In recent years, with the application of digitalization and AI technology, solar trackers have performed well in increasing power generation and reducing the cost of electricity, and have gradually become the main force in the construction of global photovoltaic power plants. However, in the actual application process, the stability of the power station is also constantly exposed, especially the damage to the trackers caused by wind-induced resonance, which has become the number one problem that threatens the safety of the power station. In the face of difficult problems, Grace Solar’s GS-Light Intelligent Tracking System came into being. What is it capable of not being afraid of strong winds? Let's take a look!

01.Wind resistance performance of GS-Light Intelligent Tracking System

Compared with the traditional single-point driving method, Grace Solar’s 2P tracker adopts a multi-point drive device, which makes the torque of the main beam to be shared, the force on the column is reduced, and the structural rigidity of the system is increased by 20%. The damping ratio is the ability of the standard system to return to a stable state under external force. The larger the damping ratio, the faster the tracker can return to the stable state.

The conventional array of GS-Light Intelligent Tracking System is equipped with 4 dampers, and its damping ratio can be increased by 2 to 3 times. Effectively reduce the magnitude of dynamic wind load, increase the protection angle of strong wind, change the aerodynamic shape, thereby increasing the critical wind speed of flutter, making the system more resistant to wind. In the application of specific large-scale power station projects, differentiate the design. In view of the characteristics of high wind exposure on the outside, columns are added to strengthen the rigidity of the spindle, and the lowest coefficient is used inside to help customers reduce costs and ensure the smooth operation of the project.

02.What is the operating mechanism of the Wind Protection Mode?

The natural climates around the world are different, and the load specifications are different. If the support cannot adapt to the actual conditions of the project, the maintenance cost in the later period will increase significantly, which directly affects whether the investment benefits of the power station can be realized. In view of the load codes of various countries, there are many defects in the use of tracking system design input coefficients. Therefore, the tracking system must conduct a reasonable and compliant wind tunnel test to ensure that the calculation meets the requirements of the actual project.

Grace Solar’s photovoltaic tracking system has passed the atmospheric boundary layer wind tunnel test. This is the key to verifying the quality of the photovoltaic tracking system, and it is also the pursuit of Grace Solar’s R&D strength.

03. Other features

Passed rigorous wind tunnel test, obtained tracker static wind load pressure, torque coefficient, dynamic amplification factor; obtained tracker stable critical wind speed through wind tunnel elastic model test, and guided wind protection strategy to avoid flutter and galloping

In addition to excellent wind resistance, GS-Light Intelligent tracking system has other obvious advantages:

Terrain Adaption：Up to 20% N-S slope,East-west no limits

Easy Installation: 1xP , 2xP and Multi-drive solution, easy to be installed

Tracking method:Astronomical algorithm + closed- loop control (AI)

Power supply :Powered by PV strings, back-up Li-ion battery,reducing LCOE cost.

Land Utilization: Up to 90 modules per tracker, increase rate of utiliazation of land