The Design Of Equiangular Spiral Vertical Axis Wind Turbine And Analysis Of Coupling Of Wind And Hydrogen

With the emergence of fossil energy shortage in recent years,new energy sources such as wind energy have become a hot topic of research,while vertical-axis wind turbine has been paid more and more attention by domestic and foreign scholars because of its advantages of no wind,low noise,small volume and easy maintenance,but the low efficiency of vertical axis wind turbine is still a problem.At the same time,as the "abandonment of wind" problem has gradually become prominent,the problem of incomplete utilization of wind energy has gradually attracted attention,and hydrogen production from wind power has provided a new idea for storing wind energy,and has become the focus of scholars at home and abroad in recent years.Based on this,the equiangular spiral vertical axis wind turbine similar to Nautilus by using the bionics principle was designed and analyzed,the results showed that the wind turbine has good performance,and then the hydrogen production system by wind power was built in MATLAB Simulink,the characteristics of the system was analyzed.The experimental results show that the wind turbine designed in this paper has better working efficiency,and has great advantages in starting performance compared with other types of vertical axis wind turbines.Firstly,a preliminary wind turbine model was established by using finite element analysis software.Based on the aerodynamics and fluid mechanics,the aerodynamic performance analysis was performed on the equiangular spiral vertical axis wind turbine by solving the N-S equation and using CFX software,on this basis,the structure of the wind turbine is optimized,the wind turbine studied in this paper is obtained.The working principle was explained,its torque coefficient and wind energy utilization factor was analyzed.Secondly,in order to better analyze the performance of the equiangular spiral vertical axis wind turbine,the equiangular spiral vertical axis wind turbine was compared with the improved Senegal wind turbine,and the stress situation,working efficiency,advantages and disadvantages of the two types of wind turbine were analyzed.Thirdly,based on the Jesen wake model,the wake distribution characteristics of the two types of wind turbine were studied,and the differences in the wake distribution of the two types of wind turbine were obtained,and different suggestions were made for the arrangement of the two wind turbine;Fourthly,a disc-type permanent magnet motor model based on a distributed vertical axis wind turbine was established,and the static and transient analysisof the magnetic field was performed.Then the calculation of the fluid dynamics software provided data support for the establishment of the wind power system.On this basis,combined with mathematical models of wind turbines and related converters,a wind-hydrogen coupling system of an equiangular spiral vertical axis wind turbine was established in the SIMULINK module of MATLAB,and the power generation performance of the system was simulated and analyzed under the condition of hydrogen load;Finally,the performance of the wind turbine was tested through experiments,and the mathematical model and simulation system of the equiangular spiral vertical axis wind turbine were verified.The accuracy of the aerodynamic performance analysis was verified,and the wind turbine had good practical value.