Reduced basis finite element modelling of electrical machines with multi-conductor windings

Antti Lehikoinen, Antero Arkkio, Anouar Belahcen

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

2 Citations (Scopus)


Finite element analysis of electrical machines with multi-conductor windings can be computationally costly. This paper proposes a solution to this problem, using a reduced basis approach. The field-circuit problem is first solved in a single slot only, with a set of different boundary conditions. These pre-computed solutions are then used as shape functions to approximate the solution in all slots of the full problem. A polynomial interpolation method is also proposed for coupling the slot domains with the rest of the geometry, even if the geometries or meshes do not fully conform on the boundary. The method is evaluated on several test problems. According to the simulations, accurate solutions are obtained. Furthermore, a speed-up factor of 30 is observed when analysing a six-slot phase belt of a high-speed induction machine.

Original languageEnglish
Title of host publicationProceedings of the 2016 22nd International Conference on Electrical Machines, ICEM 2016
Number of pages7
ISBN (Electronic)9781509025381
Publication statusPublished - 2 Nov 2016
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Electrical Machines - Lausanne, Switzerland
Duration: 4 Sep 20167 Sep 2016
Conference number: 22


ConferenceInternational Conference on Electrical Machines
Abbreviated titleICEM
Internet address


  • eddy currents
  • Finite element analysis
  • proximity effects
  • reduced order systems


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