| With the development of large-scaled wind turbine, the reliability problem is paidmore and more attention. In this paper, fully coupled and integration of design scheme isproposed. To improve the reliability of wind turbine, multi-body dynamics model was built.Dynamics model of3MW wind turbine key components and the wind turbine, aiming atthe high fidelity model load cases is focused.Firstly, according to the related parameter of3MW wind turbine, the wind turbinemodel was built by different ways. And super element model is established based on themodel. Model freedom is greatly reduced with using super-element method. In the paper,the comparison between the super-element modal and finite-element modal of bedplate,hub and main shaft is conducted. The results show that the first10natural frequencies ofless than3%, while the computation time is decreased. Super-unit operation not onlyensures the accuracy of the case, but also greatly improves the computational efficiency.Secondly, building multi-body dynamics wind turbine by importing super elementmodel and the finite element mode. It was the bases for the design and certification of windturbine that the information of Campbell diagram and strain energy distribution wasobtained from the mode of vibration analysis.Finally, the wind model，load condition, load calculation and reprocessing is builtaccording to IEC61400-1standard. The controller performance test, the influence of windspeed of load, and automatic spectrum analysis was researched. In the controllerperformance test, the gust wind model and turbine model were loaded on wind turbine. Theresult shows that control system can respond timely. In the pitch analysis, pitch is effectingon load. The result shows the change of load by pitch from3m/s to25m/s in the timedomain. In automatic spectral analysis, the gearbox load was decided by FFT, the resultshows the spectrum density of2.4HZ is high. The result shows the point produceresonance combined with Campbell. |
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