Development of High Power‐Density Motors for Electric Axles Using Nd‐Based Bonded Magnets

ABSTRACT In recent years, a demand for smaller traction motors with higher power has arisen. This study focused on high‐speed rotation for miniaturization and developed a prototype motor using Nd‐based bonded magnets. It had a maximum rotational speed of 34,000 rpm, which is twice that of existing 5...

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Bibliographic Details
Published inElectrical engineering in Japan Vol. 218; no. 1
Main Authors Naruse, Kenya, Kim, Choongsik, Kayano, Masahiro, Watarai, Aki, Mitarai, Hironari, Nakamura, Kenji
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc 01.03.2025
Subjects
bonded magnet
high‐speed motor
IPMSM
Magnets
Motors
Neodymium
power‐weight ratio (PWR)
Prototypes
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Summary:ABSTRACT In recent years, a demand for smaller traction motors with higher power has arisen. This study focused on high‐speed rotation for miniaturization and developed a prototype motor using Nd‐based bonded magnets. It had a maximum rotational speed of 34,000 rpm, which is twice that of existing 50 kW‐class motors. The motor achieved the desired performance in the test in combination with a reducer. As a result, the weight of the prototype motor was reduced by 54%, and a power density of 6.7 kW/kg was achieved.
Bibliography:10.1541/ieejias.144.732
Translated from Volume 144 Number 10, pages 732–738, DOI
(Denki Gakkai Ronbunshi D).
of
IEEJ Transactions on Industry Applications
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0424-7760
1520-6416
DOI:10.1002/eej.23494