Design aspects of high-speed high-power-density laminated-rotor induction machines

David Gerada, Abdeslam Mebarki, Neil L. Brown, Keith J. Bradley, Chris Gerada

Research output: Journal PublicationArticlepeer-review

126 Citations (Scopus)


This paper deals with the considerations associated with the design of high-speed high-power-density laminated-rotor induction machines (IMs). The considerations discussed are described by the design of an actual 10-kW machine, which runs at speeds of up to 75 kr/min with a rated power density of 28 MW/m3 for an electrically assisted turbocharger. Using a developed multidomain design environment which puts equal weight on the electromagnetic, mechanical, and thermal aspects, the rotor split ratio, electric and magnetic loadings, lamination material, rotor-bar material, and rotor-bar shape are identified as important and sensitive parameters in the design of high-speed IMs. Finally, general guidelines for designing high-speed high-power-density IMs are presented.

Original languageEnglish
Article number5661832
Pages (from-to)4039-4047
Number of pages9
JournalIEEE Transactions on Industrial Electronics
Issue number9
Publication statusPublished - Sept 2011


  • High speed
  • induction machine (IM)
  • laminated rotor
  • materials
  • mechanical modeling
  • split ratio
  • thermal modeling

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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