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:
Feb. 20, 2024
Filed:
Jan. 15, 2021
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Infrastructure Systems & Solutions Corporation, Kawasaki, JP;
Hiroaki Makino, Fuchu, JP;
Makoto Matsushita, Fuchu, JP;
Katsutoku Takeuchi, Kokubunji, JP;
Daisuke Misu, Yokohama, JP;
Fumiaki Ito, Fuchu, JP;
Masakatsu Matsubara, Mie, JP;
Mikio Takabatake, Tsurumi, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION, Kawasaki, JP;
Abstract
According to one embodiment, a first permanent magnet and a second permanent magnet are disposed in each magnetic pole of a rotor core. When angular coordinates of intersections of a flux line in a d-axial direction passing an outer end Aof the first permanent magnet, a flux line in the d-axial direction passing through an inner end Aof the first permanent magnet, a flux line in the d-axial direction passing an outer end Bof the second permanent magnet, a flux line in the d-axial direction passing an inner end Bof the second permanent magnet and a circumscribing circle of the rotor core are respectively defined as θ, θ, θand θ, the θ, θ, θand θsatisfy a formula (−34/p<(θ-θ)<22/p, −34/p<(θ−θ)<22/p).