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:
Aug. 14, 2001
Filed:
Sep. 28, 1999
Kazuto Sakai, Tokyo, JP;
Masanori Arata, Tokyo, JP;
Mikio Takabatake, Tokyo, JP;
Yoshio Hashidate, Tokyo, JP;
Ryoichi Kurosawa, Tokyo, JP;
Yosuke Nakazawa, Tokyo, JP;
Tadashi Tokumasu, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A reluctance type rotating machine includes a stator,having armature windings,arranged on an inner periphery of the stator,a rotor,having a magnetic unevenness in the circumferential direction and a plurality of permanent magnets,arranged for negating the armature windings' flux passing between adjoining poles. Each magnet,is magnetized in a direction different from a direction to facilitate the rotor's magnetization. A magnetic portion,is provided between the pole and the interpole of the rotor,Owing to the provision of the magnetic portion,when the armature windings are not excited, more than 30% of the permanent magnets' flux is distributed in the rotor,Similarly, when the machine is loaded, the permanent magnets' interlinkage flux is more than 10% of composite interlinkage flux composed of armature current and the permanent magnets.