Wind-induced instabilities and monitoring of wind turbine

查看全文 作　　者：Isaac [1]Wait;Zhaohui (Joey) [2]Yang;Gang [1]Chen;Benjamin [2]Still

机构地区：[1]College of IT & Engineering, Marshall University;[2]Department of Civil Engineering, University of Alaska Anchorage

出　　处：《Earthquake Engineering and Engineering Vibration》索引2019年第18卷第2期,共11页

摘　　要：This paper presents real-time monitoring data and analysis results of the non-stationary vibrations of an operational wind turbine. The advanced time-frequency spectrum analysis reveals varied non-stationary vibrations with timevarying frequencies, which are correlated with certain system natural modes characterized by finite element analysis. Under the effects of strong wind load, the wind turbine system exhibits certain resonances due to blade passing excitations. The system also exhibits certain instabilities due to the coupling of the tower bending modes and blade flapwise mode with blade passing excitations under the variation of wind speed. An analytical model is used to elaborate the non-stationary and instability phenomena observed in experimental results. The properties of the nonlinear instabilities are evaluated by using Lyapunov exponent estimation. 关键词：wind TURBINE condition MONITORING NON-STATIONARY vibrations INSTABILITIES whirl modes WARM PERMAFROST

相关文献

参考文献（67）
引证文献（3）
耦合文献（22）

参考文献(67)

引证文献(3)

耦合文献(22)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Wind-induced instabilities and monitoring of wind turbine

参考文献(67)

引证文献(3)

耦合文献(22)

用户提示