the use of wind turbines blade material direction

Wind power is the development of new energy in the early application of broad, mature technologies of renewable clean energy. The first wind power generation in 1891 was established in Denmark, with wind power technology, mature, declining manufacturing costs, power costs decreased year by year, with national government policy support, since the 70s of last century the world's oil crisis, wind power the development and utilization of resources to develop gradually. With the advancement of science and technology, wind power generation from renewable clean energy stands out as the most valuable industrial development of a new energy, wind power being the world's rapid pace. 1994 to 2000, world wind power installed capacity of the average growth rate of 31%.

Wind turbine blade is the key component, need good design, reliable quality and superior performance. Harsh environment of the leaves requires: good stiffness, fatigue strength and mechanical properties of the best, able to withstand storms and other extreme conditions of the test, with good corrosion resistance, UV resistance and lightning performance; generation costs than Low, low maintenance costs.

Leaves are generally used beam shell structure, the structure of the rib sandwich beam, which filled foam covered with fiberglass skin of the shell structure. Leaves from the blade root to the tip longitudinal cross-section tapering to meet the requirements of twisted blades and reduce blade weight, that is made of equal strength beam.

Wind turbine blades using the materials of different length according to the choice of different materials, the most commonly used is glass fiber reinforced polyester resin, glass fiber reinforced vinyl resin, glass fiber reinforced epoxy and carbon fiber reinforced epoxy resin .

Conditions established in the generator power, how to improve power generating efficiency, maximum wind generators has been wind power goal, the Wind Energy with leaf shape, length and area are closely related, leaf size was mainly depends on the manufacture of leaf material. The material leaves the lighter, higher strength and stiffness, load capacity of leaves of the effective use of the stronger, more leaves can be done, it's wind energy capacity will be. Therefore, high strength, durability, good composite large-scale wind turbine blades is the material of choice.

Wind turbine blades in composite materials development process of Yanjiu, Germany and Denmark wind energy use is better for Guo Jia Zi Yuan for Taixing leaf material system shape 设计, structural design, manufacturing process to the substantial research and development work, and achieved fruitful results. Can target different areas of wind power needs, choose the best design and manufacturing technology, production of composite materials for the different needs of wind turbine blades.

Currently used in commercial wind power generation capacity of the motor is generally 1.5 ~ 2.0 MW, with supporting composite blade length of 30 ~ 40 meters. Now the world's largest installed capacity of wind generators 5 MW, rotating up to 126 meters in diameter. This is the material, structure and process of the successful combination of three expression.

In the early stages of wind power, due to smaller wind power generators, blades have required the composite material is relatively small, leaf quality and uniformity of the impact on generators and pillar base is not very apparent; and when people die off molding process to the atmosphere when volatile styrene environmental pollution on the health hazards caused by the operator does not lead to sufficient knowledge. Therefore, the first composite blade manufacturing of small basic with a simple hand lay-up process. With the rising power of wind turbines, installation of generators, the pillar base and capture wind energy blades made of composite materials is growing.