Optimisation of Magnetic Circuit for Brushless Doubly Fed Machines

Salman Abdi Jalebi, Ehsan Abdi, Ashknaz Oraee, Richard McMahon

    Research output: Contribution to journalArticlepeer-review

    36 Citations (Scopus)
    91 Downloads (Pure)


    This paper presents an optimized design method for the magnetic circuit of brushless doubly fed machines (BDFMs). The BDFM is an attractive electrical machine, particularly for wind power applications, as a replacement for doubly fed slip-ring generators. This study shows that the conventional design methods for the BDFM stator and rotor back iron can be modified, leading to a lighter and smaller machine. The proposed design concepts are supported by analytical methods, and their practicality is verified using two-dimensional finite-element modeling and analysis. Two BDFMs with frame sizes D180 and D400 are considered in this study.
    Original languageEnglish
    Pages (from-to)1611-1620
    Number of pages10
    JournalIEEE Transactions on Energy Conversion
    Issue number4
    Publication statusPublished - 2 Sept 2015

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    • Rotors
    • Iron
    • Stator windings
    • Saturation magnetization
    • Magnetic circuits,
    • Windings


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