| As people pay more and more attention to the living environment,renewable new energy is attracting more and more attention,and wind power generation is an important renewable energy source.The rapid development of renewable energy technologies has led to the mushrooming of wind turbines on land and offshore in the last decade or so..Wind turbines can be divided into horizontal and vertical axes according to their structure,with horizontal axis wind turbines being the most common type of wind turbine at present.type,which is characterized by high wind utilization rates,but the technology has become relatively mature and there has also been an increase in the installation,maintenance,and maintenance of very large wind turbines.High operating costs and other technical bottlenecks,making it difficult to significantly reduce the cost of wind power,which leaves the continued development of such wind turbines.difficult problem.Another type of vertical axis wind turbine type was developed at the beginning of its development due to,among other things,the lack of an effective design calculation method,making this type of wind turbine Development hindered.With the great progress of fluid mechanics in design and calculation techniques,and many practical problems encountered in the development of horizontal axis wind turbines.The unique technical characteristics of vertical axis wind turbines have aroused great interest among researchers.The research group proposed a type of wind power generation based on the Magnus effect for vertical axis wind turbines,compared with the traditional horizontal axis wind turbines.This type of wind turbine from the manufacturing,operation and maintenance costs and other aspects of the unique technical characteristics of the wind turbine technology has been pre-research on the In this paper,we systematically compare the characteristics of horizontal axis wind turbines with those of other wind turbines,and publish the results of relevant theoretical analysis.,control system,motion characteristics,and numerical simulation are investigated.Firstly,according to the operational characteristics of Magnus wind turbine,a structural model of vertical axis wind turbine with wheel-track mechanical structure is designed,which will The Magnus wind turbine and the model trolley are combined,and an external force drives the wind turbine blades to rotate in the wind farm,resulting in a force that is greater than the applied external force.The much larger Magnus force drives the model car to rotate on a circular track and converts the wind energy into kinetic energy of the model car.Obviously,whether this wind power type can eventually be transformed into practical technology,the wind energy utilization efficiency that can be obtained,the design calculation method and other kinds of Technical specifications are crucial and further theoretical exploration is needed.Therefore,based on the previous research,this paper further incorporates the motion characteristics of the model trolley and designs a closed-loop control system according to the The position of the model trolley regulates the speed and controls blade steering at the commutation point to explore the calculation of the wind energy efficiency of this type of wind turbine.Then,based on knowledge of aerodynamics,the flow function-vortex form in a noninertial coordinate system,based on the Reynolds-averaged Navi-The Stokes equation,combined with a turbulence model and a second-order windward algorithm,analyzes the motion characteristics of the Magnus wind turbine under dynamic stall,and Correction of the power of the wind turbine downwind of the wind turbine using an expansion model.Finally,using the fluid simulation software Fluent,based on the mathematical model of the Magnus wind turbine,a three-dimensional perspective of the Magnus Numerical simulations were carried out on the single blades of a wind turbine in both stationary and rotating states to derive flow and pressure distributions in three directions;simultaneously.Numerical calculations were carried out for the Magnus wind turbine in a three-dimensional numerical simulation,and the lift resistance and the blade in special positions were obtained.central torque.The above findings provide the necessary theoretical basis for further structural design and experimental studies of the model machine. |
