Kabushiki Kaisha Yaskawa Denki

Naotake Yoshizawa

Kenji Watanabe

Toshiyuki Yamagishi

Kiyomi Inoue

Yoshiaki Kamei

Takaaki Shibuya

Takashi Nomiyama

A rotary electric machine includes a stator; and a rotor including an iron core, which has a tubular connecting portion surrounding a shaft and 10 magnetic pole portions integrally formed with the connecting portion corresponding to a pole number, and a plurality of permanent magnets arranged between the magnetic pole portions. The iron core includes axially-penetrated magnet accommodating air gaps formed between the magnetic pole portions at the radial outer side of the connecting portion, and the permanent magnets are installed in the respective magnet accommodating air gaps such that a radial outer surface of each of the permanent magnets makes close contact with an inner surface of each of the magnet accommodating air gaps and such that a gap exists between a radial inner surface of each of the permanent magnets and the connecting portion.

Rotary electric machine with tapered permanent magnet

The disclosure discloses a rotating electrical machine including a stator and a rotor. The rotor includes a cylindrical iron core that is fixed to a shaft and comprises a radial direction and an axial direction, a plurality of permanent magnets that is embedded in the iron core, a plurality of air gaps that are respectively provided in a portion on an inner side of the iron core in the radial direction, a wedge portion that is provided along the axial direction so as to protrude within the air gap, and a non-magnetic reinforcing member that is filled in the air gap.

Rotating electrical machine

Growing community of inventors

Kitakyushu, Japan

Naotake Yoshizawa