Browsing School of Engineering by Author "Fitzgerald, Breiffni"
Now showing items 21-32 of 32
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Numerical modelling of a monopile for estimating the natural frequency of an offshore wind turbine
Fitzgerald, Breiffni (2018) -
Observer based pitch control for load mitigation and power regulation of floating offshore wind turbines
Fitzgerald, BreiffniMost commercial wind turbines use proportional-integral (PI) collective blade- pitch control to regulate rotor speed in the above-rated wind speed regime. A significant drawback of this type of controller is that it ... -
Physics-Informed Neural Network surrogate model for bypassing Blade Element Momentum theory in wind turbine aerodynamic load estimation
Fitzgerald, Breiffni (2024)This paper proposes the use of Artificial Neural Networks (ANNs), specifically Physics-Informed Neural Networks (PINNs), for dynamic surrogate modelling of wind turbines. PINNs offer the flexibility to model complex ... -
A Review of Rapid Distortion Theory
Fitzgerald, Breiffni; Basu, Biswajit (2022)With the depleting non-renewable fuel sources like coal and an ever-increasing demand for energy, we need to start looking into renewable energy sources. These are of paramount importance for a sustainable and green future. ... -
Structural damping estimation from live monitoring of a tall modular building
Fitzgerald, Breiffni; Broderick, Brian (2023)The damping ratio is a key indicator of an individual structure's susceptibility to dynamic loads, including the level of discomfort experienced by the occupants of a tall building subjected to wind loading. While ... -
A study of wind-wave misalignment for the Irish coastline and its effect on the wind turbine response
Fitzgerald, Breiffni (2022)A wind turbine is one of the largest rotating structures on earth. More wind turbines are now being developed with taller towers and longer blades, making them more flexible. As a result, an offshore wind turbine can ... -
The Uncertainty of Damping Ratios Obtained Using Modal Identification Techniques and Full-Scale Acceleration Data
ICASP14; Broderick, Brian; Fitzgerald, Breiffni; Hickey, John; Moore, Hollie (2023)The damping ratio of a structure has a large influence on its ability to meet serviceability and habitability requirements under dynamic loading. In practice, design analysis relies on estimates of damping ratios from ... -
Tuned mass-damper-inerter (TMDI) for suppressing edgewise vibrations of wind turbine blades
Fitzgerald, Breiffni (2020)This paper proposes the use of a tuned mass-damper-inerter (TMDI) for the mitigation of edgewise blade vibrations in wind turbines. The hollow nature of the wind turbine blades is utilized to install a TMDI at a location ... -
Validation of Acceleration Response Modelling for Modular High Rise Structures through Full Scale Monitoring
Fitzgerald, Breiffni; Broderick, Brian; Hickey, John (2023)For many tall building forms, habitability requirements associated with excessive acceleration response become a governing design criterion as building heights increase. The application of modular construction methods ... -
Vibration control of spar-type floating offshore wind turbine towers using a tuned mass-damper-inerter
Fitzgerald, Breiffni; Sarkar, Saptarshi (2019)This paper investigates the use of a passive tuned mass‐damper‐inerter (TMDI) for vibration control of spar‐type floating offshore wind turbine towers. The TMDI is a relatively new concept as a passive vibration control ... -
Vibration Control of Wind Turbines: Recent Advances and Emerging Trends
Fitzgerald, Breiffni; Basu, Biswajit (2020)The wind energy sector globally is expanding and developing technically at a rapid pace. Demand for renewable energy is soaring and there is a need for increasing the efficiency and design life of wind turbine ... -
Wavelet‐based individual blade pitch control for vibration control of wind turbine blades
Fitzgerald, Breiffni; Basu, Biswajit (2019)This paper proposes a novel individual blade pitch control strategy with the objective of reducing blade vibration. A wavelet linear quadratic regulator (LQR) control algorithm, which is an advanced modification of the ...