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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/043081
Kind Code:
A rotor of an embodiment has a shaft and a rotor core fixed to the shaft. Multiple flux barriers are formed on the rotor core. Multiple bridge parts are formed on each of the flux barriers, and one or multiple barrier regions having a lower magnetic permeability than that of portions other than the flux barrier are formed between the multiple bridge parts. A permanent magnet is disposed in at least one of the barrier regions. The magnetization direction of the permanent magnet is aligned with a direction intersecting the longitudinal direction of the flux barrier. In addition, a value of (µ0×SMxBr)/(µre×tFB×wB) is in a range of 1.2 to 3.0 inclusive.

TAKEUCHI Katsutoku (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
MATSUSHITA Makoto (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
TAKAHASHI Norio (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
MISU Daisuke (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
HASEBE Toshio (1-1 Shibaura 1-chome, Minato-k, Tokyo 01, 〒1058001, JP)
Application Number:
Publication Date:
March 08, 2018
Filing Date:
August 09, 2017
Export Citation:
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KABUSHIKI KAISHA TOSHIBA (1-1 Shibaura 1-chome, Minato-ku Tokyo, 01, 〒1058001, JP)
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION (72-34, Horikawa-cho Saiwai-ku, Kawasaki-sh, Kanagawa 85, 〒2128585, JP)
International Classes:
H02K1/27; H02K1/22
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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