Research On Modeling And Control Of Airborne Wind Energy System

Airborne wind energy(AWE)has the advantages of low power generation cost,high power generation efficiency,environmental protection,etc.The research of airborne wind energy system(AWES)and its power generation technology is of great significance in the field of high altitude wind energy utilization.In order for the airborne wind energy system to operate reliably and lastingly,system modeling and controlling tether wing flight during power generation are key issues in the field.The main research content of this article includes the following aspects:(1)AWES is classified in detail according to the energy generation method and kite structure type.The advantages and disadvantages of the ground power generation system and the flight power generation system,the flexible and rigid wing systems,and the multi-wing system are introduced respectively.By summarizing the characteristics of these systems,it is concluded that the ground power generation system is more suitable for large-scale wind power generation.(2)Following the definition of the physical problem,analyze the dynamics of the tethered kite,and establish the basic relationship between the system and each parameter.The problem of traction power generation is elaborated under the assumption that the kite has no mass.A stable analysis framework was extended for gravity,and it was concluded that an increase in the mass of airborne components would reduce the available traction power of the wing.(3)A dynamic and aerodynamic model of a tethered kite system is proposed.After introducing system settings and model assumptions,the equations of motion are derived and discussed,proving that the model covers the relevant range of flight dynamics.Then,a deviation is introduced in the law of kite turning rate of steering response.A controller model is designed with the central control variable of the elevation angle of the kite wing.Through simulation analysis and comparison with experimental data,it is proved that the model is suitable for controller design.(4)The theoretical model of the kite power generation system in the pumping operation mode is designed.The concepts of pumping efficiency,circulation efficiency and total efficiency related to the motion model are defined.distinguish.The relationship between the work performance of the kite running in figure 8 and the wind speed was simulated and analyzed,and some useful conclusions were drawn,which laid a theoretical foundation for the design of kite power generation equipment and control strategies from the perspective of kinematics.