Adaptive active-passive hybrid tuned mass damper for vibration control of offshore wind turbines

Abstract

The invention discloses an adaptive active-passive hybrid tuning mass damper for offshore wind turbine vibration control, which includes at least one set of adaptive variable damping passive control systems arranged at the maximum amplitude of the controlled vibration type inside the wind turbine tower, and an adaptive variable damping passive control system. The direction changing active control system and the control system; the adaptive variable damping passive control system includes a reciprocating motion unit and a variable damping unit. The corresponding vibration control system can be activated according to the different vibration levels of the fan tower. Among them, the adaptive variable damping passive control system can use the instantaneous rheological characteristics of the magnetorheological damping fluid to instantly adjust the flow state of the magnetorheological damping fluid and consume it in time. The vibration energy of the fan improves the time-lag problem of the traditional vibration control device and ensures the safe operation of the fan; the self-adaptive variable-direction active control system can instantly adjust the direction of the output control force through the electric-driven rolling bearing, and the control reliability is high and the effect is high. it is good.

Description

technical field [0001] The invention relates to the technical field of ocean engineering, and more specifically relates to an adaptive active-passive hybrid tuned mass damper for vibration control of offshore wind turbines. Background technique [0002] The construction of offshore wind farms is the key development direction of my country's "energy transformation" construction. In recent years, with the country's strengthening of environmental protection and policy support for offshore wind power projects, offshore wind power has developed rapidly in my country in recent years. In offshore wind farms, fixed foundations such as large-diameter single piles, jackets, and suction buckets account for a large proportion. After the fixed foundation is completed, the piles will change the original hydrodynamic field in this area and form a secondary flow in front of the piles. The flow will form a vortex around it, and the speed of the flow around the pile will increase, which will...

AI Technical Summary

Problems solved by technology

However, due to the complex marine environment, offshore wind turbines will be subjected to long-term loads such as waves, sea winds, currents, and sea ice during operation. If a single control technology is used, the vibration control effect of the device may be weakened, and the control reliability will be reduced.

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