Vibration control in wind turbines to achieve desired system-level performance under single and multiple hazard loadings

Abstract

The increased demand in energy and the need for sustainable and renewable sources of electricity in hazardous environments with significantly growing population yields the installation of more wind turbines in these areas. In addition, the technological development in material and construction methods has led to the building of taller and more flexible turbines, with inherent low structural damping. Installing modern wind turbines in offshore harsh environments or seismic prone areas can cause an increment in the probability of failure due to excessive vibrations. The current study evaluates the performance of onshore and offshore wind turbines under multihazard loads, including wind, wave, earthquake, and mass and aerodynamic imbalances for both parked and operating conditions. The Lagrangian approach is employed to model the wind turbine considering the blade/tower coupling. In order to lessen the vibrations induced by multihazard loads, external smart dampers are used and a novel energy-based probabilistic approach is employed to tune the semiactive controllers. The results show the effectiveness of employing an analytical approach for the design of semiactive controllers in vibration mitigation of a wind turbine subjected to multiple hazards.

Analysis of a Benchmark Building Installed with Tuned Mass Dampers under Wind and Earthquake Loads

“…e structure considered in this study is a 76-story benchmark building, which is very sensitive to wind [33][34][35][36]. Detailed information of the building can be found in reference [33,35]. Different control schemes considered in this study are illustrated in Figure 1.…”

“…Chapain and Aly [32] reported that viscous dampers showed their potential to enhance dynamic performance of buildings under multiple hazards. Earlier to this, Rezaee and Aly [33,34] reported that semiactive controllers were quite effective in vibration mitigation of a wind turbine subjected to multiple hazards.…”

“…Consideration of multihazard performance is therefore important, especially for very tall and other structures which are sensitive to wind. A few studies have presented performance of buildings with/without vibration controller devices under both wind and earthquake excitations [25][26][27][28][29][30][31][32][33][34]. ese studies show that while earthquake ground motions cause large floor acceleration demand, wind forces induce large interstory drift demands in tall buildings.…”

Seismic Response Mitigation of Base-Isolated Buildings

“…Tuned mass dampers (TMDs) are one of the common control methods used for response mitigation of structures under dynamic loadings. Their applications in various situations and loads have been addressed by several researchers [1][2][3][4][5][6][7]. As single tuned mass dampers (STMDs) became popular, a more practical solution, for example, by distributing TMD mass over the structure is being investigated in recent times [8][9][10][11][12][13][14][15][16].…”

Experimental research on design parameters of basin tuned and particle damper for wind turbine tower on shaker

“…Although its damping force is generated passively by the motion with the structure, the control device can use external energy to adjust its damping force. Typical devices are magneto‐rheological dampers . Passive control is a method consuming no external energy, and its damping force is generated passively by the vibration deformation with the structure.…”