Effect of Wind Shear on Rotational Fourier Spectrum of Wind Turbine

摘要：

　　In order to accurately obtain the influence of rotational effect on fluctuating component of turbulent wind acted on wind turbine,considering source spectrum and rotational sample points were changed since wind shear changed mean wind speed in the rotor plane along the vertical direction,rotational Fourier spectrum with wind shear was deduced.Based on the investigation on a 3MWthree-bladed pitch regulated wind turbine,rotational Fourier spectrums with and without wind shear were compared,the effect of radius on rotational Fourier spectrum was analyzed,cross power spectral densities of rotational Fourier spectrum with different blades and variable radius were compared.The results show that the effect of wind shear on amplitude of rotational Fourier spectrum is unconspicuous while the phase frequency characteristic is alternative for the sample points are changed.Rotational Fourier spectrum energy removes to the high frequency bands,the amplitudes of peak at the integer multiple rotational frequencies increase with radius increases.The initial phase has little influence to the amplitude of spectrum,and cross power spectral densities of different radius are obviously less than auto power spectral densities of the same radius.

关键词： wind turbine wind shear rotational Fourier spectrum Kaimal spectrum

作者: Wei He De Tian Weilong Wang

作者单位: State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources(North China Electric Power University), Beijing, China 102206

会议类型: 国际会议

会议名称: 3rd International Conference on Frontiers of Manufacturing and Design Science(第三届制造与设计科学前沿国际会议(ICFMD))

会议地点: 香港

会议语种:英文

页码: 872-876

在线出版日期: 2012-12-11（万方平台首次上网日期，不代表论文的发表时间）