Wind Turbine Structure With Cable-Auxiliary Blade

Wind energy will be one of the most important parts of green power supply in the future,while wind power generator is a important way of wind energy exploitation these days.China's research on wind power generator started comparatively late,but due to recent years introduction,digestion and implementation of advanced technology from other countries,the localization of wind generator has had great progress.An important symbol of the development on wind power technology is the increase of generator unit capacity,which makes the blades tend to become large scale and this has brought forward higher request for the strength of the blade.This text design and research on a type of wind turbine with cable balance auxiliary structure,which is a horizontal axis generator with three blades.The steel girder of blades takes form by two variable cross-section high strength steel pipe crossing and twisting,between the girder are connective bars,which makes a twist truss,and thus the top of the three blades connect ed by cables which balance the torsion between blades.Based on the analysis to the aerodynamical theory of wind turbine,I choose the blade section,select the established angle,and the chord due to the structure,create two models with GAMBIT model-building software according to different purpose on analysis and solution.And use numerical simulation software FLUENT to do the analysis on these two models.Modelâ… applies for modeling and solving the force of blade under the extreme wind fast once occurred in 50 years.Modelâ…¡applies for solving wind turbine power and its utilization factor under the rated wind speed and rotation rate.Use structural analysis software SAP2000 to do the checking for strength,deformation,stability under the extreme load for the blade structure and do some primer research on the rotation rate on the blade.