Multiphysics Evaluation of High-Speed SynRM and PMa-SynRM Rare-Earth-Less Permanent Magnets for Automotive Traction

Authors

  • Gabriel B. da Silveira Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
  • Igor P. Wiltuschnig Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
  • Aurélio T Salton Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
  • Letícia G. Tobias dos Santos Mercosul Industria de motores S.A.
  • Cristiano de A. Soares Mercosul Industria de motores S.A.
  • Paulo R. Eckert Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil

Keywords:

Multiphysics Evaluation, High-speed, Liquid Cooling, PMa-SynRM, SynRM

Abstract

This paper presents a multiphysics evaluation of a Synchronous Reluctance Motor (SynRM) and a Ferrite Permanent Magnet-Assisted Synchronous Reluctance Motor (PMa-SynRM), both featuring a liquid-cooled housing. Initially, the study discusses the effects of the PM assistance, assessing its impact on flux linkages and inductances within the d-q reference frame. An experimental test is proposed to determine the rated current density that can be used for the stator windings with the current cooling system. Additionally, the paper analyzes the performance of both motors using a maximum torque per ampere (MTPA) control strategy and the experimentally determined rated current density. Finally, the mechanical reliability of the rotor is verified through numerical simulations of tension and radial expansion to ensure reliable operation from a base speed of 6,000 rpm up to 12,000 rpm.

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Published

2024-10-18

Issue

Vol. 4 No. 1 (2024): CBA2024

Section

Articles