- Patent Title: Rotating electric machine with various ratios for permanent magnets and holes, rotor salient and magnetic poles, rotor laminations, air gaps and stator tooth thickness
-
Application No.: US14101391Application Date: 2013-12-10
-
Publication No.: US10734853B2Publication Date: 2020-08-04
- Inventor: Makoto Taniguchi , Hiroki Tomizawa
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Nixon & Vanderhye PC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@1368912f com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@6a2b2b77
- Main IPC: H02K1/27
- IPC: H02K1/27 ; H02K29/03

Abstract:
A rotating electric machine is equipped with a consequent-pole type rotor that includes a magnetic pole having a permanent magnet buried therein and a soft magnetic material pole that interposes two magnetic poles. The thickness of the permanent magnet and a circumferential width of the soft magnetic material pole have a relationship that prevents a spread of magnetic flux distribution in the circumferential direction within a gap between the soft magnetic material pole and a stator. As a result, a magnetic flux density difference in the circumferential direction is prevented, which enables a reduction of cogging torque based on an effective reduction of low-frequency space order components that originate from components other than a main component.
Public/Granted literature
- US20140159534A1 ROTATING ELECTRIC MACHINE Public/Granted day:2014-06-12
Information query