Wind-induced Vibration Control Of Wind Power Tower With RITMD

As one of the renewable and clean energy sources,wind power has received universal attention from all over the world.With the increasing installed capacity of the wind turbine,the structure of the wind power tower is more flexible,which leads to the invention of the dynamic response of the wind load,which affects the normal operation of the cabin transmission system and even the entire wind turbine.At present,TMD or TLD is mainly used to control the wind-induced vibration response of the tower structure.However,it is necessary to add a certain amount of mass to reach a certain control effect,and it is difficult to apply the installation due to space limit.Therefore,it is very important to study an effective and applicable control method.The rotary inertial mass TMD(RITMD)proposed in this essay is an effective control method.The additional mass is much smaller than the conventional TMD,the installation space is small,and the dynamic response of the wind tower can be effectively reduced..In this essay,we programme by ourselves to studies the dynamic response and damping control of wind turbines,based on the generation and calculation of wind load,structural coupling of wind turbine,structural dynamic response analysis and damping control damper structure,Firstly,the Kaimal model is used to generate the pulsating wind,and based on the leaf mass momentum(BEM)theory,the aerodynamic load subroutine of the fan blade is programmed.Then the hypothetical modal method is used to discretize the fan dynamics model,and the blade and tower are respectively modal analysed;then based on the generalized coordinate system,the eight-degree-of-freedom wind turbine model is established,and the dynamic analysis program of the wind turbine system is programmed to realize the coupling calculation of the blade and tower dynamic response;then the traditional TMD and the magnetoelectric inertial damper are respectively used as The damping unit is added to the system,the dynamic equilibrium equation is derived according to the Lagrangian equation,and the power analysis program of the fan system is written into the fan system.Finally,the damping effect of the traditional TMD and the magnetoelectric inertial damper RITMD is compared to study the influence of various parameters of the magnetoelectric.inertia damper on the damping effect of the fan.The calculated wind-induced tower wind-response calculation program is consistent with the GH Bladed calculation results,which verifies the reliability of the self-programming process.Based on the Lagrangian equation,the wind turbine tower motion equations of TMD and RITMD units are established,and the above-mentioned wind power tower is rewritten.The wind-induced response calculation program realizes the vibration reduction analysis of wind power tower TMD and RITMD.The program is used to analyze the wind-induced response analysis of magnetoelectric RITMD and traditional TMD wind tower.The results show that RITMD only needs 10% of traditional TMD quality.Its damping control effect is still due to the traditional TMD control effect.