摘要
近年来,风力发电在国内得到了快速发展,但大型风力机产生的噪声也引起了广泛关注。该文通过远场传声器测量法开展了大型风力机噪声实验,研究了风力机的主要噪声源位置及产生机制。结果表明,在风力机的来流风的下游方向、风力机风轮叶片平面方向的噪声较大,存在声压级峰值的纯音基频和倍频,表明风力机的主要噪声源是叶片尖端气动噪声和风轮后面的机械噪声。最后指出了对这些主要噪声源进行有效控制的一些措施。
The wind power generation by wind turbines has been developed rapidly in recent years.However,the noise generated by wind turbines is also widely attracted the focuses of the people.The large wind turbine acoustic tests were conducted by acoustical transducers measurement in far field,and the main noise sources area and their generation mechanism were investigated.The results show that there existed high noise level in downstream and blade plain directions of wind turbine,and also the tone frequency and integer multiples of this frequency were found,which indicated that the aero-acoustic noise in trailing end of blades and mechanical noise after the wind wheel were the main noise sources.Some effective methods to control those noise sources were presented finally.
作者
王国章
李小龙
张俊霞
黄文军
WANG Guozhang LI Xiaolong ZHANG Junxia HUANG Wenjun(College of Energy Engineering, Yulin College, Yulin 719000,China)
出处
《压电与声光》
CAS
CSCD
北大核心
2016年第5期829-832,共4页
Piezoelectrics & Acoustooptics
基金
国家自然科学基金资助项目(51406176)
榆林市科技计划基金资助项目(2014cxy-05)
关键词
风力机
风力发电
噪声源
叶片
气动噪声
机械噪声
wind turbine
wind power generation
noise sources
blade
aero-acoustic noise
mechanical noise
