Scalability and Key Tradeoffs of Variable Flux PM Machines for EV Traction Motor Systems

Apoorva Athavale, David Reigosa, Kan Akatsu, Kazuto Sakai, Robert D. Lorenz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Methodologies for the design and control of variable flux permanent magnet synchronous machines (VF-PMSMs) to meet electric vehicle traction requirements with significantly reduced driving cycle losses have been proposed recently. The effectiveness of the proposed methods was demonstrated by a systematic design based on finite element analysis (FEA) and experimental driving cycle loss evaluation of a full scale VF-PMSM prototype. In this paper, simplified analytical models are developed to estimate the properties and key performance metrics of VF-PMSMs across a range of power and are verified using FEA. Fundamental tradeoffs between the normalized high-speed power capability and the range of magnetization state (boldsymbol M boldsymbol S ) variation are identified. The relationship between boldsymbol M boldsymbol S variation range and driving cycle loss reduction is evaluated quantitatively across the design space. A detailed analysis of the scalability of VF-PMSMs including loss reduction capability and system cost (including active materials in the machine, inverter power electronics, and battery cost) is presented.

Original languageEnglish
Title of host publication2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2292-2299
Number of pages8
ISBN (Electronic)9781479973118
DOIs
Publication statusPublished - 2018 Dec 3
Event10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States
Duration: 2018 Sep 232018 Sep 27

Publication series

Name2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Other

Other10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
CountryUnited States
CityPortland
Period18/9/2318/9/27

Keywords

  • Driving cycle loss
  • Electric vehicle
  • Magnetization manipulation
  • PM machines
  • Scalability
  • System design
  • Variable flux

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Control and Optimization
  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems and Management

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  • Cite this

    Athavale, A., Reigosa, D., Akatsu, K., Sakai, K., & Lorenz, R. D. (2018). Scalability and Key Tradeoffs of Variable Flux PM Machines for EV Traction Motor Systems. In 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 (pp. 2292-2299). [8558007] (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2018.8558007