start-ver=1.4
cd-journal=joma
no-vol=60
cd-vols=
no-issue=3
article-no=
start-page=3934
end-page=3949
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=20240301
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Designing and Prototyping an Axial-Flux Machine Using Ferrite PM and Round Wire for Traction Applications: Comparison With a Radial-Flux Machine Using Nd-Fe-B PM and Rectangular Wire
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=This paper proposes a novel axial-flux permanent magnet machine (AFPM) employing ferrite permanent magnets (PMs) and round copper wire. The proposed AFPM adopts a novel rotor structure and uses tooth-tips with a suitable trapezoidal shape. These structures compensate for the low magnetomotive force of the round copper wire and ferrite PMs, achieving high performance at low cost. Additionally, compared with an off-the-shelf radial-flux permanent magnet machine (RFPM) using Nd-sintered PMs and rectangular copper wire, the proposed AFPM achieves the same output power and higher efficiency, despite using ferrite PMs and the round copper wire. Finally, a prototype of the proposed AFPM was manufactured and evaluated experimentally. The prototype achieved a high efficiency of over 95% across a wide operating area while maintaining required maximum torque, suggesting its potential for traction applications.
en-copyright=
kn-copyright=

en-aut-name=TsunataRen
en-aut-sei=Tsunata
en-aut-mei=Ren
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=IzumiyaKosuke
en-aut-sei=Izumiya
en-aut-mei=Kosuke
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=TakemotoMasatsugu
en-aut-sei=Takemoto
en-aut-mei=Masatsugu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=ImaiJun
en-aut-sei=Imai
en-aut-mei=Jun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=SaitoTatsuya
en-aut-sei=Saito
en-aut-mei=Tatsuya
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=UenoTomoyuki
en-aut-sei=Ueno
en-aut-mei=Tomoyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

affil-num=1
en-affil=Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=2
en-affil=Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=3
en-affil=Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=4
en-affil=Division of Industrial Innovation Sciences Graduate School of Natural Science and Technology, Okayama University
kn-affil=

affil-num=5
en-affil=Sumitomo Electric Industries Ltd.
kn-affil=

affil-num=6
en-affil=Sumitomo Electric Industries Ltd.
kn-affil=
en-keyword=Axial gap motor
kn-keyword=Axial gap motor
en-keyword=axial-flux machine
kn-keyword=axial-flux machine
en-keyword=carbon fiber rotor
kn-keyword=carbon fiber rotor
en-keyword=carbon fiber-reinforced plastic
kn-keyword=carbon fiber-reinforced plastic
en-keyword=city commuter
kn-keyword=city commuter
en-keyword=ferrite magnet
kn-keyword=ferrite magnet
en-keyword=flat copper wire
kn-keyword=flat copper wire
en-keyword=high circumferential speed
kn-keyword=high circumferential speed
en-keyword=radial-flux machine
kn-keyword=radial-flux machine
END