A Study of Unbalanced Magnetic Pull in Brushless Doubly Fed Machines

Salman Abdi Jalebi, Ehsan Abdi, Richard McMahon

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)
36 Downloads (Pure)


This paper studies the unbalanced magnetic pull in the brushless doubly fed machine (BDFM) caused by both static and dynamic rotor eccentricities. Several parallel winding designs for the two stator windings are proposed, and the practicality of such designs is discussed with respect to direct coupling between the stator windings and with rotor undesirable harmonic fields. Once practical parallel winding designs are established, their effects on reducing deflection as a result of static and dynamic eccentricities are shown and compared with series wound stator. This study has been carried out on a prototype D400 250-kW BDFM.
Original languageEnglish
Pages (from-to)1218-1227
Number of pages10
JournalIEEE Transactions on Energy Conversion
Issue number3
Publication statusPublished - Sep 2015

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  • Rotors,
  • Stator windings
  • Coils
  • Windings
  • Iron
  • Force


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