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A wind turbine blade based on fractal design

A technology of wind turbine blades and blades, which is applied in the field of trailing edge structure of wind turbine blades, can solve the problems of increased cost of passive control, and achieve the effect of cost reduction

Active Publication Date: 2018-04-03
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, as wind turbines gradually show the trend of large-scale and large-capacity development, the cost of stall passive control will increase

Method used

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  • A wind turbine blade based on fractal design
  • A wind turbine blade based on fractal design
  • A wind turbine blade based on fractal design

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Embodiment Construction

[0024] The specific embodiment of the present invention will be further described below in conjunction with the accompanying drawings, but this should not limit the protection scope of the patent of the present invention.

[0025] figure 1 It is a sectional view of an airfoil of a wind turbine blade structure designed based on fractals according to the present invention. The airfoil of the wind turbine blade in the example of the present invention adopts DU40 in the Dutch DU airfoil family widely used in the wind power industry at present, but the airfoil structure of the present invention is not limited thereto.

[0026] Depend on figure 1 It can be seen that the wind turbine blade of the present invention mainly includes a blade main body 1 and a blade fractal trailing edge 2 .

[0027] The blade main body 1 can be made of fiberglass, and the blade fractal trailing edge 2 can also be made of fiberglass, which is characterized by high strength, light weight and aging resist...

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Abstract

The invention relates to a wind turbine blade based on fractal theory design. The wind turbine blade comprises a blade main body and a blade fractal tail edge, wherein the blade main body is located at the front part of the blade relative to the incoming flow direction, the blade fractal tail edge is located at the rear part of the blade relative to the incoming flow direction, a plurality of holes are distributed in the blade fractal tail edge, and the holes run through the pressure surface and the suction surface of the whole wind turbine blade. The wind turbine blade is simple in structure, a mechanism for inhibiting stalling is easy to achieve, and compared with a device with passive control on stalling characteristics, the cost is greatly lowered.

Description

technical field [0001] The present invention generally belongs to the field of wind power generation, and in particular relates to a fractal-based design of a trailing edge structure of a wind turbine blade. The designed trailing edge structure can improve the stall characteristics of the wind turbine blade. Background technique [0002] China is rich in wind energy resources. Vigorously developing wind power generation is of great significance to adjusting energy structure, ensuring energy security, coping with climate change and promoting sustainable social and economic development. Among them, wind turbines, as key equipment for wind power generation, play an extremely important role in the development of wind power in my country. . Wind turbine blades determine the efficiency of wind energy utilization and are the core components of the entire wind turbine. [0003] When the angle of attack of the incoming flow of the blade increases to the stall condition, the gas no lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D80/00
CPCF05B2240/30F05B2280/4011Y02E10/72Y02P70/50
Inventor 阳君李春叶舟袁全勇罗红张楠
Owner UNIV OF SHANGHAI FOR SCI & TECH
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