@article{8722595,
  abstract     = {{This article compares the performance of an existing three-phase synchronous reluctance machine (SynRM) with an identical machine that is upgraded to a five-phase machine. Two different methods are possible to convert the existing three-phase machine to a five-phase one with minimum cost. In the first method, a five-phase SynRM (SynRM 1) is obtained by replacing the existing stator by another one that has an integer number of slots per pole, i.e., a multiple of five. In the second method, a five-phase SynRM (SynRM 2) is obtained by rewinding the existing stator with a special type of winding. This is because the slot number of the existing stators is not a multiple of five. The novelty of the article is that two five-phase SynRMs are compared with the original three phase reference machine in terms of torque and torque ripple, in healthy and fault conditions. At rated condition and optimal current angle, SynRM 1 performs better than SynRM 2 in terms of rated torque: SynRM 1 and 2 have 11.8% and 6.6% higher torque than the three-phase machine. But, SynRM 1 has 25% more torque ripple than the three-phase reference machine, while SynRM 2 has 17% lower torque ripple. At faulty case, SynRM 1 and 2 work at 74% and 79% of the healthy rated torque of the three-phase SynRM, while the three-phase SynRM works at only 43% with a very huge torque ripple. Finally, experimental measurements are obtained to validate the theoretical work.}},
  author       = {{Basem Tawfiq Albassioni, Kotb and Ibrahim, Mohamed and Elkholy, Elwy and Sergeant, Peter}},
  issn         = {{0093-9994}},
  journal      = {{IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS}},
  keywords     = {{Stator windings,Windings,Torque,Rotors,Torque measurement,Geometry,Finite element analysis,FEM,refurbishing,rewound multiphase,synchronous reluctance motor (synrm),winding factor,PERMANENT-MAGNET MACHINES,TORQUE-RIPPLE,HARMONIC COMPENSATION,INDUCTION-MOTOR,DESIGN,OPTIMIZATION}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{6007--6022}},
  title        = {{Comparative analysis of refurbishing methods of three-phase synchronous reluctance machines to five-phase with minimum cost}},
  url          = {{http://doi.org/10.1109/tia.2021.3117485}},
  volume       = {{57}},
  year         = {{2021}},
}

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