Wind turbine blade with front edge extension power increasing device and design method thereof

A wind turbine blade and design method technology, applied to the direction of wind turbines, wind turbines, computer-aided design, etc., which are consistent with the wind direction, can solve the problems of insignificant power increase effect, increase annual power generation, reduce relative thickness, good effect

Pending Publication Date: 2022-06-24
华能湖北新能源有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wind turbine blade with a leading edge extension power booster and its design method, which solves the problem that the effect of power boosting is not obvious by using aerodynamic accessories to suppress airflow separation

Method used

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  • Wind turbine blade with front edge extension power increasing device and design method thereof
  • Wind turbine blade with front edge extension power increasing device and design method thereof
  • Wind turbine blade with front edge extension power increasing device and design method thereof

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Embodiment Construction

[0046] like figure 1 and figure 2 As shown, the present invention discloses a wind turbine blade with a leading edge extension power augmentation device, comprising an original blade airfoil 2, an extension power augmentation device 1 is added on the leading edge of the original blade airfoil 2, and the extended power augmentation device 1 and The shape of the contact surface 3 of the leading edge of the original blade airfoil 2 is the same as the shape of the leading edge of the original airfoil;

[0047] The extension power-increasing device 1 is turned downward, and the downward turning angle θ=0~15°;

[0048] The distance between the leading edge of the extended power booster 1 and the leading edge of the original blade airfoil 2 is the extension length, denoted as L, L=(10%~30%)*c; c is the chord length of the original blade airfoil 2;

[0049]The extended power booster 1 and the original blade airfoil 2 form a new airfoil shape, the lift coefficient of the new airfoil...

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Abstract

The invention belongs to the field of wind power generation, and relates to a wind turbine blade with a leading edge extension power increasing device, which comprises an original blade airfoil, the extension power increasing device is additionally arranged at the leading edge of the original blade airfoil, and the shape of the contact surface of the extension power increasing device and the leading edge of the original blade airfoil is the same as that of the leading edge of the original airfoil; the extension power increasing device is in a downward turning posture; the extension power increasing device and the original blade airfoil form a new airfoil profile, the lift coefficient of the new airfoil profile is larger than that of the original blade airfoil, and the resistance coefficient of the new airfoil profile is smaller than that of the original blade airfoil. The relative thickness of the airfoil is reduced, so that the aerodynamic performance of the airfoil is improved, the lift coefficient of the airfoil is increased, and the resistance coefficient is reduced; and meanwhile, the chord length of the airfoil is increased, the stress area is increased, and the blade output is improved.

Description

technical field [0001] The invention belongs to the field of wind power generation, and relates to a wind turbine blade with a leading edge extension power increasing device and a design method thereof. Background technique [0002] Wind turbine blades are the main components of wind turbines to capture wind energy, and their aerodynamic performance directly determines the level of wind energy conversion efficiency. When designing a blade, give priority to the design of its aerodynamic shape and aerodynamic performance, such as standard or modified airfoil, chord length, torsion angle, and pre-bending. When the aerodynamic performance reaches the optimal design, start the structural design of the blade, in order to meet the requirements of the unit operation. According to the requirements of blade structure safety, noise control, trailing edge shedding vortex control, etc., through iterative optimization, the structure and shape of the blade are optimized. The end result is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06G06F30/17G06F30/28G06F113/06G06F113/08G06F119/14
CPCF03D1/0633G06F30/17G06F30/28F05B2240/302G06F2113/06G06F2113/08G06F2119/14Y02E10/72
Inventor 虞小兵张林伟蔡安民陈浩彭阁李林川林伟荣李力森李媛金强
Owner 华能湖北新能源有限责任公司
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