重型机械Issue(6)：61-67,7.
制动工况下风电偏航摩擦片声学特性研究
Acoustic simulation of wind power yaw friction plate under braking condition
摘要
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.关键词
低速重载/声学仿真/正交试验/声学辐射/风电偏航制动器Key words
low speed heavy load/acoustic simulation/orthogonal test/acoustic radiation/wind power yaw brake分类
信息技术与安全科学引用本文复制引用
候建,李丽霞,张毅,王其良,王建梅..制动工况下风电偏航摩擦片声学特性研究[J].重型机械,2023,(6):61-67,7.基金项目
山西省科技重大专项(202201060301015) （202201060301015）
太原科技大学研究生联合培养示范基地项目(JD2022021) （JD2022021）
