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Dive into the research topics where Kiyomi Kawamura is active.

Publication


Featured researches published by Kiyomi Kawamura.


Journal of Applied Physics | 2007

Preparation method of rare earth bonded magnets with continuously controlled anisotropy directions

Fumitoshi Yamashita; Kiyomi Kawamura; Yukihiro Okada; Hiroshi Murakami; Masaki Ogushi; Masaki Nakano; H. Fukunaga

An advanced preparation method was carried out to obtain a highly dense radially anisotropic rare earth bonded magnet with continuously controlled anisotropy directions. An 8-pole/12-slot surface permanent magnet synchronous motor with a rotor 40.9mm in outer diameter, which comprised the above-mentioned magnet, was prepared, and it was found that the cogging torque decreases by approximately 20% and the back emf increases by 134% compared with those of a conventional isotropic Nd2Fe14B one with the same dimensions.


Archive | 2007

Radial Anisotropic Magnet Manufacturing Method, Permanent Magnet Motor Using Radial Anisotropic Magnet, and Iron Core-Equipped Permanent Magnet Motor

Fumitoshi Yamashita; Hiroshi Murakami; Kiyomi Kawamura


Archive | 2009

MANUFACTURING METHOD OF RARE EARTH-IRON RING MAGNET WITH CONTINUOUS ORIENTATION CONTROLLED ANISOTROPY

Fumitoshi Yamashita; Kiyomi Kawamura; Yukihiro Okada; Hiroshi Murakami


Journal of Magnetism and Magnetic Materials | 2007

Composite bonded magnets with controlled anisotropy directions prepared by viscous deformation technique

Fumitoshi Yamashita; Kiyomi Kawamura; Yukihiro Okada; Hiroshi Murakami; Masaki Ogushi; Masaki Nakano; H. Fukunaga


Archive | 2010

FAN MOTOR AND BLOWER INCLUDING THE SAME MOTOR

Kiyomi Kawamura; Hu Li; Yuichi Yoshikawa; Hiroshi Murakami; Yasushi Kato


Archive | 2008

Anisotropic permanent magnet motor

Kiyomi Kawamura; Fumitoshi Yamashita; Hiroshi Murakami


Archive | 2009

Interior permanent magnet rotor, electric motor using the same and electric device

Kiyomi Kawamura; Takashi Ogawa; Hiroshi Murakami; Yuichi Yoshikawa; Yasuyuki Yokouchi


Archive | 2007

Permanent magnet rotor and motor using the same

Fumitoshi Yamashita; Hiroshi Murakami; Yukihiro Okada; Kiyomi Kawamura


Archive | 2014

Permanent-magnet-embedded electric motor and method for manufacturing same

Kiyomi Kawamura; Hiroaki Kawasaki; Yuichi Yoshikawa; Yasushi Kato; Haruhiko Kado; Noritaka Aso


Archive | 2011

MOTOR AND ELECTRICAL APPARATUS HOUSING SAME

Hu Li; Yuichi Yoshikawa; Hiroshi Murakami; Haruhiko Kado; Kiyomi Kawamura

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