The vibration control problem of wind turbine blade surface under internal and external loads is studied.Based on the magnetorheological damper(MRD),the control of wind turbine blade vibration reduction is studied.Fuzzy con-trol and LQR control algorithm are combined to design the optimal control of MRD damping force to achieve the optimal vi-bration reduction control of the wind turbine blades.Firstly,the principle and mechanical model of MRD are introduced.Then,taking the NREL-5MW wind turbine as the numerical simulation object,the MRD dynamics model of the fan blade is established.Finally,a fuzzy LQR semi-active control algorithm is designed to track and identify the dynamic response of wind turbine blades under the load.The results show that both fuzzy control and fuzzy LQR control strategies have good vi-bration reduction effects compared with MRD blade response.Both strategies decrease the inside and outside blade response.In addition,the comparative analysis shows that the fuzzy LQR control effect is even better than the fuzzy control effect.Its blade vibration reduction effect is close to the displacement response under the LQR active control,which also fully demon-strates the rationality and superiority of the control method.
关键词
振动与波/风力机/叶片/磁流变阻尼器/半主动控制/模糊LQR控制
Key words
vibration and wave/wind turbine/leaf blade/magnetorheological damper/semi-active control/fuzzy LQR control
维普
万方数据