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:
Jul. 25, 2023
Filed:
Feb. 23, 2021
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2022.01); H02K 1/276 (2022.01);
U.S. Cl.
CPC ...
H02K 1/276 (2013.01); H02K 2213/03 (2013.01);
Abstract
In an IPM motor according to one aspect of the present disclosure, in a magnet structure installed in a magnet hole, a first soft magnetic body is located outside a first permanent magnet in a radial direction. Since the first soft magnetic body has a higher electrical resistivity than the electrical resistivity of a rotor core, a situation where an eddy current occurs in the first soft magnetic body is suppressed. In the IPM motor, a deterioration in efficiency caused by an eddy current loss is suppressed, so that the efficiency is improved.