Integrated design of wind power systems

Analysis of the grid integration of wind power systems requires advanced modeling tools that can evaluate the performance of each component and provide solutions for a better design. Nowadays, these modeling tools are specialized in specific research domains e.g. mechanical dynamics, power system analysis and control algorithms. If interactions of the Wind Power System components occur on separate domains, there is the need for a cross platform simulation involving several simulation tools, a process commonly known as Integrated Design. This research project is adressing these issues and provides verified simulation platforms. Simulation tools such as power system dedicated tool DIgSILENT, general design tool Matlab/Simulink and mechanical modeling of Wind Turbines application HAWC2 are used throughout the project work. A detailed study of the available interface is performed in the first part. Specifically, simple models of different components are built in Matlab/Simulink and afterwards interfaced with the main model available in DIgSILENT. The study continues with analysis of short and medium term phenomena for wind power applications. The cases of a WT driven by a directly connected squirrel cage induction machine and a WT with full rating power converter are used to analyze the performance of the cross platform simulation. The use of Simulink/Plecs blocks for defining electrical components has furthermore extended the modeling possibilities to the power electronics research area