Fundamental analysis of a ferrite permanent magnet axial gap motor with coreless rotor structure

Kazuya Chiba; Shinji Chino; Masatsugu Takemoto; Satoshi Ogasawara

doi:10.1541/ieejjia.3.47

Fundamental analysis of a ferrite permanent magnet axial gap motor with coreless rotor structure

Kazuya Chiba, Shinji Chino, Masatsugu Takemoto, Satoshi Ogasawara

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Rare earth permanent magnets (PMs) with a large energy product are generally used in the traction motors of hybrid electric vehicles. However, developing rare-earth-free motors is necessary because of problems with rare earth materials, such as increasing prices and difficulty in their supply. This paper introduces such a rare-earth-free motor: a ferrite PM axial gap motor with a coreless rotor structure. The motor structure and the results of three-dimensional finite element analysis are described in detail.

Original language	English
Pages (from-to)	47-54
Number of pages	8
Journal	IEEJ Journal of Industry Applications
Volume	3
Issue number	1
DOIs	https://doi.org/10.1541/ieejjia.3.47
Publication status	Published - 2014
Externally published	Yes

Keywords

Axial gap motor
Coreless rotor structure
Hybrid electric vehicles
Rare-earth-free motors

ASJC Scopus subject areas

Automotive Engineering
Energy Engineering and Power Technology
Mechanical Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

Access to Document

10.1541/ieejjia.3.47

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AU - Chiba, Kazuya

AU - Chino, Shinji

AU - Takemoto, Masatsugu

AU - Ogasawara, Satoshi

PY - 2014

Y1 - 2014

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AB - Rare earth permanent magnets (PMs) with a large energy product are generally used in the traction motors of hybrid electric vehicles. However, developing rare-earth-free motors is necessary because of problems with rare earth materials, such as increasing prices and difficulty in their supply. This paper introduces such a rare-earth-free motor: a ferrite PM axial gap motor with a coreless rotor structure. The motor structure and the results of three-dimensional finite element analysis are described in detail.

KW - Axial gap motor

KW - Coreless rotor structure

KW - Hybrid electric vehicles

KW - Rare-earth-free motors

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