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Wind turbine comprising elastically flexible rotor blades

A technology of wind power generators and rotor blades, applied in wind power generators, wind power generators consistent with the wind direction, wind power generation, etc., can solve the problems of easy failure, expensive, unsuitable for wider application, etc., and reduce production cost effect

Inactive Publication Date: 2007-07-11
爱罗丁能量体系有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A common feature of all these solutions is that they are expensive and prone to failure, so they are not suitable for wider applications

Method used

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  • Wind turbine comprising elastically flexible rotor blades
  • Wind turbine comprising elastically flexible rotor blades
  • Wind turbine comprising elastically flexible rotor blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] FIG. 1 shows a wind turbine with a tower 10 and tower anchors 12 . The nacelle 14 is arranged to be rotatable about the axis of the tower 10 . In the nacelle 14 is mounted a rotor 16 which turns on the leeward side, ie the side of the tower 10 facing away from the wind. When the rotor is at rest under conditions of limited wind and the generator is still running, the blades are not deflected or only slightly deflected. The blades are mounted to the hub at a cone angle—that is, set to be inclined in the direction of the wind—so that when the generator is operating, centrifugal forces and wind shear forces result in substantially no bending moments at the blade roots. For wind speeds greater than the cut-out speed, the generator slows down and stops.

[0019] Figure 2 shows the generator in a deceleration state at extremely high wind speeds. The blade deflects two-thirds of its full length due to wind shear. Due to this significant deflection, the wind load is signifi...

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PUM

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Abstract

The invention relates to a wind turbine comprising a tower (10), a nacelle (14) that is mounted on the tower (10) and can be rotated about the axis of the latter and a rotor (16), which is carried by the nacelle (14) on the lee side and comprises at least one rotor blade (18). The flexural strength of the rotor blade or blades (18) permits the elastic flexure of said blade by more than half of its extension.

Description

technical field [0001] The invention relates to a wind power generator, which has a tower, a nacelle and a rotor, the nacelle is mounted on the tower and can rotate around its axis, the rotor has at least one rotor blade, the rotor blade is The swivel is mounted on the nacelle and rotates on the leeward side relative to the tower. Background technique [0002] Wind power technology has developed very rapidly in recent decades, but only with very large average-sized power plants for grid-connected operation. However, the development of small power generation systems in the kilowatt range has not progressed in the last two decades. Therefore, generators are still very expensive and therefore do not enter the market. Wind power could play an important role in supplying the two billion people without electricity. For this situation, generators in the 1-10 kW power class are highly desirable, but these generators must be very robust, inexpensive, easy to build and virtually ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06
CPCF05B2240/2022F03D1/0608F05C2253/04F05B2280/5001F05B2240/311Y02E10/726F05B2280/6003F05B2240/2213Y02E10/721F05C2251/02Y02E10/72
Inventor S·西格弗里德森
Owner 爱罗丁能量体系有限公司