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Hydraulic system and method for operating a brake of a wind turbine

A technology of hydraulic system and brake, applied in the field of hydraulic system, can solve problems such as reliability problems

Active Publication Date: 2010-12-22
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This setup has the potential to create reliability issues

Method used

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  • Hydraulic system and method for operating a brake of a wind turbine
  • Hydraulic system and method for operating a brake of a wind turbine
  • Hydraulic system and method for operating a brake of a wind turbine

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Embodiment Construction

[0017] figure 1 One embodiment of a wind turbine 10 is shown. A wind turbine generally includes a frame 12 , a nacelle 14 supported by the frame 12 , and a rotor 16 connected to the nacelle 14 . Rotor 16 includes a hub 18 rotatably mounted to nacelle 14 and a set of blades 20 connected to hub 18 . Conventionally, the blades 20 convert the kinetic energy of the wind into mechanical energy for turning the shaft of the generator 22 .

[0018] The wind turbine 10 further includes a brake 30 and a hydraulic station 32 housing hydraulic system components for controlling the brake 30 . Such as figure 2 As shown, the brake 30 generally includes a disc 34 configured to couple with a shaft and one or more calipers 36 configured to apply a frictional force to the disc 34 . The shaft may be a low speed shaft connected to rotor 16 , a high speed shaft connected to generator 22 , or other shaft in the drive train of wind turbine 10 that transmits mechanical energy generated by rotor 16...

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PUM

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Abstract

A hydraulic system and method for controlling the brake of a wind turbine are provided. During operation of the wind turbine, pressurized working fluid in the hydraulic system is blocked from being supplied to the brake. Even if some of this fluid does reach the brake, it is drained to prevent a pressure build-up and activation. To activate the brake, this drainage is stopped and the pressurized fluid is supplied to the brake. The blocking and unblocking the pressurized working fluid may be controlled by first and second activation valves arranged in parallel in a supply line that communicates the working fluid to the brake.

Description

technical field [0001] The invention relates to a hydraulic system for a wind turbine. More specifically, the present invention relates to a hydraulic system for operating the brakes of a wind turbine and a method of controlling the brakes of a wind turbine by means of such a hydraulic system. Background technique [0002] A wind turbine (also known as a "wind turbine generator" or WTG) is usually equipped with a mechanical brake on its drive train to stop the rotor of the wind turbine and keep the turbine in this stall (ie stopped) state. This may be necessary during service and maintenance operations, for example. Although many wind turbines include pitch mechanisms that can be controlled to stop their rotors (also known as idle), mechanical brakes are still required for safety reasons such as emergency shutdowns. [0003] The two types of mechanical brakes that are commonly used are disc brakes and clutch brakes. Disc brakes include a disc connected to a shaft in a dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02
CPCF16D55/228Y02E10/723F03D7/0248Y02E10/722F16D2121/02F03D11/00F05B2260/406F03D80/00F03D17/00F03D9/28Y02E10/72Y02E60/16
Inventor C·勒厄德O·M·耶珀森K·L·延森C·阿勒
Owner VESTAS WIND SYST AS