Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for reducing noises by adjusting yaw braking forces of wind turbine

A yaw braking and force adjustment technology, applied in the control of wind turbines, wind turbines, machines/engines, etc., can solve the problems of large pressure loss along the way, unable to guarantee the braking force phase of the brake chuck, etc., to reduce noise , reduce wear and damage to the transmission mechanism, and improve the efficiency of utilization

Inactive Publication Date: 2012-06-06
ZHEJIANG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using the above connection method, due to the pressure loss along the hydraulic pipeline, the longer the pipeline, the greater the pressure loss along the journey, so the braking force of each brake chuck cannot be guaranteed to be equal.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reducing noises by adjusting yaw braking forces of wind turbine
  • Method for reducing noises by adjusting yaw braking forces of wind turbine
  • Method for reducing noises by adjusting yaw braking forces of wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Refer to attached figure 1 to attach image 3 As shown, a wind turbine yaw braking force adjustment noise reduction method, the oil outlet of the oil supply system is respectively connected with the rodless cavity of the oil cylinder 2 in the six brake chucks 1, and the oil outlet of the oil supply system An electro-hydraulic proportional throttle valve 3 is connected in series on the hydraulic pipeline connected between the port and each brake chuck 1 oil cylinder, and a sound intensity sensor 4 is installed on each brake chuck 1 at the same time.

[0022] During the yaw braking process of the wind turbine, the controller monitors the sound intensity sensor 4 on one of the hydraulic chucks 1, and obtains the noise signal output by the sound intensity sensor 4. According to the obtained monitoring information, the controller sends a signal to the hydraulic chuck The electro-hydraulic proportional throttle valve 3 on the disc 1 sends a control signal to control and adju...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for reducing noises by adjusting the yaw braking forces of a wind turbine. The method comprises the following steps: an oil outlet of an oil supply system is respectively connected with an oil cylinder of each brake chuck (1), then an electro-hydraulic proportional throttling valve (3) is connected in series on a pipeline connected between the oil outlet and the oil cylinder of each brake chuck, and each brake chuck is provided with a sound-intensity sensor (4); a controller monitors one of the sound-intensity sensors (4), and adjusts the input value of a corresponding electro-hydraulic proportional throttling valve (3) to the optimal value; when the controller adjusts one of the electro-hydraulic proportional throttling valves (3), the other electro-hydraulic proportional throttling valves (3) are fixed, and then adjusted sequentially according to the method above; and after the adjustment is completed, the electro-hydraulic proportional throttling valves (3) are replaced with throttling valves, and then each sound-intensity sensor (4) is dismantled. By using the method, each brake chuck (1) can have consistent braking force in the process of braking, and the noises produced in the process of yaw can be reduced.

Description

technical field [0001] The invention belongs to the field of wind power generation, and in particular relates to a noise reduction method for adjusting the yaw braking force of a wind turbine. Background technique [0002] As the problem of energy shortage becomes more and more serious, people pay more attention to the development and utilization of renewable energy. As a renewable clean energy, the development and utilization of wind energy has made great progress and development. In the wind turbine, the yaw system enables the wind turbine to follow the changing wind direction, and always keep the wind direction perpendicular to the surface of the blade wheel, so as to obtain a high utilization rate of wind energy. [0003] The yaw brake of the wind turbine is divided into two stages: in the first stage, when the wind turbine impeller faces the wind, the yaw brake applies a small braking force, which mainly acts as yaw resistance; in the second stage, the impeller After t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00F15B21/08F16D65/18F16D121/02
CPCY02E10/723Y02E10/72
Inventor 林勇刚李飞龙刘宏伟李伟
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com