PV Tracking System is divided into fixed adjustable, horizontal single-axis, inclined single-axis, and dual-axis trackers according to the adjustment angle of the bracket. According to estimates, horizontal single-axis can increase power generation by 10% to 20%, inclined single-axis can increase power generation by 20% to 25%, while dual-axis can increase power generation by up to 40%. The reliability risk of horizontal single-axis is relatively low, while the risk of inclined single-axis and dual-axis is higher.
Classification of PV Tracking System
Horizontal single-axis tracking system: The rotation axis of the PV bracket is parallel to the water surface and rotates around the vertical axis in a north-south direction to track the incidence angle of sunlight on the light-receiving surface in one direction as vertically as possible.
The principle of inclined single-axis PV Tracking System: The rotation axis of the PV bracket is installed at an angle to the horizontal plane, and rotates around the vertical axis in a north-south direction to track the incidence angle of sunlight on the light-receiving surface in one direction as vertically as possible.
The design principle of inclined single-axis PV tracking system is not complicated. Because the angle of sunlight is constantly changing, after applying tracking technology, traditional fixed photovoltaic panels are no longer "inanimate", but can follow the sun like sunflowers, increasing the amount of received solar radiation, and thereby improving the overall power generation of the power station.
Dual-axis PV Tracking System: The full-terrain tracking system is designed according to different terrain. The system can achieve linkage between three to six rows, with driving in the middle and linkage on both sides. It allows a large range of slope angles, can achieve 0-25° east-west and 0-25° north-south, and allows for 120 mm of ground settlement without manual intervention. It has strong applicability to complex terrain and can be constructed and built according to the slope to fully utilize its maximum light tracking effect and maximize its power generation efficiency.
Horizontal Single-axis PV Tracking System: Good cost-effectiveness
Compared with the fixed bracket in the traditional mode, the threshold for the tracking system is low, and implementing intelligentization can better improve its power generation efficiency.
Looking at the comprehensive price-performance ratio of the three products of horizontal single-axis, inclined single-axis, and dual-axis tracking systems, the horizontal single-axis is more advantageous. Although the dual-axis can increase power generation efficiency by 40%, its bracket cost is high, and its land resource occupancy is two to three times that of the fixed bracket. Although it improves efficiency, the initial investment cost is high. The inclined single-axis falls between the horizontal single-axis and the dual-axis, with bracket investment cost and land resource occupation about twice that of the horizontal single-axis.
The horizontal single-axis system is further divided into standard horizontal single-axis and tilted horizontal single-axis. Under the same platform, the tilted horizontal single-axis can improve power generation efficiency by 5-10%. The standard horizontal single-axis can achieve a growth of 10-15% compared with traditional brackets, and the tilted one can achieve 18-23%. Therefore, in terms of the overall cost of PV power generation and comprehensive efficiency, the horizontal single-axis is its best product.
The PV tracking system brings many benefits to the PV system. Thanks to tracking technology, photovoltaic panels can adjust their angle at any time, and the power station is not easily affected by catastrophic weather.
In addition, the installation of the tracking system in the photovoltaic power station can be more closely integrated with agricultural production. It has advantages in environments such as ponds, mountains, and wastelands and is superior to traditional power stations. Agrivoltaic and aquavoltaic complementary systems can also install PV tracking systems. The system can achieve the complementary use of agriculture, fish ponds, and photovoltaics, and truly maximize the owner's income in the limited land resources.
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