The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2020
Filed:
Apr. 03, 2019
Toshiba Industrial Products and Systems Corporation, Kawasaki-shi, JP;
Toshiba Infrastructure Systems & Solutions Corporation, Kawasaki-shi, JP;
Kazuhiro Toda, Mie-gun, JP;
Takashi Araki, Mie-gun, JP;
Masaaki Matsumoto, Mie-gun, JP;
Katsutoku Takeuchi, Kokubunji, JP;
Makoto Matsushita, Fuchu, JP;
Toshio Hasebe, Hachioji, JP;
Toshiba Industrial Products and Systems Corporation, Kawasaki-shi, JP;
Toshiba Infrastructure Systems & Solutions Corporation, Kawasaki-shi, JP;
Abstract
A synchronous reluctance type rotary electric machine of an embodiment includes, a rotor core, a plurality of conductor bars, short-circuit rings, a stator core, and multiphase armature windings. The rotor core includes multi-layered hollow parts having a convex shape toward a side radially inward formed for each pole in cross section, and a bridge formed between each of the hollow parts and an outer circumferential surface thereof. The plurality of conductor bars are disposed in the respective hollow parts. The short-circuit rings connect the plurality of conductor bars together. Then, in all of the hollow parts of a second layer and subsequent layers other than the hollow part of a first layer which is at a position farthest from the rotation axis of the rotor core, the conductor bars are disposed at both end portions thereof close to the bridge at a predetermined distance from the bridge.