Modified rigid finite element method for wind turbine dynamics
Fenghao ZHANG,Rong HE()
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
The two-stage-division method used by the rigid finite element method has some defects that restrict analyses for wind turbine dynamics. A modified method is developed which replaces the two-stage-division method by distributing the spring damping elements as in the real structure. The action range of the spring damping element is also adjusted. The displacement and frequency results computed by the modified method are very close to precise results. The modified method is flexible with easily applied boundary conditions, so this method can be widely used. A wind turbine dynamic model developed using the modified method gives accurate results.
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