Wind turbine blade damping semi-active bidirectional coordinated vibration control device and mounting method

Abstract

The invention discloses a wind turbine blade damping semi-active bidirectional coordinated vibration control device and a mounting method. A constant mass block (48) is a permanent magnet, and the upper and lower surfaces are connected with steel wire ropes (2); two additional mass blocks (41) are provided and symmetrically arranged on the two sides of the constant mass block (48); mounting coils(40) are mounted on the side surfaces near the constant mass block (48); friction resisting plates (44) are welded on the upper and lower surfaces, and are directly contacted with the inner surfaces of upper and lower plates (46) mounted in a zigzag fixed plate (42) through balls (47); the side surfaces not provided with coils (40) are connected to the side surfaces of the zigzag fixed plate (42)by shape memory alloy springs (45); the zigzag fixed plate (42) is bonded on the inner surfaces of blades (5); and elliptic columnar holes for enabling the steel wire ropes (2) to penetrate through are formed in the upper and lower plates (46). The method comprises the steps of completion of mounting of a mass device (4), completion of mounting of a transmission device and completion of mounting of the whole semi-active bidirectional coordinated vibration control device.

Description

technical field [0001] The invention relates to the technical field of wind power structure vibration reduction control, in particular to a semi-active two-way coordinated vibration control technology suitable for wind turbine blade vibration reduction. Background technique [0002] Vibration control is a hot spot in the design and research of modern wind turbines. As the volume of wind turbines becomes larger and the blades become more flexible, severe vibration will occur under the action of external wind, which will affect the safe operation and service life of wind turbines. At present, the maximum capacity of a single wind turbine in operation has reached 7MW, and wind turbines of more than 10MW are being developed, and the diameter of the wind wheel can reach 120m. difficulty. Its good vibration control design and reliable vibration damping connection directly affect the power generation efficiency and operation stability of the wind turbine. [0003] Due to the inco...

AI Technical Summary

Problems solved by technology

However, for general TMD, the overall mass is kept constant during the motion process, and does not change with the magnitude of the external load excitation, thus limiting its scope of use. Therefore, a semi-active two-way semi-active bidirectional method that adjusts the required mass with external excitation changes is provided. Coordinated vibration control devices have important guiding significance for the field of wind power generation vibration reduction control

Images