Wind generator

A technology for wind turbines and rotors, which is applied to wind turbines, wind energy power generation, wind turbine control, etc., can solve problems such as unfavorable blade stress, and achieve the effects of convenient adjustment and control, improved stress performance, and increased service life.

Inactive Publication Date: 2020-05-19
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the wind rotor is arranged in the upwind direction, and the blades are folded in the win

Method used

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Embodiment Construction

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0044] Combine below Figure 1 to Figure 4 The wind power generator 1000 according to the embodiment of the present invention will be described.

[0045] like Figure 1 to Figure 4 As shown, according to the wind power generator 1000 of the embodiment of the present invention, the wind power generator 1000 is a downwind horizontal axis wind power generator 1000 of oblique axis pitch type folded forward, including a wind rotor 2 and a folding angle control assembly 3, the wind rotor 2 sets are fixed on one end of the horizontal shaft 1,...

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Abstract

The invention discloses a wind generator. The wind generator is a forward-folded inclined shaft variable pitch type downwind-direction horizontal shaft wind generator, and comprises a wind wheel and afolding angle control assembly, wherein the wind wheel fixedly sleeves one end of a horizontal shaft; the wind wheel comprises a hub and multiple inclined folding blades, wherein roots of the multiple inclined folding blades are obliquely hinged to the hub; and the folding angle control assembly is connected with the wind wheel and used for simultaneously controlling folding angles of the multiple inclined folding blades, in this way, attack angles of the inclined folding blades are changed to adjust the power of the wind generator, and meanwhile when the wind generator is under working conditions of being lower than rated wind speed, in the rated wind speed and higher than the rated wind speed, the resultant force borne by the multiple inclined folding blades is roughly in the spanwise directions of the inclined folding blades. According to the wind generator, the stress performance of the inclined folding blades is greatly improved, the service life of the inclined folding blades isprolonged, the output power is stable, adjustment and control are convenient, and the structure is simple and reliable.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a wind power generator. Background technique [0002] As a clean energy, wind energy has been widely used in my country in recent decades. In the past forty years, the single-unit capacity of wind turbines has increased by about 40 times, and it is expected to break through 10MW or 20MW in the next decade. As the size of wind rotors continues to increase, large wind turbines also face many technical problems. Blades rank second in the cost of each component of a wind turbine. Reducing the quality of blades can not only directly bring economic benefits, but also indirectly reduce the quality and cost of other components (towers, yaw systems, etc.). Realizing the lightweight of blades has become a current research hotspot. Existing large-scale wind turbines mostly use blade rotation and pitch adjustment to adjust power when the wind speed is higher than the rated w...

Claims

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Application Information

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IPC IPC(8): F03D1/06F03D7/04
CPCF03D1/0658F03D7/0224F03D7/0236F03D7/028F03D7/04Y02E10/72
Inventor 孟浩然曾攀雷丽萍
Owner TSINGHUA UNIV
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