The Dynamic Characteristics And The Dynamic Response Of Wind Generator Tower

Wind power generator is a typical tall tower structure. In order to ensure the whole stability oftower system, selecting reasonable structure should be based on the self-vibration characteristicsanalysis, and structural material should be to minimize the structure in the working environment ofthe resonance effect. In the fan work environment, wind load is the primary design concern, thereforethe research on wind generator tower under the action of wind vibration response and extracting windvibration coefficient has important significance. In the foundation design, soil-structure interactionresponse has a certain impact on the power structure under seismic action, so it should beconsidered.In this paper, the wind generator tower system for the blade-room-tower-foundation-foundation integration model, and the principal work of this paper is in follow:(1) Modal analysis on a typical1.2MW wind generators had been conducted in this paper,and thedifferent frequencies and formation had been studied,and by changing the size variable,the vibrationeffect on the wind generator natural frequency had been discussed.Finally, according to the numericalexperiment results, this paper had fitted out a relationship function of the influence of variabledimensions of wind turbines on the fan baseband and overturning frequency.(2) The research on the wind-driven generator of wind-induced vibration response based onrandom vibration theory had been done through the input different wind velocity spectrum.Anddiscuss the impact of the different wind speed spectrum of wind-induced response. By computing thecoefficient of wind oscillation, getting will fluctuating wind load which had been simplifiedequivalent static load. Crest factor formula had been deduced. And the influence of different peakfactor on the wind vibration coefficient had also been discussed.(3) The dynamic response of the wind turbine tower under different seismic waves had beenstudied. Soil-structure interaction relationship had been realized by soil spring, and earthquakehistory analysis had been done on the situation between ground plane and solid foundation. Andanalysis results of the dynamic response between the two had been compared.(4) The last part of this paper is the summaryr, and gives the future development of the windturbine research proposals.