Method and device for determining aeroelastic stability of wind turbine blades

A wind turbine, aeroelastic stability technology, applied in electrical digital data processing, instrumentation, design optimization/simulation, etc., can solve problems such as prediction and evaluation of aeroelastic stability of blades with large deformation, blade flexibility increase, etc. , to achieve the effect of accurately predicting the aeroelastic stability of the blade

Active Publication Date: 2018-10-30
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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Problems solved by technology

[0004] However, due to the increasing diameter of wind turbine impellers, the flexibility of the blades has greatly increased, and the deformation range of the blades is as long as several meters. Prediction and Evaluation of Aeroelastic Stability of Blades with Large Deformation

Method used

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  • Method and device for determining aeroelastic stability of wind turbine blades
  • Method and device for determining aeroelastic stability of wind turbine blades
  • Method and device for determining aeroelastic stability of wind turbine blades

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Embodiment Construction

[0056] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0057] In this embodiment, the aeroelastic damping ratio of the blades in the multi-body dynamics model of the wind turbine is determined by the coupling analysis method of multibody dynamics and fluid dynamics, and the blades of the wind turbine are determined according to the aeroelastic damping ratio. Aeroelastic stability, the following s...

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Abstract

The invention discloses a method for determining aeroelastic stability of blades of a wind generating set. The method comprises the following steps: carrying out multi-body dynamics analysis on the blades, and determining various vibration modes of the blades when the blades are in a balanced state under the working condition of determined wind speed; carrying out fluid dynamics analysis on the blades, and determining aeroelastic damping ratio of the blades under different vibration modes; and determining the aeroelastic stability of the blades under the corresponding vibration modes accordingto the aeroelastic damping ratio. The invention further discloses a device for determining the aeroelastic stability of the blades of the wind generating set. The aeroelastic stability of the bladescan be assessed accurately.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a method and a device for determining the aeroelastic stability of blades of a wind power generating set. Background technique [0002] The wind turbine impeller is the energy input source of the whole machine, and the aeroelastic stability of the impeller plays a vital role in evaluating the low-frequency coupling vibration of the whole machine. , the lightweight of the blade and the increase of the flexibility of the blade, the aeroelastic stability problem is becoming more and more important and prominent, so it is urgent to find an impeller aeroelastic simulation analysis method that is close to the actual operation law of the wind turbine impeller, and evaluate it from the perspective of the wind turbine impeller subsystem The aeroelastic stability of the impeller ensures the reliability design of the unit. [0003] In the prior art, there are methods of predicting the f...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 高杨张志弘李双虎徐志良
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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