A High-Speed High-Power-Density Non-Heavy Rare-Earth Permanent Magnet Traction Motor

Tsarafidy Raminosoa, Randy Wiles, J. Cousineau, Kevin Bennion, Jon Wilkins

Research output: Contribution to conferencePaperpeer-review

12 Scopus Citations

Abstract

There has been a global push for higher torque density and lower cost traction motors. The use of non-heavy rare-earth (non-HRE) permanent magnet materials in traction motors are being investigated for the sustainability, profitability and affordability of electric vehicles and to broaden their adoption. A 20,000-rpm permanent magnet traction motor using non-HRE magnet materials is proposed. A dual three-phase winding configuration driven by a segmented dual three-phase drive is proposed to reduce the current ripple, and as a result, the DC Link capacitor, as well as to ease the voltage constraint at high speed and eliminate any risk of uncontrolled regeneration. Furthermore, the dual winding configuration enables a fault tolerant design which is useful for reliability. The paper presents comprehensive electromagnetic, thermal and mechanical designs and analyses using an integrated approach. The results have shown that the design is robust against demagnetization and confirmed its thermal and mechanical viability.

Original languageAmerican English
Pages61-67
Number of pages7
DOIs
StatePublished - 11 Oct 2020
Event12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020 - Virtual, Detroit, United States
Duration: 11 Oct 202015 Oct 2020

Conference

Conference12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020
Country/TerritoryUnited States
CityVirtual, Detroit
Period11/10/2015/10/20

Bibliographical note

See NREL/CP-5400-75994 for preprint

NREL Publication Number

  • NREL/CP-5400-78713

Keywords

  • electric vehicle
  • non-heavy rare-earth motors
  • traction motors

Fingerprint

Dive into the research topics of 'A High-Speed High-Power-Density Non-Heavy Rare-Earth Permanent Magnet Traction Motor'. Together they form a unique fingerprint.

Cite this