Improved energy conversion for doubly fed wind generators

Smith, A.C.; Todd, R.; Barnes, M.; Tavner, P.J.

doi:10.1109/tia.2006.882640

Improved energy conversion for doubly fed wind generators

Smith, A.C.; Todd, R.; Barnes, M.; Tavner, P.J.

Authors

A.C. Smith

R. Todd

M. Barnes

P.J. Tavner

Abstract

There is currently significant interest in offshore wind turbines up to 5 MW. One of the preferred options is doubly fed slip-ring generators. Turbine manufacturers have proposed an operating scheme for low speeds that is claimed to improve the overall energy extraction from the wind. This paper aims to examine the performance benefits for this new operational mode on a small experimental rig, confirmed by simulation, and to provide a fundamental understanding of the differences in the generator operation in both modes. This paper develops analytical steady-state models to provide this insight and correlates the operating performance with a dynamic real-time generator control scheme and experimental results obtained from a laboratory test machine. A theoretical study on a 2-MW commercial turbine is also undertaken.

Citation

Smith, A., Todd, R., Barnes, M., & Tavner, P. (2006). Improved energy conversion for doubly fed wind generators. IEEE Transactions on Industry Applications, 42(6), 1421-1428. https://doi.org/10.1109/tia.2006.882640

Journal Article Type	Article
Publication Date	Nov 1, 2006
Deposit Date	Apr 12, 2010
Publicly Available Date	Sep 13, 2010
Journal	IEEE Transactions on Industry Applications
Print ISSN	0093-9994
Publisher	Institute of Electrical and Electronics Engineers
Peer Reviewed	Peer Reviewed
Volume	42
Issue	6
Pages	1421-1428
DOI	https://doi.org/10.1109/tia.2006.882640
Keywords	Doubly fed (DF) generator, Induction generator (IG), Slip-energy recovery, Wind-turbine generator.

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