Sanyo Electric Co., Ltd.

Shigemi Koiso

Kazuhiko Arai

Keijiro Igarashi

Masaaki Takezawa

Toshihito Yanashima

Yoshitomo Nakayama

Eiichi Murata

Noboru Onodera

Kazuhiro Enomoto

Masanori Yamashita

A synchronous induction motor features improved assemblability of a rotor, significantly reduced production cost, and improved operation performance of the motor. A plurality of die-cast secondary conductors is provided around a rotor yoke constituting the rotor of the synchronous induction motor. End rings are die-cast integrally with the secondary conductors on the peripheral portions of both end surfaces of the rotor yoke. Permanent magnets are inserted into slots formed such that they penetrate the rotor yoke. The openings of both ends of the slots are closed by a pair of end surface members formed of a non-magnetic constituent. One of the end surface members is secured to the rotor yoke by one of the end rings when the secondary conductors and the end rings are formed. The other end surface member is secured to the rotor yoke by a fixture.

Synchronous induction motor and manufacturing method and drive unit for the same, and hermetic electric compressor

A sealed motor compressor in which a motor running efficiency is largely enhanced with a single-phase bipolar constitution, an electromotive element is fixed to a sealed container, and formed of a stator provided with a stator winding, and a rotor which rotates in the stator, and the rotor is formed of a squirrel-cage secondary conductor disposed in a peripheral portion of a rotor yoke, and a permanent magnet is embedded in the rotor yoke.

Sealed motor compressor

A synchronous induction motor realizing a great reluctance torque by concentrating a magnetomotive force generated by a rotor provided with a permanent magnet having a two-pole structure, and having a high efficiency. The synchronous induction motor has a stator provided with a stator winding, a rotor rotating within the stator, a cage-type secondary electric conductor provided in a peripheral portion of a rotor yoke portion constituting the rotor, and a permanent magnet inserted into the rotor yoke portion and having a two-pole structure, and the magnetomotive force generated by one pole of the rotor is set to a value equal to or less than 10% of a peak value in a predetermined range near an electrical angle of 0 degrees or 180 degrees.

Synchronous induction motor

Growing community of inventors

Ota, Japan

Shigemi Koiso