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Wind turbine blade with controlled active flow and vortex element

A technology of wind turbines and turbine blades, applied in the field of wind turbines, can solve the problems of increasing the cost or complexity of blades

Inactive Publication Date: 2012-01-11
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the swirl generators and flow circulation systems discussed in the cited references provide unique aerodynamic properties, the industry would benefit from turbine blades that effectively utilize the combination of both concepts in a single component, while Does not detrimentally increase the cost or complexity of the blade

Method used

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  • Wind turbine blade with controlled active flow and vortex element
  • Wind turbine blade with controlled active flow and vortex element
  • Wind turbine blade with controlled active flow and vortex element

Examples

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Embodiment Construction

[0033] Reference will now be made in detail to embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield a still further embodiment. Accordingly, it is intended that the present invention includes such modifications and variations as come within the scope of the appended claims and their equivalents.

[0034] figure 1 A wind turbine 10 of conventional construction is shown. Wind turbine 10 includes a tower 12 and a nacelle 14 mounted thereon. A plurality of turbine blades 16 are mounted on a rotor hub 18 which in turn is c...

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PUM

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Abstract

The invention relates to a wind turbine blade with controlled active flow and vortex element. The wind turbine blade (16) includes a suction side surface (30) and a pressure side surface (32). A plurality of vortex elements (40) are formed on at least one of the suction side or pressure side surfaces. An active flow control system (38) is operably configured with the vortex elements so as to direct pressurized air through the vortex elements and along the blade surface. The aerodynamic performance of the blade is modified by a combined effect of the vortex elements and the active flow control system.

Description

technical field [0001] The present invention relates generally to the field of wind turbines, and more particularly to turbine blades with aerodynamic surface configurations. Background technique [0002] Turbine blades are the main elements of wind turbines used to convert wind energy into electrical energy. The blades have an airfoil cross-sectional profile such that during operation, air flows over the blades creating a pressure differential between the two sides. Thus, a lifting force directed from the pressure side towards the suction side acts on the blade. The lifting force generates torque on the main rotor shaft, which is geared to a generator for generating electricity. [0003] The air flow over the leading edge of the blade is predominantly laminar in the "attached flow" region. Lifting forces are mainly generated in this attached flow region. As the air moves towards the trailing edge of the blade, flow separation occurs and the air flow transitions into a "...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D7/02F03D11/02
CPCF03D1/06Y02E10/721F03D1/0675F03D7/022F05B2240/3052F05B2240/3062Y02E10/72F05B2240/122F05B2240/30
Inventor P·L·B·圣地亚哥E·Y·塞戈维亚T·G·斯皮克贝尔
Owner GENERAL ELECTRIC CO