Modifications to PM-assisted Synchronous Reluctance Machine to Achieve Rare-Earth Free Heavy-duty Traction

M. Al-ani, A. Walker, G. Vakil, D. Gerada, C. Gerada, K. Paciura

Research output: Journal PublicationArticlepeer-review

Abstract

Automotive applications require electrical machines designed for high torque density, wide speed range and low cost. NdFeB magnets can achieve the high torque density and wide speed range, however, they have a high cost. Therefore, this paper explores the capability of rare-earth-free design through a PM-assisted synchronous reluctance motor (PM-SynRel). A PM-SynRel design with NdFeB has been used in this study where the NdFeB magnets have been replaced with ferrite magnets. Then, several modifications on the rotor have been made to ensure mechanical safety. Thermal analysis has been conducted last to evaluate the temperatures in the different machine parts to avoid exceeding the required limits. Finally, a prototype has been made and tested to validate the simulation results.

Original languageEnglish
Pages (from-to)1
Number of pages1
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • automotive
  • ferrite
  • Magnetic flux leakage
  • Magnetic separation
  • Magnetomechanical effects
  • Optimization
  • PM-assisted synchronous reluctance
  • Rare-earth free
  • Rotors
  • Safety
  • Torque

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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