Examination to make eddy current loss density uniform in divided Nd-Fe-B magnets of a high torque density motor with axial-gap structure

Ayato Nihonyanagi; Masatsugu Takemoto; Satoshi Ogasawara; Koji Inoue

doi:10.1109/IFEEC.2015.7361606

Examination to make eddy current loss density uniform in divided Nd-Fe-B magnets of a high torque density motor with axial-gap structure

Ayato Nihonyanagi, Masatsugu Takemoto, Satoshi Ogasawara, Koji Inoue

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Citations (Scopus)

Abstract

An axial-gap motor with Nd-Fe-B magnets was examined by three-dimensional finite element analysis (3D-FEA) in order to achieve high torque density over 66.8 Nm/L under the constraint of a maximum current density of 12 A/mm2, and it was confirmed that the examined motor could satisfy these conditions. In this examination, suppressing eddy current loss occurring in these magnets by equally dividing a magnet constituting one pole toward radial direction was attempted. However, 3D-FEA results revealed that the eddy current loss density generated in each magnet which was equally divided was not uniform and had a large bias. So, this paper provides examination to make the eddy current loss density uniform in divided magnets by adjusting split width appropriately.

Original language	English
Title of host publication	2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479976577
DOIs	https://doi.org/10.1109/IFEEC.2015.7361606
Publication status	Published - Dec 18 2015
Externally published	Yes
Event	2nd IEEE International Future Energy Electronics Conference, IFEEC 2015 - Taipei, Taiwan, Province of China Duration: Nov 1 2015 → Nov 4 2015

Publication series

Name	2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015

Conference

Conference	2nd IEEE International Future Energy Electronics Conference, IFEEC 2015
Country/Territory	Taiwan, Province of China
City	Taipei
Period	11/1/15 → 11/4/15

ASJC Scopus subject areas

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/IFEEC.2015.7361606

Cite this

Nihonyanagi, A., Takemoto, M., Ogasawara, S., & Inoue, K. (2015). Examination to make eddy current loss density uniform in divided Nd-Fe-B magnets of a high torque density motor with axial-gap structure. In 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015 [7361606] (2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IFEEC.2015.7361606

Examination to make eddy current loss density uniform in divided Nd-Fe-B magnets of a high torque density motor with axial-gap structure. / Nihonyanagi, Ayato; Takemoto, Masatsugu; Ogasawara, Satoshi et al.
2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7361606 (2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Nihonyanagi, A, Takemoto, M, Ogasawara, S & Inoue, K 2015, Examination to make eddy current loss density uniform in divided Nd-Fe-B magnets of a high torque density motor with axial-gap structure. in 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015., 7361606, 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015, Institute of Electrical and Electronics Engineers Inc., 2nd IEEE International Future Energy Electronics Conference, IFEEC 2015, Taipei, Taiwan, Province of China, 11/1/15. https://doi.org/10.1109/IFEEC.2015.7361606

Nihonyanagi A, Takemoto M, Ogasawara S, Inoue K. Examination to make eddy current loss density uniform in divided Nd-Fe-B magnets of a high torque density motor with axial-gap structure. In 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7361606. (2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015). doi: 10.1109/IFEEC.2015.7361606

Nihonyanagi, Ayato ; Takemoto, Masatsugu ; Ogasawara, Satoshi et al. / Examination to make eddy current loss density uniform in divided Nd-Fe-B magnets of a high torque density motor with axial-gap structure. 2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. (2015 IEEE 2nd International Future Energy Electronics Conference, IFEEC 2015).

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abstract = "An axial-gap motor with Nd-Fe-B magnets was examined by three-dimensional finite element analysis (3D-FEA) in order to achieve high torque density over 66.8 Nm/L under the constraint of a maximum current density of 12 A/mm2, and it was confirmed that the examined motor could satisfy these conditions. In this examination, suppressing eddy current loss occurring in these magnets by equally dividing a magnet constituting one pole toward radial direction was attempted. However, 3D-FEA results revealed that the eddy current loss density generated in each magnet which was equally divided was not uniform and had a large bias. So, this paper provides examination to make the eddy current loss density uniform in divided magnets by adjusting split width appropriately.",

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Examination to make eddy current loss density uniform in divided Nd-Fe-B magnets of a high torque density motor with axial-gap structure

Abstract

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Conference

ASJC Scopus subject areas

UN SDGs

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