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The aeroelastic coupling analysis of flexible blades for a horizontalaxis wind turbine

Journal Article


Abstract


  • The aeroelastic coupling analysis of flexible blade of horizontal axis wind turbine and numerical integration method were studied. Firstly, a so-called superelement was used to discretize the flexible blade into a number of superelements consisting of a series of rigid bodies connected by springs and dampers to describe the blade flapwise, edgewise and torsional deforinations. The dynamical equations of multibody system of controlled rotating blade were obtained via the R-W method based on the theory of computational dynamics of multibody system and the aerodynamic forces acting upon each rigid body of the blade under deformation state were calculated by the blade element theory. The coupling between the blade deformations and the arodynamic forces was realized during real-time numerical integration. The aeroelastic coupling of a 1.5 MW wind turbine blade operating at certain wind speed and protating speed was analyzed. The analysis results indicated that the superelement modeling method can describe the coupling among blade elastic deformation, aerodynamic loads and blade displacement well, and this method is a useful analysis method for the aeroelastic coupling and stability analysis of wind turbine systems.

Publication Date


  • 2015

Citation


  • Li, D., Mo, W., Xia, H., Lü, W., & Liu, X. (2015). The aeroelastic coupling analysis of flexible blades for a horizontalaxis wind turbine. Taiyangneng Xuebao/Acta Energiae Solaris Sinica, 36(3), 734-742.

Scopus Eid


  • 2-s2.0-84937440307

Web Of Science Accession Number


Start Page


  • 734

End Page


  • 742

Volume


  • 36

Issue


  • 3

Abstract


  • The aeroelastic coupling analysis of flexible blade of horizontal axis wind turbine and numerical integration method were studied. Firstly, a so-called superelement was used to discretize the flexible blade into a number of superelements consisting of a series of rigid bodies connected by springs and dampers to describe the blade flapwise, edgewise and torsional deforinations. The dynamical equations of multibody system of controlled rotating blade were obtained via the R-W method based on the theory of computational dynamics of multibody system and the aerodynamic forces acting upon each rigid body of the blade under deformation state were calculated by the blade element theory. The coupling between the blade deformations and the arodynamic forces was realized during real-time numerical integration. The aeroelastic coupling of a 1.5 MW wind turbine blade operating at certain wind speed and protating speed was analyzed. The analysis results indicated that the superelement modeling method can describe the coupling among blade elastic deformation, aerodynamic loads and blade displacement well, and this method is a useful analysis method for the aeroelastic coupling and stability analysis of wind turbine systems.

Publication Date


  • 2015

Citation


  • Li, D., Mo, W., Xia, H., Lü, W., & Liu, X. (2015). The aeroelastic coupling analysis of flexible blades for a horizontalaxis wind turbine. Taiyangneng Xuebao/Acta Energiae Solaris Sinica, 36(3), 734-742.

Scopus Eid


  • 2-s2.0-84937440307

Web Of Science Accession Number


Start Page


  • 734

End Page


  • 742

Volume


  • 36

Issue


  • 3