Variable Speed Wind Turbine equipped with a Synchronous Generator
Author
Freitag, Christian
Term
3. term
Education
Publication year
2011
Submitted on
2011-01-04
Pages
80
Abstract
This master's thesis was initiated by a project proposal from Vestas Wind Systems A/S, a leading wind turbine manufacturer. It explores offshore wind farms in which turbines are interconnected using direct current (DC) and power is transmitted to shore via a high-voltage direct current (HVDC) link. This approach is promising given rising electricity demand and the long distances between offshore sites and the mainland. The main objective is to develop steady-state models (models of operation under normal, stable conditions) of a complete wind turbine system. The work focuses on selected AC-DC converters between the generator output and the turbines' DC connection, that is, devices that convert the generator's alternating current into direct current for the DC network.
Dette speciale udspringer af et projektforslag fra Vestas Wind Systems A/S, en af verdens førende producenter af vindmøllesystemer. Det undersøger havvindparker, hvor turbinerne er forbundet med jævnstrøm (DC), og hvor elektriciteten føres til land via en højspændt jævnstrømsforbindelse (HVDC). Denne løsning er lovende i lyset af stigende elforbrug og de lange afstande mellem hav- og landanlæg. Hovedmålet er at udvikle stationærtilstandsmodeller (modeller af drift under normale, stabile forhold) af et helt vindmøllesystem. Arbejdet fokuserer på udvalgte AC-DC-konvertere mellem generatorens udgang og turbinernes DC-forbindelse, dvs. de enheder der omdanner generatorens vekselstrøm til jævnstrøm til DC-nettet.
[This apstract has been rewritten with the help of AI based on the project's original abstract]