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Table of Contents
Intro
Supervisors' Foreword
Abstract
Acknowledgements
Contents
Nomenclature
Latin Symbols
Greek Symbols
Abbreviations
List of Figures
List of Tables
1 Introduction
1.1 Potential of Floating Offshore Wind Technology
1.2 Challenges Towards Next Generation Floating Offshore Wind Turbines
1.3 Aim and Objectives
1.4 Thesis Structure
1.5 Publications in Connection with the Research Thesis
References
2 Review of Reliability-Based Risk Analysis Methods Used in the Offshore Wind Industry
2.1 Classification of Reliability Methods
2.1.1 Qualitative Reliability Methods
2.1.2 Semi-Quantitative Reliability Methods
2.1.3 Quantitative Reliability Methods
2.2 Approaches for Qualitative Reliability Analyses of Offshore Wind Turbine Systems
2.2.1 Failure Mode Analyses
2.2.2 Tree-Shaped, Diagrammatic, and Graphical Analyses
2.2.3 Hazard Analyses
2.3 Approaches for Quantitative Reliability Analyses of Offshore Wind Turbine Systems
2.3.1 Analytical Methods
2.3.2 Stochastic Methods
2.3.3 Bayesian Inference
2.3.4 Reliability-Based Design Optimization
2.3.5 Multivariate Analyses
2.3.6 Data Foundations
2.4 Discussion of Reliability Methods for Offshore Wind Turbine Systems
References
3 Floating Offshore Wind Turbine Systems
3.1 Critical Review of Floating Support Structures Focusing on Offshore Wind Farm Deployment
3.1.1 Review of FOWT Support Structures
3.1.2 Assessment of FOWT Support Structures
3.2 Reference Spar-Buoy Floating Wind Turbine System
3.2.1 Wind Turbine and Tower
3.2.2 Floating Structure and Station-Keeping System
References
4 Modeling, Automated Simulation, and Optimization
4.1 Development and Verification of a Numerical FOWT System Model of Dynamics
4.1.1 Numerical Modeling of the Reference Spar-Buoy FOWT System in MoWiT
4.1.2 Code-to-Code Comparison
4.1.3 Discussion of the Code-to-Code Comparison Results
4.2 Development of a Numerical Framework for Wind Turbine Design and Optimization
4.2.1 Framework for Automated Simulation
4.2.2 Application for DLC Simulations
4.2.3 Incorporation of Optimization Functionalities
4.2.4 Discussion of the Broad Application Range of the Framework to Wind Turbine System Optimization Tasks
4.3 Appendix to Chap. 4
4.3.1 Statistics of DLC 4.2
4.3.2 Statistics of DLC 5.3
References
5 Design Optimization of Floating Wind Turbine Support Structures
5.1 Design Optimization Based on Global Limit States
5.1.1 Description of the System to Optimize
5.1.2 Optimization Problem of the Global Design Optimization Task
5.1.3 Optimization Approach for the Design Optimization Based on Global Limit States
5.1.4 Results of the Design Optimization Based on Global Limit States
5.1.5 Discussion of the Design Optimization Approach Based on Global Limit States
Supervisors' Foreword
Abstract
Acknowledgements
Contents
Nomenclature
Latin Symbols
Greek Symbols
Abbreviations
List of Figures
List of Tables
1 Introduction
1.1 Potential of Floating Offshore Wind Technology
1.2 Challenges Towards Next Generation Floating Offshore Wind Turbines
1.3 Aim and Objectives
1.4 Thesis Structure
1.5 Publications in Connection with the Research Thesis
References
2 Review of Reliability-Based Risk Analysis Methods Used in the Offshore Wind Industry
2.1 Classification of Reliability Methods
2.1.1 Qualitative Reliability Methods
2.1.2 Semi-Quantitative Reliability Methods
2.1.3 Quantitative Reliability Methods
2.2 Approaches for Qualitative Reliability Analyses of Offshore Wind Turbine Systems
2.2.1 Failure Mode Analyses
2.2.2 Tree-Shaped, Diagrammatic, and Graphical Analyses
2.2.3 Hazard Analyses
2.3 Approaches for Quantitative Reliability Analyses of Offshore Wind Turbine Systems
2.3.1 Analytical Methods
2.3.2 Stochastic Methods
2.3.3 Bayesian Inference
2.3.4 Reliability-Based Design Optimization
2.3.5 Multivariate Analyses
2.3.6 Data Foundations
2.4 Discussion of Reliability Methods for Offshore Wind Turbine Systems
References
3 Floating Offshore Wind Turbine Systems
3.1 Critical Review of Floating Support Structures Focusing on Offshore Wind Farm Deployment
3.1.1 Review of FOWT Support Structures
3.1.2 Assessment of FOWT Support Structures
3.2 Reference Spar-Buoy Floating Wind Turbine System
3.2.1 Wind Turbine and Tower
3.2.2 Floating Structure and Station-Keeping System
References
4 Modeling, Automated Simulation, and Optimization
4.1 Development and Verification of a Numerical FOWT System Model of Dynamics
4.1.1 Numerical Modeling of the Reference Spar-Buoy FOWT System in MoWiT
4.1.2 Code-to-Code Comparison
4.1.3 Discussion of the Code-to-Code Comparison Results
4.2 Development of a Numerical Framework for Wind Turbine Design and Optimization
4.2.1 Framework for Automated Simulation
4.2.2 Application for DLC Simulations
4.2.3 Incorporation of Optimization Functionalities
4.2.4 Discussion of the Broad Application Range of the Framework to Wind Turbine System Optimization Tasks
4.3 Appendix to Chap. 4
4.3.1 Statistics of DLC 4.2
4.3.2 Statistics of DLC 5.3
References
5 Design Optimization of Floating Wind Turbine Support Structures
5.1 Design Optimization Based on Global Limit States
5.1.1 Description of the System to Optimize
5.1.2 Optimization Problem of the Global Design Optimization Task
5.1.3 Optimization Approach for the Design Optimization Based on Global Limit States
5.1.4 Results of the Design Optimization Based on Global Limit States
5.1.5 Discussion of the Design Optimization Approach Based on Global Limit States