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Influence of pole-pair combinations on the characteristics of the brushless doubly fed induction generator

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Oraee, Ashknaz, McMahon, Richard A., Abdi, Ehsan, Abdi , Salman and Ademi, Sul (2020) Influence of pole-pair combinations on the characteristics of the brushless doubly fed induction generator. IEEE Transactions on Energy Conversion . doi:10.1109/TEC.2020.2982515 (In Press)

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Official URL: http://doi.org/10.1109/TEC.2020.2982515

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Abstract

The brushless doubly fed induction generator (BDFIG) is an alternative to the doubly fed induction generator (DFIG), widely used in wind turbines which avoids the need for brush gear and slip rings. The choice of pole numbers for the two stator windings present in the BDFIG sets the operating speed range but also affects the torque capability, magnetizing currents and back iron depth. Analytical expressions are developed for these effects and a comparison is made between the BDFIG and the conventional DFIG. The torque capabilities and magnetizing currents are not strongly dependent on the choice of pole numbers but the back iron depth is significantly affected. The torque density of the BDFIG is somewhat reduced compared to a similarly sized DFIG but magnetizing currents per unit torque are the same. However, the required back iron depths are greater. The work also shows that multi-megawatt machines are expected to work within the desired range of power factors at acceptable efficiencies.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Electric motors, Brushless -- Design and construction, Wind power, Renewable energy sources, Electric machinery, Induction, Wind turbines
Journal or Publication Title: IEEE Transactions on Energy Conversion
Publisher: IEEE
ISSN: 0885-8969
Official Date: 23 March 2020
Dates:
DateEvent
23 March 2020Published
12 February 2020Accepted
Date of first compliant deposit: 8 July 2020
DOI: 10.1109/TEC.2020.2982515
Status: Peer Reviewed
Publication Status: In Press
Publisher Statement: © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
3154Seventh Framework Programmehttp://dx.doi.org/10.13039/100011102

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