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Torsional Damping Control of Gearless Full-Converter Large Wind Turbine Generators with Permanent Magnet Synchronous Machines

Torsional Damping Control of Gearless Full-Converter Large Wind Turbine Generators with Permanent... This study examines the torsional damping requirements for megawatt scale wind turbines having synchronous generators with full-wave ac/dc/ac inversion technology. The particular type has a low-speed permanent magnet synchronous generator with gearless drive train and a full power-frequency converter. The electrical connection via the full converter provides no torsional damping to reduce speed oscillations. With a large number of poles, this means that torsional oscillations in the mechanical drive train can be easily excited. The analysis investigates how control algorithms for the converters can help mitigate such torsional oscillations. The torsional oscillations, both during continuous operation in wind and during a voltage dip, are analysed. Improvements resulting from a controller are presented. A windfarm model is developed to analyse the possibility of interaction between individual controllers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Wind Engineering SAGE

Torsional Damping Control of Gearless Full-Converter Large Wind Turbine Generators with Permanent Magnet Synchronous Machines

Wind Engineering , Volume 31 (5): 16 – Oct 1, 2007

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References (10)

Publisher
SAGE
Copyright
© 2007 SAGE Publications
ISSN
0309-524X
eISSN
2048-402X
DOI
10.1260/030952407783418757
Publisher site
See Article on Publisher Site

Abstract

This study examines the torsional damping requirements for megawatt scale wind turbines having synchronous generators with full-wave ac/dc/ac inversion technology. The particular type has a low-speed permanent magnet synchronous generator with gearless drive train and a full power-frequency converter. The electrical connection via the full converter provides no torsional damping to reduce speed oscillations. With a large number of poles, this means that torsional oscillations in the mechanical drive train can be easily excited. The analysis investigates how control algorithms for the converters can help mitigate such torsional oscillations. The torsional oscillations, both during continuous operation in wind and during a voltage dip, are analysed. Improvements resulting from a controller are presented. A windfarm model is developed to analyse the possibility of interaction between individual controllers.

Journal

Wind EngineeringSAGE

Published: Oct 1, 2007

There are no references for this article.