Improving the Saliency of a High Speed SynRel Rotor by using High Strength Martensitic Sleeve

R. M. Ram Kumar, Gaurang Vakil, Antonino La Rocca, David Gerada, Chris Gerada, B. G. Fernandes

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

High strength magnetic steel laminations are the invariable choice to achieve the power density demands of high speed electric machines required in the automotive industry. However, the cost competitive automobile market, favours the use of conventional materials. Consequently, in this paper, a high strength martensitic sleeve rotor configuration is identified as an ideal choice to maximize the use of conventional materials in a high speed synchronous reluctance (SynRel) machine. A 3.5 kW, 60 krpm high speed SynRel machine is designed for an electric assist turbocharger (EAT) to disclose the benefits of sleeve rotor configuration. The performance of the sleeve rotor is on par and superior to a SynRel machines employing high and low strength laminations respectively. Finally, a multiphysics optimization is performed to ascertain the superiority of sleeve rotor SynRel configuration. Based on this, the sleeve rotor produces 4.5% and 46.7% more torque than the SynRel machines using high and low strength laminations with conventional rotor configurations. Additionally, this is achieved with nearly 90% by volume of conventional rotor lamination.

Original languageEnglish
Title of host publication2021 International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728156811
DOIs
Publication statusPublished - 21 Jan 2021
Externally publishedYes
Event2021 International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2021 - Virtual, Hyderabad, India
Duration: 21 Jan 202123 Jan 2021

Publication series

Name2021 International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2021

Conference

Conference2021 International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2021
Country/TerritoryIndia
CityVirtual, Hyderabad
Period21/01/2123/01/21

Keywords

  • High speed
  • sleeve rotor
  • synchronous reluctance machine
  • torque density

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Automotive Engineering
  • Electrical and Electronic Engineering
  • Transportation

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