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Analysis and study of floating offshore wind turbines
Table of Contents
Abstract
Acknowledgements
Table of Contents
List of Figures
List of Symbols
List of Abbreviations
1. Introduction
1.1. Floating offshore wind turbines
1.2. Structural control of floating offshore wind turbines
1.3. Summery of existing simulation tools for floating offshore wind turbines
1.4. Doubly-fed induction generators for floating offshore wind turbines
1.5. Thesis objectives
1.6. Thesis organization
2. Modeling of floating offshore wind turbines using MATLAB/Simulink
2.1. Overview of floating offshore wind turbines model
2.2. Determine ideal pitch actuator requirements
2.3. Supervisory control system of wind turbine
2.4. Stateflow model
2.5. Determine yaw actuator requirements
2.6. Modeling the wind force on the blades
2.6.1. Single Element Model
2.6.2. Multiple Element Model
2.6.3. Calculating lift and drag
2.6.4. Segmented blade approach
2.7. Tower subsystem
2.8. Simulation results
2.8. Conclusion
3. Modeling of DFIGs for floating offshore wind turbines
3.1. Introduction
3.2. Advantages of doubly-fed induction generators
3.3. Time-domain simulation of the DFIG connected to the gird
3.3.1. Power system connection
3.3.2. Bidirectional converter
3.3.3. Induction machine
3.4. Design controller for DFIG and wind turbine
3.4.1. Pitch controller
3.4.2. DFIG current controller
3.4.3. Power controller
3.4.4. Simulation results
3.5. Conclusion
4. Structural control of floating offshore wind turbines
4.1. Passive structural control
4.1.1. Passive tuned mass damper
4.1.2. Other passive structural control designs
4.2. Semi-active structural control
4.3. Active structural control
4.3.1. Active mass damper
4.3.2. Hybrid mass damper
4.4. NREL 5 MW turbine and platform models
4.5. FAST-SC code overview
4.5. Conclusion
5. A new bidirectional converter for floating offshore wind turbines
5.1. Introduction
5.2. Power quality conditioner
5.2.1. DC-DC bidirectional converter
5.2.2. Ultracapacitor
5.2.3. Shunt inverter
5.3. New bidirectional converter for FOWTs
5.4. A survey on existing NIBDCs
5.4.1. Soft-switched NIBDCs with ZCT/ZVT techniques
5.4.2. NIBDCs with coupled inductors
5.5. The proposed soft-switched NIBDC
5.5.1. Buck mode
5.5.2. Boost mode
5.6. Simulation and experimental results
5.7. Converter control
5.8. Conclusion
6. Conclusion and future work
References Bài viết liên quan
