Invention Grant
- Patent Title: Rotating electrical machine
-
Application No.: US16866756Application Date: 2020-05-05
-
Publication No.: US11239714B2Publication Date: 2022-02-01
- Inventor: Nobuyuki Shimbo , Koji Mitake , Toshihiro Kuroshima
- Applicant: TDK Corporation
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Faegre Drinker Biddle & Reath LLP
- Priority: JPJP2019-094023 20190517
- Main IPC: H02K1/27
- IPC: H02K1/27 ; H02K15/03 ; H01F13/00 ; H01F1/22 ; H02K21/14

Abstract:
In an IPM motor, since a first portion which is a pressed powder compact made of soft magnetic powder and has a lower magnetic permeability and a lower saturation magnetic flux density than those of a main body portion made of a laminated steel sheet is replaced and disposed in the vicinity of an inner arc side portion of a right end portion of a permanent magnet, local demagnetization is prevented.
Information query