Maximum Power Control of Wind Power Generation System Based on Model Reference Adaptive Disturbance Rejection Control
To generation system is constructed bachieve maximum output power tracking of direct-drive permanent magnet synchronous generator(PMSG),a maximum power control sys-tem for permanent magnet synchronous wind power generation system is constructed based on model reference adaptive active disturbance rejection controller.First,a model reference adaptive system(MRAS)is constructed to estimate the angular velocity of the wind power generation sys-tem and achieve position free control of the control system.At the same time,in response to the problems of slow tracking and overshooting with PI feedback adaptation in traditional model ref-erence adaptive systems,a pseudo differential feedback adaptation rate is proposed to improve the accuracy of position free control.Furthermore,in order to improve the dynamic response per-formance of PMSG and enhance the anti-interference performance of the system,a speed loop ac-tive disturbance rejection control(ADRC)strategy is designed.It can effectively track wind speed and ensure maximum power tracking performance at different wind speeds.The simulation results show that when the wind speed changes slightly,the speed estimation error of the pro-posed control strategy is very small,while the initial position estimation error of the traditional MRAS control strategy exceeds 10 rad/s,with a certain tracking error in the dynamic process.When the wind speed changes sharply,the speed tracking error of the proposed control strategy is not very large,while the error of the traditional MRAS control strategy exceeds 10 rad/s.The research results show that the proposed control strategy can realize accurate speed tracking and demonstrate good dynamic performance.
NETL
NSTL
万方数据
维普
