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Optimization design method of blades of wind turbine based on topology optimization of structure

A wind turbine blade and optimization design technology, applied in the direction of calculation, special data processing applications, instruments, etc., can solve the problems of increased blade load, heavy blade mass, affecting the overall operation efficiency of wind turbines, etc., to achieve the optimization of anti-fatigue performance, The effect of improving load resistance

Active Publication Date: 2012-01-25
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0007] Due to the above-mentioned structure of the horizontal axis wind turbine blades in the prior art, the quality of the blades is too heavy, the cost of the blades increases, and the load on the blades also increases, thereby affecting the overall operating efficiency of the wind turbine.

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  • Optimization design method of blades of wind turbine based on topology optimization of structure
  • Optimization design method of blades of wind turbine based on topology optimization of structure
  • Optimization design method of blades of wind turbine based on topology optimization of structure

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0035] In an exemplary embodiment of the present invention, the main structure of a horizontal axis wind turbine blade includes a web 4 , upper and lower spar caps 3 , 5 and a skin 1 .

[0036] In this embodiment, holes are provided on the web 4 and the upper and lower spar caps 3, 5 along the radial direction of the blade. image 3 It is a structural schematic diagram of the horizontal axis wind turbine blade web and spar cap according to the embodiment of the present invention. Such as image 3 As shown, the opening may be a rectangular opening. The number, size and arrangement position of the rectangular openings are determined according to the optimization and verification results. By setting reasonable openings on...

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Abstract

The invention discloses an optimization design method of blades of a horizontal-axis wind turbine based on the topology optimization of the structure, each blade comprises a web plate (3), spar caps (3, 5) and a coating (1), and the design method comprises the following steps: adopting the existing blade design method to determine an aerodynamic shape parameter and the structural parameters of the blades; adopting the topology optimization method to perform opening design on the web plates and the spar caps of the structure; determining the initial design positions, the number and the sizes of openings through optimization calculation; and checking the strength, the rigidity and the fatigue of the structure of the blades obtained by the topology optimization, and further performing structural adjustment according to the check result so as to ensure that the blades have good structural performances. Through the design method of arranging openings on the web plates and the spar caps, the strength, the rigidity and the anti-fatigue performance of the structure of the blades can be kept, the weight of the blades is simultaneously reduced, not only is the cost of the blades reduced, but also the reducing of the loads of the blades is benefited.

Description

[0001] technical field [0002] The invention relates to the technical field of wind power generation in the mechanical industry, in particular to a structural topology optimization design method for horizontal axis wind turbine blades. [0003] Background technique [0004] As global warming becomes more serious, CO 2 The pressure to reduce emissions is increasing, while the supply of fossil energy is tight, and renewable clean energy is increasingly favored by major countries. Wind energy has the advantages of large reserves, wide distribution, clean and pollution-free, low overall cost and is declining, and is one of the very promising power generation methods. The strategic position of wind energy as an important part of future energy supply has been widely valued by countries all over the world. [0005] In order to realize the large-scale utilization of wind energy and reduce the cost of wind energy utilization, wind turbines are developing in the direction of large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 石可重赵晓路徐建中
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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