Air-Cooled Multi-Phase Dual-Winding In-Wheel Motor Integrated with Ultra Small SiC Module

Kan Akatsu, Satoshi Tanimoto

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

1 Citation (Scopus)

Abstract

This paper presents an air-cooled in-wheel motor integrated with an SiC inverter having high torque density, high gear ratio, and fault tolerant characteristics. Air-cooling is achieved using an integrated SiC power module, which utilizes a volume of only 5 cc for one phase, thus reducing the inverter loss. Additionally, a 5-phase permanent magnet synchronous motor with a dual winding structure is used to achieve a low current peak for the SiC module, and the dual winding structure can achieve the winding changeover technique to improve motor efficiency in the high-speed region. The motor is driven up to 20,000 min-1, and the in-wheel motor's gear ratio of 18:1 can generate an output of 1.2 kNm. The maximum output is 40 kW short term with a continuous output of 20 kW achieved by natural air-cooling in the wheel. The proposed design can achieve fault tolerance, an important attribute for the electric vehicle system. This product had been supported by a Japanese government project for 5 years from 2014 to 2018.

Original languageEnglish
Title of host publicationECCE 2020 - IEEE Energy Conversion Congress and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages41-46
Number of pages6
ISBN (Electronic)9781728158266
DOIs
Publication statusPublished - 2020 Oct 11
Event12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020 - Virtual, Detroit, United States
Duration: 2020 Oct 112020 Oct 15

Publication series

NameECCE 2020 - IEEE Energy Conversion Congress and Exposition

Conference

Conference12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020
Country/TerritoryUnited States
CityVirtual, Detroit
Period20/10/1120/10/15

Keywords

  • Magnetic spur gear
  • downsizing of motor system
  • flux modulation type magnetic gear
  • high speed motor system
  • multiple motors

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Optimization
  • Energy Engineering and Power Technology

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