Acoustic simulation of wind power yaw friction plate under braking condition
HOU Jian
LI Li-xia
ZHANG Yi
WANG Qi-liang
WANG Jian-mei
Abstract：For megawatt wind turbine yaw brake in low-speed,overloaded conditions appear screaming friction phenomenon,this paper,by using acoustic simulation method,simulates the acoustic radiation characteristics of yaw friction plate under braking conditions,and using orthogonal test method,through the intuitive analysis and variance analysis,studies the influence of yaw pressure,yaw velocity,friction coefficient on the total sound pressure of friction plate.The results show that the total sound pressure at 2 m of the yaw brake system increases with the increase of yaw speed,and the radiating sound pressure in the vertical direction of the yaw brake is larger than that in the horizontal direction.In the frequency domain,the sound pressure near 1 375 Hz is the maximum,and there is continuous high sound pressure from 3 000 to 5 000 Hz.The yaw speed has the greatest influence on the total sound pressure of the yaw braking system,followed by the yaw pressure and the friction coefficient.The total sound pressure of the yaw brake system can be reduced by rationally choosing the yaw operating condition,so as to achieve the purpose of noise reduction,and then provide theoretical guidance and data reference for the design of the yaw brake.
Keywords：low speed heavy loadacoustic simulationorthogonal testacoustic radiationwind power yaw brake
Publication Date：2023-11-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 61-67 )