Analytical Modeling of a Novel Transverse Flux Machine for Direct Drive Wind Turbine Applications: Preprint

Eduard Muljadi, Iftekhar Hasan, Tausif Husain, Md Uddin, Yilmaz Sozer, Iqbal Husain

Research output: Contribution to conferencePaper


This paper presents a nonlinear analytical model of a novel double-sided flux concentrating Transverse Flux Machine (TFM) based on the Magnetic Equivalent Circuit (MEC) model. The analytical model uses a series-parallel combination of flux tubes to predict the flux paths through different parts of the machine including air gaps, permanent magnets, stator, and rotor. The two-dimensional MEC model approximates the complex three-dimensional flux paths of the TFM and includes the effects of magnetic saturation. The model is capable of adapting to any geometry that makes it a good alternative for evaluating prospective designs of TFM compared to finite element solvers that are numerically intensive and require more computation time. A single-phase, 1-kW, 400-rpm machine is analytically modeled, and its resulting flux distribution, no-load EMF, and torque are verified with finite element analysis. The results are found to be in agreement, with less than 5% error, while reducing the computation time by 25 times.
Original languageAmerican English
Number of pages10
StatePublished - 2015
EventIEEE Energy Conversion Congress and Exposition - Montreal, Canada
Duration: 20 Sep 201524 Sep 2015


ConferenceIEEE Energy Conversion Congress and Exposition
CityMontreal, Canada

NREL Publication Number

  • NREL/CP-5D00-64745


  • finite element analysis
  • flux concentrating
  • magnetic equivalent circuit
  • magnetic saturation
  • nonlinear
  • transverse flux machine


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