hot dip galvanizing after the steel plate processing, the advantage of this method is that the incision and punching parts can be covered by hot dip galvanizing after processing, but the disadvantage is that the post-treatment process and supporting transportation, storage and other links are more, the cost is higher, not environmental protection and no quality assurance. With the development of the photovoltaic industry, the market is also in urgent need of a product solution that can replace hot dip galvanizing.
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