Structure Designs Into The Nacelle And Their Optimizations Of A Large Wind Turbine

With the rapid development of economy, human is increasingly depending anddemand energy resources. We are facing the problems of environmental pollution,shortages of energy, unsustainable development. Wind power industry to be seen as thefuture energy got a boom development over the past decade. Recent years, both thenumber of developers and the capacity of the wind turbine have been increased.However, this leads to manufacturing capacity of wind power industry going to exceed.Many developers feel big pressures from market for a reason that the benefits of theirproducts will shrink. Therefore, some head wind turbine manufacturing company comeback to improve their products’ quality. Aiming to reduce the costs of manufacturing,improve the mechanical performances of structures, and focus their energy onoptimization works. They have got some achievements on solving the problems ofvibration of generator, and also have some certifications of calculating. This papermainly introduce the methods of optimization of a wind turbine’ structure, designing theplatform and the beams in nacelle, solving the problem of vibrating. It provides aconsiderable plan on designing a similar structure.At first, we will check the strength a wind power generator’s platform. Get to knowthe real conditions of loads and the design space. Then, use the topology technology tofind out a better design plan. We can change the thicknesses of shells in order to reducethe mass of the whole structure via the Hyperstudy software.Secondly, base on the designed platform, the layout of the nacelle beams’ structurewill be optimized. And the sections of each beam can be replaced from data. At the verytime of concept design, structure topology should consider its compliance is everydirections, modal characters, maximum displacement. Combine with the manufacturingprocess, can we build the new structure. After that, Ansys’ solution will be called byModel Center. The latter one can automatically select a proper section for each beamdue to different load conditions.Finally, against the harmful vibration and the unbalance on the structure, design adamping system for generator. Further, to calculate the limit of fatigue of the platform.During this process, the whole dynamics property of a working wind turbine will beconsidered. Use the Femfat software to check out the fatigue life and Ansys software’stransient simulation to see the responses that damps get back.