TIME-FREQUENCY ANALYSIS METHOD BASED ON IMPROVED PRONY TRANSFORM AND ITS APPLICATION IN OFFSHORE WIND TURBINES

Xiong Gen; Wang Bin; Lu Nanxin; Xia Lu; Zhu Zhoujie

doi:10.19912/j.0254-0096.tynxb.2021-0084

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (9) : 280-286. DOI: 10.19912/j.0254-0096.tynxb.2021-0084

TIME-FREQUENCY ANALYSIS METHOD BASED ON IMPROVED PRONY TRANSFORM AND ITS APPLICATION IN OFFSHORE WIND TURBINES

Xiong Gen^1,2, Wang Bin^1,2, Lu Nanxin², Xia Lu², Zhu Zhoujie²

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Abstract

In view of the shortcomings of the existing time-frequency analysis methods such as wavelet transform and Hilbert-Huang transform in the analysis of measured signals of offshore wind turbines, this paper developed a short-time time-frequency analysis method based on the improved Prony method, and the correctness of the proposed method is verified by the measured data of the foundation of an offshore wind turbine and the offshore wind turbine structure. The practicability and feasibility of the proposed time-frequency analysis method are demonstrated by comparing with several existing time-frequency analysis methods.

Key words

offshore wind power / condition monitoring / measured data / time-frequency analysis / Hilbert-Huang transform

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Xiong Gen, Wang Bin, Lu Nanxin, Xia Lu, Zhu Zhoujie. TIME-FREQUENCY ANALYSIS METHOD BASED ON IMPROVED PRONY TRANSFORM AND ITS APPLICATION IN OFFSHORE WIND TURBINES[J]. Acta Energiae Solaris Sinica. 2022, 43(9): 280-286 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0084

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