VIBRATION FREQUENCY TRACKING OF WIND TURBINE TOWER USING PARALLEL ADAPTIVE NOTCH FILTER

Yang Wei; Chai Yi; Zheng Jie; Liu jie

doi:10.19912/j.0254-0096.tynxb.2020-1341

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (8) : 309-315. DOI: 10.19912/j.0254-0096.tynxb.2020-1341

VIBRATION FREQUENCY TRACKING OF WIND TURBINE TOWER USING PARALLEL ADAPTIVE NOTCH FILTER

Yang Wei^1,2, Chai Yi^1,3, Zheng Jie², Liu jie²

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Abstract

According to the characteristics of multi frequency and time-varying coupling of tower vibration of large-scale wind turbine, a parallel adaptive notch filter based on knowledge driven is proposed to track the multi frequency of tower vibration online and eliminate the influence of vibration components of each frequency. Firstly, the resonance frequency points are analyzed off-line by using the knowledge of Campbell diagram to determine the structure and search range of the notch filter. In the interval, the golden section method is used to track the center frequency online from low frequency to high frequency, which can avoid frequency overlap and reduce the amount of calculation. In order to improve the reliability of vibration fundamental frequency identification, the fundamental frequency is determined by fusion. Finally, the tower vibration of NERL 5 MW wind turbine is simulated based on FAST and MATLAB to verify the effectiveness of the method.

Key words

adaptive notch filter / vibration control / wind turbines / frequency tracking / tower

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Yang Wei, Chai Yi, Zheng Jie, Liu jie. VIBRATION FREQUENCY TRACKING OF WIND TURBINE TOWER USING PARALLEL ADAPTIVE NOTCH FILTER[J]. Acta Energiae Solaris Sinica. 2022, 43(8): 309-315 https://doi.org/10.19912/j.0254-0096.tynxb.2020-1341

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