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Blade as well as wind-driven power generating set and method

A technology for wind turbines and blades, which is applied in wind turbines, control of wind turbines, and wind power generation. It can solve problems such as large bending moment of impellers on towers or main shafts, high pitch frequency, and resonance, and achieve balance quality. , reduce pitch frequency and prolong life

Active Publication Date: 2017-05-31
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a blade, a wind power generating set and a method, which can solve the problems of too high pitch frequency during the speed regulation process of the blades of the wind power generating set, excessive bending moment of the impeller on the tower or the main shaft, unbalanced overall mass of the impeller, and resonance problem

Method used

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  • Blade as well as wind-driven power generating set and method
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  • Blade as well as wind-driven power generating set and method

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Embodiment Construction

[0034] 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 creative efforts fall within the protection scope of the present invention.

[0035] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0036] From the perspective of energy conservation, in ...

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Abstract

The invention discloses a blade as well as wind-driven power generating set and method. Pitch regulating frequency in the speed regulating process of the wind-driven power generating set can be reduced. The blade of the wind-driven power generating set comprises a hollow cavity, a mass assembly, a driving assembly and a sensor, wherein the mass assembly, the driving assembly and the sensor are arranged in the hollow cavity; the driving assembly is used for driving the mass assembly to move in the length direction of the blade; and the sensor detects the movement quantity of at least part of elements in the driving assembly or the displacement quantity of the mass assembly. According to the blade provided by the invention, the rotating inertia of an impeller can be changed through the movement of the mass assembly in the blade, so that the speed of the impeller is regulated.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a blade, a wind power generator set and a method. Background technique [0002] During the operation of the wind turbine, in order to obtain the best wind energy conversion efficiency, the impeller blades should have different pitch angles under different wind speeds. By adjusting the different pitch angles, the speed of the impeller can be adjusted to achieve the optimal power generation mode. [0003] The pitch system of the wind turbine can adjust the pitch angle of the blades. When the pitch angle changes, the driving force of the airflow acting on the blades changes. When the driving force changes, the torque on the impeller also changes accordingly, so as to realize the adjustment of the impeller speed. . For example, when the wind speed is lower than the target wind speed, the pitch system can be activated to adjust the pitch angle of the blades,...

Claims

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Application Information

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IPC IPC(8): F03D80/00F03D7/02
CPCF03D7/02F03D7/0296Y02E10/72
Inventor 苏小虎樊祥希其他发明人请求不公开姓名
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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