Analysis of classification and design principle of solar intelligent tracking system

23 Sep , 2021

In recent years, as the development and construction of photovoltaic power stations continue to reduce the cost of kilowatt electricity, “affordable Internet access” has become a new term in the rapid rise of the domestic photovoltaic market. The return on investment of photovoltaic power stations in the industry is mainly based on improving the efficiency and reliability of power generation. Solar intelligent tracking system can well adapt to complex terrain, so as to adjust measures to local conditions, comprehensively improve the photovoltaic power generation of solar energy utilization efficiency, has been widely used in the photovoltaic industry.


Classification of solar intelligent tracking system


According to the adjustment Angle of the bracket, the photovoltaic intelligent system can be divided into fixed adjustable, flat uniaxial, oblique uniaxial and biaxial trackers. Based on the estimated increased power generation, generally speaking, flat single-axis can improve power generation by 10%-20%, oblique single-axis can improve power generation by 20%-25%, and dual-axis can improve power generation by up to 40%. Among them, flat uniaxial risk is relatively low, oblique uniaxial and biaxial risk is higher.


1. Flat single axis tracking system


Compared with the traditional fixed bracket tracking system, the intelligent tracking system can improve the power generation efficiency better.


The uniaxial, oblique uniaxial and biaxial tracking system to compare the three products, cost-effective integrated advantages of single shaft, biaxial of uneven distribution of land resources is fixed support two or three times, although the power efficiency can be up to 40%, but the bracket cost to 3-4 yuan/tile, efficiency while raised, but the initial investment cost is too large; The inclined single axis is between the flat single axis and the double axis, and the land resource occupation and the support input cost are about two times of the flat single axis. In practical application, flat single axis system is divided into standard flat single axis and flat single axis with dip Angle. On the same platform, compared with the standard flat single axis, the power generation efficiency of flat single axis with dip Angle can be improved by 5-10%. Compared with the traditional bracket, the standard flat single axis can achieve 10-15% increase, and the flat single axis with dip Angle can achieve 18-23% increase. To sum up, from the comprehensive efficiency and generation cost of the whole photovoltaic power station, flat single shaft is the most cost-effective product.


2. Oblique uniaxial tracking system


The principle of solar intelligent tracking system is to change the Angle of photovoltaic panel with the change of sunlight.


Design principle of intelligent tracking system is simpler, because the sun illuminate Angle has been constantly changing, the traditional fixed photovoltaic panels after using tracking technology, become flexible, as changes with the change of the sun like a sunflower, the received solar radiation increases greatly, thus makes the plant capacity was improved as a whole.


3. Dual-axis tracking system


According to different terrain, adjust measures to local conditions to design, the system can achieve three to six linkage, middle to drive, both sides follow linkage, allow wide slope, north and south to 0 to 25 degrees, can be accomplished by the east-west 0 to 25 degrees, and allow the foundation settlement 120 mm without human intervention, in the complicated terrain have strong applicability, construction completely can be done with the slope, To give full play to its maximum lighting tracking effect, the maximum degree of improvement of power generation efficiency.


At present, domestic and foreign power station developers recognize and use the solar intelligent tracking system, improve the efficiency and innovation integration of components, inverters, cables, and photovoltaic intelligent tracking system to achieve the improvement of photovoltaic power generation efficiency.


The key of intelligent tracking system is reliability


The most important point of making products is to ensure product quality. The key is how to ensure the maximum power generation efficiency and product reliability in 25 years. From the product system design, in theory to solve the tracking system is reliable, whether with stability. Then from different terrain, different process aspects to achieve all-terrain tracking.


The key of intelligent tracking system is reliability


Solar intelligent tracking system allows many enterprises to gain a lot of benefits, power stations are not vulnerable to the impact of disaster weather is due to the tracking technology and photovoltaic panels can adjust the Angle at any time. In addition, photovoltaic power stations are equipped with tracking systems, which are conducive to closer integration with agricultural production. They can operate flexibly in environments such as ponds, mountains and wasteland, which will have advantages over ordinary power stations. Photovoltaic tracking systems can also be installed in agro-light and fishing light complementary systems. The system can realize the complementary agriculture, fish pond and photovoltaic, in the case of limited land resources, to truly maximize the owner’s income.