A Light-Weight Rotor Design for Brushless Doubly Fed Machines

Salman Abdi Jalebi, Ehsan Abdi, Richard McMahon

Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

3 Citations (Scopus)
72 Downloads (Pure)


In this paper, a new optimized rotor design for Brushless Doubly Fed Machines (BDFMs) is proposed. The BDFM is considered as an attractive generator particularly for offshore wind power generation and also as a replacement for doubly fed slip ring induction generators. This is due to its higher reliability and lower maintenance reported in the literature. It is shown in this paper from the study of the magnetic field distribution in the rotor core that the conventional design of the BDFM rotor iron core can be modified, leading to a lighter machine. The proposed design method is supported by an analytical study and its practicality is validated using 2-D Finite Element (FE) analysis. A 250 kW experimental BDFM with frame size D400 is considered as the prototype machine.
Original languageEnglish
Title of host publicationXIII International Conference on Electrical Machines (ICEM'2018)
Number of pages6
ISBN (Electronic)978-1-5386-2477-7
ISBN (Print)978-1-5386-2478-4
Publication statusPublished - 25 Oct 2018
EventXIII International Conference on Electrical Machines - Alexandroupoli, Greece
Duration: 3 Sep 20186 Sep 2018


ConferenceXIII International Conference on Electrical Machines
Abbreviated titleICEM 2018
Internet address

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ISSN - 2381-4802


  • Brushless doubly fed machine (BDFM)
  • rotor back iron
  • finite element analysis (FEA)
  • magnetic circuit
  • iron saturation
  • magnetic flux density


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