Torque production improvement of a five phase fractional-slot PM machine under faulty operation

• Hajer Rebai ^[1] ; Imen Abdennadher ^[1] ; Ahmed Masmoudi ^[1]
  1. [1] University of Sfax

     University of Sfax

     Túnez

     
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 34, Nº 6 (Special Issue: Ecological vehicles and renewable energies), 2015, págs. 1758-1770
• Idioma: inglés
• Enlaces
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• Resumen

  • Purpose – The purpose of this paper is to deal with several approach to recover the torque production capability of a five phase double-layer fractional-slot PM machine under faulty operation. The considered fault is an open-circuit coil in a given phase.

    Design/methodology/approach – In a first step, the mean futures, such as the phase back-EMFs and the electromagnetic torque, are computed by finite element analysis under healthy operation, and are taken as references. Then, they are investigated, under a faulty coil, for different approaches to recover the torque production capability.

    Findings – A comparison of the potentialities of the torque recovery approaches has clearly highlight the superiority of the approach consisting in the re-adjustment of the current initial phases, in an attempt to equilibrate the resulting air gap MMF.

    Research limitations/implications – This work should be extended by an experimental validation of the predicted results regarding the back-EMFs and the electromagnetic torque.

    Practical implications – The investigation of the considered five phase fractional-slot PM machine under faulty operation should be extended to several faulty scenarios in order to fulfill the requirements of many applications such as the propulsion systems.

    Originality/value – The paper proposes different approaches to recover the torque production capability of a five phase fractional-slot PM machine under faulty operation.