Dynamic Load Prediction in Offshore Wind Turbines

Title

Dynamic Load Prediction in Offshore Wind Turbines

 Author

Rama Pandian, Monish (TU Delft Electrical Engineering, Mathematics and Computer Science; TU Delft Aerospace Engineering; Royal Boskalis Westminster)

Contributor

Yu, W. (mentor) ORCID 0000-0001-7829-6129
Ferreira, Carlos (graduation committee) ORCID 0000-0003-0192-3651
Hendrikse, H. (graduation committee) ORCID 0000-0003-2252-4625
Luites, W (graduation committee)

Degree granting institution

Delft University of Technology

 Programme

Electrical Engineering | Sustainable Energy Technology

 Date

2021-11-26

 Abstract

The rapid development of the wind industry over the past few years has pushed turbine manufacturers to meet the growing energy demands by designing and producing large scale wind turbines.This also means development of larger monopile foundations for the foundation designers in the case of offshore wind turbines.\ Generally, the turbine tower and monopile are modeled together and the loads from the rotor-nacelle assembly are provided by turbine manufacturers.\ The offshore industry is now showing more interest in extracting the loads from the top mass by developing their own tools in order to reduce the dependency on the manufacturers. In order to aid in this process, the present master thesis aims to develop a linear model based on the concept of Dynamic Substructuring which employs a set of equations to compute the interface forces using the kinematics.\ Furthermore, the developed prediction model is used to analyze the loads occurring at the interface between the rotor-nacelle assembly and the tower for different wind speeds and wind conditions.Consequentially, the model was found to produce acceptable loads at higher wind speeds for selected degrees of freedom at the interface while failing to do the same for other degrees of freedom.The results in time domain were converted to the frequency domain to analyse the resonance.The influence of resonance on the interface degrees of freedom was found to be higher at wind speed below the rated condtion.\ These findings can be used as a basis to conduct further investigations into the application of numerical integration concepts to aeroelastic structures.

 Subject

wind turbine
Structural Dynamics
Offshore wind energy
model development

 To reference this document use:

http://resolver.tudelft.nl/uuid:9e981fcf-7ff0-40a9-a8ee-6b453cdc8e11

 Part of collection

Student theses

 Document type

master thesis

 Rights

© 2021 Monish Rama Pandian
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