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Rotor blade assembly having an auxiliary blade

A technology of auxiliary blades and rotor blades, applied in the field of rotor blades, can solve the problems of reduced aerodynamic efficiency, increased drag force, and turbulence of rotor blades.

Inactive Publication Date: 2012-07-11
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the air flows downstream towards the trailing edge of the blade, the airflow separates or separates from the surface of the rotor blade, becoming more turbulent
This airflow separation typically results in less lift being produced by the blades, while also increasing drag
As a result, the overall aerodynamic efficiency of the rotor blades is reduced

Method used

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  • Rotor blade assembly having an auxiliary blade
  • Rotor blade assembly having an auxiliary blade
  • Rotor blade assembly having an auxiliary blade

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Embodiment Construction

[0021] Reference will now be made in detail to various embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, those skilled in the art can easily make various modifications and changes to the present invention without departing from the scope or spirit of the invention. For example, features that are part of one embodiment can be used on other embodiments to yield a still further embodiment. Accordingly, the present invention should cover all modifications and changes within the scope of the appended claims and their equivalents.

[0022] Please refer to the attached picture now, figure 1 Shown is a perspective view of a wind turbine 10 of conventional construction. The wind turbine 10 includes a tower 12 on which a nacelle 14 is mounted. A plurality of rotor blades 16 are mounted on a rotor hub 18 which in turn is connected to a ...

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Abstract

A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly may generally include a primary rotor blade and an auxiliary rotor blade disposed on a suction side of the primary rotor blade. The auxiliary blade may generally include an upstream edge and a downstream edge, with the upstream edge being positioned downstream of a leading edge of the primary rotor blade.

Description

technical field [0001] The present invention relates generally to rotor blades for wind turbines, and more particularly to rotor blade assemblies having one or more auxiliary blades configured to prevent or delay Airflow separation. Background technique [0002] Wind energy is considered to be one of the cleanest and most environmentally friendly energy sources available, and wind turbines have gained a lot of attention in this regard. A modern wind turbine typically consists of a tower, generator, gearbox, nacelle and one or more rotor blades. Rotor blades are the main elements used to convert wind energy into electrical energy. The blades typically have the cross-sectional profile of an airfoil, so that during operation, air flowing over the blade creates a pressure differential between the two sides. Therefore, a lift force acts on the blade from the pressure side to the suction side. The lift produces torque on the main rotor shaft, which is geared to a generator tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06
CPCY02E10/223F03D1/0633Y02E10/721Y02E10/72
Inventor O·默罕默德J·G·吕德克S·赫尔
Owner GENERAL ELECTRIC CO
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