Electric Vehicle Traction Motor with a Reluctance Outer Rotor and a Modular Stator with AC Concentrated Toroidal Windings and PM or DC Wave Winding Excitation

Oluwaseun A. Badewa, Ali Mohammadi, Dan M. Ionel, Somasundaram Essakiappan, Madhav Manjrekar

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

1 Scopus citations

Abstract

This paper proposes a novel electric motor concept using stator-embedded phase windings and can employ permanent magnet (PM) or Direct Current (DC) excitation. Concentrated toroidal coils are used for the phase windings and uniquely placed in separate slots while high flux intensification is achieved through a spoke-type arrangement of PMs or by using a DC excitation winding placed circumferentially around the stator. Torque production mechanism conforms with analytical concepts of air-gap flux density distributions using PM or DC excitation. High electrical loading can be achieved using DC excitation resulting in high power density as well as an extended power range through flux weakening by excitation current within thermal constraints. A comparison between this novel design and existing PM design previously analyzed and prototyped is carried out. Parametric studies as well as large scale multi-objective optimizations are used to find geometrical designs with best performance in terms of torque, total losses, torque ripple as well as power factor. Performance metrics such as power density, and machine goodness are used to compare this novel design with a ferrite design. The proposed novel design considers a 10′′ outer rotor diameter with a torque of 550Nm at a base speed of 3,000rpm.

Original languageEnglish
Title of host publication2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
Pages3845-3850
Number of pages6
ISBN (Electronic)9798350316445
DOIs
StatePublished - 2023
Event2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 - Nashville, United States
Duration: Oct 29 2023Nov 2 2023

Publication series

Name2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

Conference

Conference2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
Country/TerritoryUnited States
CityNashville
Period10/29/2311/2/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

  • Electric machines
  • PM motor
  • concentrated windings
  • finite element analysis
  • flux switching motor
  • hybrid stator excitation
  • magnet-free
  • synchronous motor

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Electric Vehicle Traction Motor with a Reluctance Outer Rotor and a Modular Stator with AC Concentrated Toroidal Windings and PM or DC Wave Winding Excitation'. Together they form a unique fingerprint.

Cite this