Wind-Turbine-Blade-风力发电叶片.pptxVIP

Wind Turbine Blade CONTENT 1 Wind Power Wind is a clean, abundant, and renewable energy resource that can be exploited to produce electricity. The wind energy is an indirect form of the solar energy, since they are the temperature differences and the pressure-induced in the atmosphere by absorbing solar radiation, which set in motion the winds. The rotor mission in a wind turbine is transforming this kinetic energy of wind to mechanic energy. 1 Wind Power Advantage: lower cost Non-three-dimensional facilities→protect land and ecology Renewable energy, environmentally friendly, clean Disadvantage: Unstable wind speed Interfere with birds Location restrictions Loud noise Low conversion efficiency 2 Wind Turbine Blade Wind turbine is a power plant made up of blades, generator, transmission system, energy storage equipment, tower and electrical system and so on. Wooden blade cloth skin blade Carbon fiber composite blade 2 Wind Turbine Blade 1. Blade material development and evolution Steel beam fiberglass skin blade Aluminum alloy chord extrusion blade Glass fiber reinforced plastic(GFRP) composite blade 2 Wind Turbine Blade 2. Blade composite material: E fiberglass composites: E-glass fibers are a family of calcium aluminosilicate glasses with low alkali metal oxide content and high resistivity. This composite material has great strength, good process matching, low price, but it has high density and is not suitable for large-scale blades. S fiberglass composites: S-glass is a magnesium alumino-silicate glass with a fiber strength twenty-five percent higher than E-glass fibers, but more expensive than E-glass fibers. S-glass fiber composites still can not meet the larger blade production. 2 Wind Turbine Blade 2. Blade composite material: The compromise solution: Use a mixture of glass fiber and carbon fiber Carbon fiber composites: Carbon fiber composite blades have twice the stiffness of fiberglass composite blades. Carbon fibe