Asymmetrical stator geometry design for three-phase machines with distributed winding

Daniele de Gaetano, Giacomo Sala, Michele Degano, David Gerada, Chris Gerada

Research output: Contribution to conferencePaperpeer-review

Abstract

This work focuses in detail on the flux density distribution in three-phase distributed winding machines, showing how its asymmetries in the teeth and back iron can be evaluated, and eventually compensated for. In order to achieve uniform flux density distributions, an asymmetrical stator geometry is proposed. A new set of geometrical parameters has been defined to balance the flux densities in the stator, while maintaining the same slot geometry (i.e., current density and amount of copper) and iron volume. The comparison, between a classical geometry and the proposed asymmetrical one, is carried out with the results showing the differences on the stator flux densities and the resulting torque performance. The new concept of asymmetrical design is validated for a surface mounted permanent magnet (SPM) machine as a case study. The outcomes of this work highlight the potential benefits of the presented solution with respect to the core saturation.

Original languageEnglish
Pages497-502
Number of pages6
DOIs
Publication statusPublished - 2020
Externally publishedYes
Event10th International Conference on Power Electronics, Machines and Drives, PEMD 2020 - Virtual, Online
Duration: 15 Dec 202017 Dec 2020

Conference

Conference10th International Conference on Power Electronics, Machines and Drives, PEMD 2020
CityVirtual, Online
Period15/12/2017/12/20

Keywords

  • Analytical models
  • Asymmetric stator design
  • Design methodology
  • Magnetic flux density
  • Permanent magnet machine

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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