Development of wind turbine blades
1, large scale
Enercon’s 6MW, 7MW wind turbine has been in Germany and Belgium, wind run successfully, GE’s 7MW units are being developed, Vestas of 6MW, 10MW unit is also the process of development, China’s 5MW wind turbine is also design being developed.
2, intelligent
wind generators to run the process, once the blade is under loading (temperature, wind speed, wind load, etc.) Chaoguo design load, leaf Zhuti crack, the outside leaves of lightning may cause damage such situations, early warning monitoring system will signal, in order to make timely adjustments to the blade, care and maintenance, to improve small wind turbine reliability.
3, for the transport of sub-blade
To facilitate the MW leaves the road transport, some companies have begun trying to make leaf section. For example, the German Enercon’s E1266MW wind turbine generators blades from the inside and outside the two leaves of the composition of the inner section near the blade root from the steel wind power generators manufacturing, outsourcing the formation of aerodynamic shape of the glass surface of steel shell.
4, thermoplastic composite blades
Wind turbine blades currently in use by thermosetting composite materials, it is difficult natural degradation. Some wind blade manufacturers started to manufacture thermoplastic composite blades – the “green leaf.”
Thermoplastic composite materials with recyclable, light weight, good shock resistance, short production cycle and a series of excellent performance. Thermoplastic composite blades, each large-scale wind turbine blades used in weight can be reduced by 10%, impact resistance greatly improved home wind generators manufacturing cycle reduced by at least 1 / 3, and can be recovered and reused.
However, the use of thermoplastic composite materials, high cost of blade technology, a thermoplastic composite materials for limited wind turbine blades of the key issues. Recently, the Irish wind energy company Gaoth Mitsubishi Heavy Industries of Japan and the United States Cyclics companies are jointly developed low-cost thermoplastic composite blade manufacturing technology. Thermoplastic composite materials are expected as technology continuous research of new deep water and the corresponding thermoplastic resin Kaifa, safe and efficient wind generators manufacture of thermoplastic composite blades Jiang gradually become Xian Shi.
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