To suppress the side-to-side vibrations of the wind turbine tower,a method is proposed in the design of the controller by using vibration velocity feedback to increase the structural damping of the tower in the side-to-side directions.Firstly,the side-to-side vibration acceleration signals of the tower top cabin are integrated to obtain the vibration speed signal.Then,a second-order band-pass filter is used to obtain the main component of the tower frequency.Finally,it is multiplied by the gain coefficient and added to the generator torque.Taking Shanghai Electric's 3.45 MW high-speed permanent magnet synchronous wind turbine as the research object,the control strategy is adjusted and simulated based on Bladed software modeling and Matlab platform,and is applied to the on-site control system for the first time.The results show that the proposed speed feedback can effectively reduce the side-to-side vibration acceleration of the tower,reduce the failure rate to a certain extent,and extend the life of the wind turbine.This study provides a practical reference for the design and application of active vibration reduction methods for wind turbines.
维普
万方数据