Photovoltaic Stent plays a key role in the field of solar photovoltaic power generation, and is an important infrastructure to ensure the stable operation of photovoltaic systems and efficient power generation.
I. Functional Analysis
1.Supporting and Fixing Role
The primary function of PV mounting is to firmly support PV modules. It needs to bear the weight of the PV module, including the load under various environmental conditions, such as wind pressure, snow pressure, etc. It ensures the stability of the PV module in the outdoor environment. It ensures that the PV modules are stably installed in the outdoor environment and will not be loosened, shifted or damaged by natural factors.
2.Angle adjustment and optimisation
Through reasonable design and installation, PV mounts can adjust PV modules to the best angle for receiving sunlight. Factors such as latitude, terrain and seasonal changes in different regions will affect the angle of sunlight, and PV mounts can manually or automatically adjust the angle according to these conditions to maximise the efficiency of PV modules in absorbing solar energy, thus increasing the amount of PV power generated.
3.Protecting PV modules
In addition to providing physical support and angle optimisation, a PV mount can also provide a degree of protection for the PV module from damage caused by the external environment. For example, it prevents PV modules from coming into direct contact with moisture, dust, etc. on the ground, reducing the risk of corrosion and contamination. At the same time, under adverse weather conditions, such as heavy rain, hail, etc., the structural design of the bracket can play a role in cushioning and dispersing the impact force, reducing the possibility of damage to PV modules.
Second, type introduction
1.Fixed-type PV Racking
Fixed bracket is the most common type, and its mounting angle is generally fixed after the installation is completed. This type of bracket is simple in structure and low in cost, and it is suitable for those areas where the distribution of solar energy resources is relatively stable and the requirements for power generation efficiency are not particularly high. For example, in some inland areas, the sunlight irradiation angle changes are relatively small, fixed photovoltaic racking can meet the basic power generation needs, while its lower cost also makes in the construction of large-scale photovoltaic power plant has certain advantages.
2.Tracking type PV racking
Tracking bracket is relatively complex and intelligent, it can adjust the orientation of PV modules according to the position of the sun in real time. They are divided into single-axis tracking and dual-axis tracking. Single-axis tracking bracket usually can only rotate around an axis, such as east-west tracking of the sun's altitude angle changes; dual-axis tracking bracket can be rotated in two axes at the same time, can more accurately track the sun's position, so that the PV module is always perpendicular to the direction of incidence of the sunlight, thereby significantly improving the power generation efficiency. However, the tracking bracket costs more, requires more maintenance work, and has higher reliability requirements for the control system, so it is relatively less used in areas that are more sensitive to cost or have limited maintenance conditions.
Third, the development trend
1.Material Innovation
With the continuous progress of science and technology, photovoltaic support materials are also constantly innovating. New high-strength, lightweight and corrosion-resistant materials are gradually being used, such as carbon fibre composite materials. These materials can not only reduce the weight of the bracket, reduce transport and installation costs, but also improve the strength and durability of the bracket to adapt to more severe environmental conditions.
2.Intelligent control
The future of the photovoltaic support will pay more attention to intelligent control. Through the integration of advanced sensors and control systems, real-time monitoring of the sun's position, environmental parameters and the operating status of the bracket and other information, and automatically adjust the angle and attitude of the bracket. At the same time, remote monitoring and management can also be achieved to improve operation and maintenance efficiency and reduce labour costs. For example, using IoT technology, connecting the PV mounts to the cloud platform enables real-time transmission and analysis of data, so that potential problems can be identified and solved in a timely manner.
3.Integration with buildings
The trend of integrating PV mounts with buildings is also becoming more and more obvious. Organic integration of PV mounts with buildings at the architectural design stage can not only realise the function of PV power generation, but also play a role in decoration and shading as part of the building. For example, installing PV modules on the roof and wall of a building makes the building itself a small power station, realising self-sufficiency in energy, and at the same time conforming to the development concept of green building.
As an important part of the photovoltaic industry, the continuous development and innovation of photovoltaic mounting will provide strong support for the widespread application and sustainable development of solar photovoltaic power generation, and promote the wider use of clean energy worldwide.
