Advantage:

Carbon fibres are made up of tens of thousands of bundles of carbon fibres, each of which has a very small diameter of about 0.005-0.010 mm. Due to the particularly strong bond structure between the carbon atoms, carbon fibres have high strength and stiffness. In addition, carbon fibre is lightweight, resistant to ultra-high temperatures and corrosion resistant.

1. Reduced blade weight

Carbon fibre has a lower density compared to traditional glass fibre, which can achieve lightweight wind turbine blades. Lightweight wind turbine blades can reduce the installation cost of the wind farm, but also reduces the load of the blade on the wind turbine, improving the reliability and stability of the entire wind power generation system.

2. Improve blade strength and stiffness

Carbon fibre has excellent strength and stiffness, which can significantly improve the bending, tensile and torsional properties of wind turbine blades. As a result, wind turbine blades can withstand greater wind loads, increasing the power output of the wind power generation system.

3. Increase blade life

Carbon fibre has excellent corrosion resistance, which can effectively prevent wind turbine blades from being eroded by environmental factors and extend the service life of the blades. In addition, due to the excellent fatigue properties of carbon fibre, the blade is not easy to fatigue fracture in the process of long-time use, further improving the reliability of wind turbine blades.

4. Improve the freedom of blade design

Carbon fibre can be individually designed and processed into complex shapes to meet the requirements of different wind turbines. This flexibility provides manufacturers with more room for innovation to develop more efficient and reliable wind turbine blades.

Applications

The main application of carbon fibre in wind turbine blades is the main beam, which can achieve a weight reduction of 20% to 30% compared to a comparable high-modulus glass fibre main beam blade. To 122 m long blade, for example, the weight reduction of the blade can significantly reduce the load transferred to the host due to self-weight, which in turn can reduce the hub, nacelle, tower and pile foundation and other structural components of the weight of 15% ~ 20%, effectively reducing the fan more than 10% of the overall cost. With the enhancement of carbon fibre blade strength and stiffness, it can reduce the dynamic deformation of the blade during operation, effectively improve the aerodynamic performance of the blade, and enhance the power generation efficiency of the wind turbine. Therefore, through the application of carbon fibre blades to reduce the load on the axle and tower, the output power of the wind turbine is smoother and more balanced, more efficient operation, and the carbon fibre composite material has a better fatigue resistance, and through the post-evaluation can also extend the life cycle of the blades, reduce the daily maintenance costs and other comprehensive costs.

The market prospect of carbon fibre industry for wind turbine blades is very broad. Despite the pressure of market competition and technological thresholds, the industry will grow in the future through technological innovation as well as policy support.