Vertical axis wind turbine with double-arm double-triangular-structure fan blades
A wind turbine, vertical axis technology, applied in the field of power machinery, which can solve the problems of affecting power quality, impossible starting, insufficient ability to stress and deformation, etc.
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[0018] The current large wind turbines are mainly 2-3MW horizontal axis models. Horizontal axis wind turbines usually use thin three-needle epoxy resin airfoil blades, the root end is fixed on the hub, connected to the main shaft through the hub, drives the main shaft to rotate and output mechanical energy, and then converts the mechanical energy into constant frequency through the generator and converter The constant voltage electric energy is input into the grid. The three-pin blade adopts the single-end fixed form of the cantilever beam structure. Therefore, the blade has a large structural stress, low structural strength, and is easily deformed and damaged by the wind force. This is the most fatal weakness of the horizontal axis fan. Therefore, when the power is increased to the ultra-high power level of 10MW, the blades must use carbon fiber materials with higher structural strength, resulting in a substantial increase in material costs and process costs, especially in te...
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