Comparison study of two topologies double-fed brushless machine with fractional slot windings for low-speed applications

Hui Juan Liu, Yue Hao, Cai Chen, Weinong Fu

Research output: Journal article publicationJournal articleAcademic researchpeer-review


The performances of two topologies of low-speed double-fed brushless machine (DFBM) with fractional slot windings are quantitatively compared and analyzed using two-dimensional (2-D) finite element method (FEM). To fairly compare the torque capability and power efficiency of different DFBMs, the investigated DFBMs have the same outer diameter, the same axial stack length and the same iron core materials, and some comparison rules are presented. In order to maximize the torque density, several important structure parameters are optimized. The results of this paper reveal the torque density levels and power density levels of two kinds of DFBMs.
Original languageEnglish
Pages (from-to)3299-3308
Number of pages10
JournalEnergy Education Science and Technology Part A: Energy Science and Research
Issue number5
Publication statusPublished - 1 Jan 2014


  • Double-fed brushless machine (DFBM)
  • FEM
  • Fractional slot windings
  • Power density
  • Radial magnetic field modulation
  • Torque density

ASJC Scopus subject areas

  • Energy(all)

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