Mitsubishi Electric Corporation

Yoshiki Maeda

Shinichi Yamaguchi

Masaya Harakawa

Kazumasa Ito

Masatsugu Nakano

Haruyuki Kometani

Kazuaki Ando

Koki Naka

Norihiro Achiwa

With regard to an end portion shape of a slit formed in a rotor core in which flux barriers are formed in a circumferential direction in an identical number to the number of poles by arranging one or more slits and core layers alternately in a radial direction, an end portion of a slit is shaped such that, when mis set as the number of slit end portions, nis set as a natural number no smaller than 1, &#x3b1; and &#x3b2; are set as numbers within a range of &#x2212;&#xbc; to &#xbc;, q is set as a natural number no smaller than 1, and Nis set as the number of slots, intervals &#x3b4;and &#x3b5;from a first slit end to an islit end of a slit wall on an identical circumferential direction side satisfy specific mathematical formulae.

Reluctance motor and manufacturing method for rotor core used in reluctance motor

A permanent magnet rotary electric machine includes: a stator in which a plurality of teeth and a plurality of slots are formed on an inner periphery of a cylindrical stator core, and a winding wire is wound around the teeth so as to be disposed in the slots; and a rotor disposed in a hollow portion of the stator with an air gap between the rotor and the stator. In the rotor, 2n or more (n is a natural number equal to or larger than 1) radial projections are provided on an outer periphery of a rotor core, and a ferrite magnet is disposed between adjacent projections. A radial height of the projection is less than a thickness of middle of the ferrite magnet.

Permanent magnet rotary electric machine

Growing community of inventors

Chiyoda-ku, Japan

Yoshiki Maeda