Homogenization and eddy current loss approximation of soft magnetic composite material for electrical machines

Shruti Singh, Joonas Vesa, Johan Gyselinck, Paavo Rasilo, Yves Mollet

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

This paper investigates the soft magnetic composite (SMC) material consisting of irregular grains with induced eddy currents using finite element analysis (FEA). SMC material is made up of iron grains separated by insulation gap. The geometry of the material has been determined using an algorithm based approach and an image based approach.The effective reluctivity has been determined using two homogenization techniques. The first homogenization technique makes use of an energy formulation. The eddy current effects are evaluated taking into consideration the fill factor of the 2-D SMC material.A low frequency approximation is realized for the homogenized material. In the second technique, non-linear properties are determined using the time-stepping technique. A method has been proposed in FEA for directly including an analytical eddy current loss formula for rotating electrical machines with SMC material cores. The eddy current loss and torque have been determined for the radial flux permanent magnet synchronous machine (PMSM) having an SMC stator core and the results are then compared with the laminated stator core machine.

Original languageEnglish
Title of host publicationThe 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)
Pages1024-1029
Number of pages6
ISBN (Electronic)978-1-83953-542-0
DOIs
Publication statusPublished - 2020
Publication typeA4 Article in conference proceedings
EventInternational Conference on Power Electronics, Machines and Drives -
Duration: 15 Dec 202017 Dec 2020

Conference

ConferenceInternational Conference on Power Electronics, Machines and Drives
Period15/12/2017/12/20

Keywords

  • Complex permeability
  • Finite element analysis
  • Homogenization
  • Soft magnetic composite material

Publication forum classification

  • Publication forum level 0

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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