Research On Design And Manufacturing Technology Of Elastic Support For High-power Wind Turbine

The mechanical properties and vibration reduction effect of the elastic support of the wind turbine directly affect the safety of wind turbine operation,and the economic and sustainable development of China’s wind power industry.With the increase of power generation,the performance requirements for the elastic support become higher and higher.However,the domestic wind power industry starts late and the foundation is thin,so all aspects of research need to be developed.Although the elastic support of small-power wind turbines has been made independently,the elastic support of high-power wind turbines is still dominated by imitation.Aiming at the lack of R&D and production of high-power wind turbines for domestic enterprises,according to the basic data of the high-power wind turbine vibration reduction system,a dynamic simulation model of the high-power wind turbine vibration damping system was established.The structural design of the elastic support was studied,and the finite element analysis and experimental verification were verified.Finally,in order to improve the design efficiency and save the production cost,the system software is built according to the design and development process of the elastic support.The research content and achievements of this paper are as follows:(1)According to the vibration characterization parameters and basic data of the wind turbine vibration reduction system,the dynamic characteristics of the wind turbine are analyzed.Taking the elastic support of the generator as an example,the wind turbine vibration reduction system is simulated.According to the analysis results,the optimal design is made,so that the wind turbine has good vibration reduction effect during the work.(2)Conduct research on the design of elastic support structures for wind turbine generators.Through the study of the metal parts and rubber parts with different quantities,shapes and sizes,the main factors affecting the stiffness of the elastic support are analyzed.The metal parts and rubber parts are combined according to the analysis results,which determines the structural type and dimensional parameters of the elastic support.(3)The elastic support of high power wind turbine is analyzed by finite element method.The structural strength and deformation of the key components and their composite bodies are analyzed,so that the stiffness satisfies the technical requirements and reduces thestress concentration.The rationality of the analysis results was verified through experiments,which improved the reliability of product design.(4)Focused on the problem of low efficiency and high cost of production,combined with the design and development process of the elastic support,product serialization,standardization,generalization,and modularization are designed,the CAD/CAE system for wind turbine elastic support components is developed,The feasibility and practicability of the system are verified by an example.