Analysis Of Diagonal Spiral Vertical Axis Wind Turbine And Design Of Power Generation Device

As a clean renewable energy source with the most potential for development,wind energy is being used and developed worldwide.Under the support of wind power theory,various wind turbines have emerged.In this paper,we propose a diagonal spiral wind turbine structure to improve the wind turbine structure,enhance the aerodynamic performance of the wind turbine and improve the level of power generation,in view of the low utilization of wind energy in vertical axis wind turbines.In this paper,the three main factors affecting the aerodynamics of a diagonal spiral wind turbine are investigated and analysed in terms of wind energy utilisation,blade tip speed ratio,output torque,internal pressure of the wind turbine and blade vortex volume to obtain the optimum structure of a diagonal solenoidal wind turbine.A model of the wind turbine system is constructed and different wind speed environments are set up for simulation to provide reference for subsequent design.Simulation of the wind turbine and study to determine the motor parameters.Through 3D printing technology,build an experimental platform for wind turbine power generation and conduct experiments on the power generation performance of each type of machine under multiple wind speed conditions to verify the numerical simulation results.The main research elements are as follows:(1)Study of the influence of pitch angle on the structure.Simulate the working process of wind turbine through fluid simulation,analyse the influence of different pitch angle structures on aerodynamic performance,and study the changes of performance indexes such as wind energy utilisation,blade tip speed ratio and average torque.Wind speed cloud diagrams and wind turbine internal pressure cloud diagrams are used to understand the internal airflow movement state of the wind turbine.Establishing a traditional S-type wind turbine for comparison and demonstrating the rationality of the diagonal solenoidal wind turbine structure.(2)Analyse the effect of the separation height and width of the upper and lower ring plates on the internal diversion and diversion.The wind turbine models with different separation heights and 14 kinds of covering widths were constructed,and the simulation calculation was carried out respectively.The wind energy utilisation rate shows a trend of increasing and then decreasing,and the best structure with the best ring plate suitability is analysed and the wind energy utilisation rate increases to about 0.3.This further demonstrates the superiority of this wind turbine structure.Finally,a three-factor response surface analysis was carried out to determine the most suitable wind turbine structure,which is similar to the simulation analysis results.(3)Simulation and analysis of wind power systems.The simulation of the power and torque of the angular screw wind turbine wind power generation system is carried out by MATLAB under different wind speed scenarios.The simulation results show that the system can achieve effective tracking of the maximum power point and torque output of the wind power generation system,providing a certain reference basis for the construction of the experimental platform and the hardware and software implementation of the diagonal solenoidal wind power generation system in the future.(4)The double-layer disc-type ironless wind turbine was analysed by finite element software.Simulation analysis of different operating conditions to verify its suitability for vertical axis wind turbines.A wind turbine power generation test platform is built to test the power generation of the wind turbine,compare the power generation voltage of various types of wind turbine generators,and analyse the performance of the improved model in terms of low wind start,high wind power generation fluctuation,etc.