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Improved energy conversion for doubly fed wind generators.

Smith, A. C. and Todd, R. and Barnes, M. and Tavner, P. J. (2006) 'Improved energy conversion for doubly fed wind generators.', IEEE transactions on industry applications., 42 (6). pp. 1421-1428.

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.

Item Type:Article
Keywords:Doubly fed (DF) generator, Induction generator (IG), Slip-energy recovery, Wind-turbine generator.
Full text:PDF - Published Version (198Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1109/TIA.2006.882640
Publisher statement:©2006 IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Record Created:12 Apr 2010 14:20
Last Modified:14 Dec 2011 10:09

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