CAJ | 학술논문

研究了风力发电机气动调幅噪声的测量技术、数值计算方法及其内在关联，提出了一种气动噪声测量、分析和预测方法。将测量噪声信号高通滤波后求解瞬时dBC值，并进行傅里叶变换求取调幅噪声幅值和叶片通过频率。将实测数据与模拟数据对比分析，发现数据有很好的关联。通过研究进一步加深了对气动噪声产生机理的认识，同时为将来气动噪声测量分析标准的建立提供依据。
연구료풍력발전궤기동조폭조성적측량기술、수치계산방법급기내재관련，제출료일충기동조성측량、분석화예측방법。장측량조성신호고통려파후구해순시dBC치，병진행부리협변환구취조폭조성폭치화협편통과빈솔。장실측수거여모의수거대비분석，발현수거유흔호적관련。통과연구진일보가심료대기동조성산생궤리적인식，동시위장래기동조성측량분석표준적건립제공의거。
Both measurement methods and numerical computation methods as well as their correlation for the wind turbine’ s amplitude modulation noise were discussed;and the method of measuring, analyzing and pre-dicting the aerodynamic noise was proposed, which has the measured noise signal filtered to get instant dBC value and the Fourier transform based to obtain the value of amplitude modulation noise and the blade passing frequency .Having measured data compared with the simulated data shows that these data have some good cor-relation.This leads to further understanding of the noise mechanism and provides the basis for later establish-ment of the measurement standards for aerodynamic noise.