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Rotors for wind turbines

A wind turbine and rotor technology, which is applied in the control of wind turbines, wind turbines, and wind turbines in the same direction as the wind, to achieve the effect of small limit load and low cost

Inactive Publication Date: 2015-11-25
SUZLON ENERGY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the challenges is to obtain sufficient clearance between the tips of the rotating blades and the tower under the different operating conditions of the wind turbine

Method used

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  • Rotors for wind turbines
  • Rotors for wind turbines
  • Rotors for wind turbines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0076] exist figure 1 Part of the top of the wind turbine 1 can be seen in . The wind turbine 1 comprises a tower 2 , a nacelle 3 and a rotor 4 comprising a hub 5 and three blades 6 . During the rotation of the blade 6 the blade 6 sweeps the area 7 . The ratio between this area 7 and the area of ​​the three blades 6 facing the wind expresses the solidity of the rotor. To be able to use the solidity ratio as a function of radius, use the new ratio Sol r . The ratio Sol r Called the combined radius specific solidity, it is the ratio between the added length of the chord 8 on all blades and the circumference of the circle 15 described by the largest radius on the rotor 4 .

[0077] Combined Specific Solidity Sol r Definition:

[0078] where n is the number of blades on the rotor, chord is the length of the chord of the blades at a particular radius, and R is the maximum diameter of the rotor.

[0079] exist figure 2 , it can be seen that the specific solidity of the c...

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PUM

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Abstract

A rotor for a wind turbine, having a diameter of 50 metres or more, has a blade with at least two blade sections in the lengthwise direction of the blade, where at least one blade section has a curvature along the blade and relative to a second blade section, where said curvature results in the tip end of said blade being offset (x) relative to the axis of the blade root. A ratio (x / L) of the offset (x) relative to a distance (L) from the tip end of the blade to the blade root is between 0 and 0.1.

Description

technical field [0001] The invention relates to a rotor for a wind turbine comprising at least a tower, a nacelle on top of the tower and a rotor having a diameter of 50 meters or more connected to a substantially horizontal a main shaft, said main shaft being rotatably mounted in said nacelle, said wind turbine being of the type facing upwind with a rotor comprising at least one blade (but preferably 3 blades) and a hub, said blade having a thin is elongate in shape and has a root end and a tip end, wherein the blade is connected to the hub at the root end, and the joint between the hub and the blade includes a tilting mechanism, and the rotor has a rotor plane delineated by the swept area of ​​the blades, said rotor plane having a conical shape, i.e. the rotor plane is angled towards the upwind direction, wherein said conical shape originates at least in part from the shape of said hub, and said rotor plane A blade with a combined radius specific solidity (combined radius s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D1/06F03D7/04
CPCF01D5/02F03D1/0608F05B2250/70F05B2250/71Y02E10/721Y02E10/72
Inventor T·毕尔特鲁普尼尔森E·斯洛斯A·G·冈萨雷斯R·詹森M·雷克
Owner SUZLON ENERGY LTD