Modeling And Analysis Of Vertical Axis Wind Turbine For Distributed Generation

With the global energy crisis and environmental issues continue to highlight,an increasing number of countries and regions have begun to pay attention to the development and utilization of wind power generation.The wind turbine is divided into horizontal axis wind turbine and vertical axis wind turbine according to the position of the rotor axis and the ground.With the development of computer technology,the application of computational fluid dynamics(CFD)provides a basis for the research of vertical axis wind turbine.In recent years,vertical axis wind turbine has received extensive attention from researchers in various countries due to its advantages such as highly efficient,noiseless,easy maintenance,no need to install yaw device,etc.This paper mainly introduces the popular vertical axis wind turbine at present.It briefly describes the structure and working principle of the Senegal type wind turbine.Combined with the characteristics of the vertical axis wind turbine and the horizontal axis wind turbine,a new type of wind turbine structure with horizontal placement of wind turbine is been proposed.Based on aerodynamics principle and fluid mechanics software,the simulation of the fluid-structure interaction between the new turbine and the air is simulated through the N-S equation solution and the Simple algorithm.The integrated force state in the wind field is analyzed,and the unit structure of double row wind turbine and three row wind turbine are introduced.The simulation analysis is carried out and compared with the simulation data of the single wind turbine.The research results demonstrate that the new structure of the wind turbine has high wind energy utilization coefficient and small torque ripple,and the structure of the new unit improves the wind energy utilization rate compared with the single wind turbine.Due to the adoption of a special two-degree-of-freedom motor,the blades can still face the wind when it rotates so as to make full use of the wind energy,which provides a basis for further design and optimization of this kind of wind turbine.By way of proposing and establishing the three-dimensional model of the new vertical axis wind turbine,the CFX and Fluent modules in Ansys Workbench software are used to solve the model.Based on the above model,the model of wind power generation system is set up by the MATLAB software and the simulation analysis is carried out in combination with the load characteristics of electrolysis hydrogen.The results show that the established model and simulation analysis method are in line with reality,which provides reference for the simulation and analysis of the generator system and the application of energy storage.