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Pitch regulation device of a wind turbine blade

A technology of wind turbines and blades, which is applied in the control of wind turbines, wind turbines, engines, etc., and can solve problems such as the need for batteries

Active Publication Date: 2014-04-16
ROTAK EOLICA SL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of these types is an electromechanical system, where the blades are driven by a variable speed electric motor with the aid of a planetary gear reducer, which has the advantage of being driven by electricity without the need for hydraulic units or internal transmissions, but has the disadvantage of requiring batteries or additional hydraulics in emergency situations , and there is a problem: the gear reducer acts as a brake if it is to be moved by another system
The second of these types is a hydraulic system that includes a hydraulic accumulator, which prevents emergencies in the event of a lack of power, but has the disadvantage of utilizing a hydraulic circuit consisting of a servo actuator that drives the blades by means of a swivel joint Actuators, rotary joints convert linear motion into rotary motion, producing undesired torque

Method used

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  • Pitch regulation device of a wind turbine blade
  • Pitch regulation device of a wind turbine blade
  • Pitch regulation device of a wind turbine blade

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Embodiment Construction

[0019] Such as figure 1 As shown, the device of the invention enables the rotation of the blades 1 of a wind turbine 2 to be controlled so that the angle of attack of said blades 1 relative to the wind can be corrected, which enables the power, blade speed and performance of the generator to be adjusted; Or when there is excessive wind or in an emergency, the blade can be stopped, so that the blade 1 is positioned in a feathered position or a flag position parallel to the wind direction.

[0020] The rotation device of the blade 1 of the wind turbine 2 comprises a hydraulic actuator 3 linked to said blade 1 and enabling rotation of the blade about its longitudinal axis of rotation; System 4. Said actuator 3 comprises a substantially toroidal hydraulic chamber 5 concentric to the axis of rotation of the blade 1 , linked to the hydraulic system 4 , said hydraulic chamber 5 comprising: at least one piston 6 , driven by a predetermined arc Moveable inside the hydraulic chamber 5...

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PUM

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Abstract

Rotation device of a wind turbine blade (1), which comprises a hydraulic actuator (3) to rotate said blade (1) in relation to a longitudinal axis of rotation, and a hydraulic system (4) to drive the actuator (3), wherein said actuator (3) comprises a substantially toroidal hydraulic chamber (5) concentric with the axis of rotation of the blade (1), said hydraulic chamber (5) comprising at least one moving piston (6) linked to the blade (1), and at least one respective fixed stopper (7).

Description

technical field [0001] The invention relates to a device designed for the rotation of a wind turbine blade on its longitudinal axis. Background technique [0002] It is known to generate electricity from wind energy using wind turbines. To this end, wind turbines are arranged with blades, the rotation of which causes the rotor to be driven, thus gaining electrical energy. Orienting the wind turbine blades facing the wind enables the rotor speed and output power to be adjusted by means of a system that adjusts the angle of attack of each blade relative to the wind. [0003] There are mainly two known types of systems for adjusting the angle of attack of the blades. One of these types is an electromechanical system, where the blades are driven by a variable speed electric motor with the aid of a planetary gear reducer, which has the advantage of being driven by electricity without the need for hydraulic units or internal transmissions, but has the disadvantage of requiring b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02
CPCY02E10/723F05B2270/604F03D7/0224Y02E10/72
Inventor J·戈罗斯特吉·伊昔扎J·戈罗斯特吉·加门迪亚
Owner ROTAK EOLICA SL