Wind energy has been one of the most important renewable energies as an alternative to fossil energy. The power rating of a single wind turbine has been increasing during the past forty years. A megawatt level wind turbine has been a tendency, especially for offshore wind energy application. The current common solution is to make the two-level low ...
Support structures for wind energy converters have become serial products. More than 1 350 wind turbines are installed offshore only in the German North and Baltic Sea. Structures of large dimensions being highly dynamically loaded and located in a harsh offshore environment are challenging and moving at the limit of design standards. However, seri...
Der Windenergiereport des Fraunhofer-Instituts für Energiewirtschaft und Energiesystemtechnik (IEE) berichtet wissenschaftlich und anschaulich über die jährliche Entwicklung der Windenergie. Der Zubau und Ertrag von On- und Offshore Windenergieanlagen, der Anteil der Windenergie im Strommix, die Netzintegration und die Schritte zum Netzausbau werde...
Moving forward, the demand on renewable energy resources is increasing due to their advantages over the fossil fuels, which have harmful effects on the environment. Currently, doubly fed induction generators (DFIG) are widely used for wind turbines. Compared to other variable-speed generators; the main advantage of the DFIG is that the power electr...
