Invention Grant
- Patent Title: Electric machine with Q-offset grooved interior-magnet rotor and vehicle
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Application No.: US15730129Application Date: 2017-10-11
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Publication No.: US10177615B2Publication Date: 2019-01-08
- Inventor: Yasuyuki Saito , Tsuyoshi Goto , Kenichi Nakayama , Noriaki Hino , Shinji Sugimoto
- Applicant: Hitachi Automotive Systems, Ltd.
- Applicant Address: JP Hitachinaka-shi
- Assignee: Hitachi Automotive Systems, Ltd.
- Current Assignee: Hitachi Automotive Systems, Ltd.
- Current Assignee Address: JP Hitachinaka-shi
- Agency: Crowell & Moring LLP
- Priority: JP2008-266952 20081016
- Main IPC: H02K1/27
- IPC: H02K1/27 ; B60L11/14 ; B60L15/02 ; H02P27/06 ; H02K7/00 ; B60L11/12 ; B60L15/20 ; H02K1/24 ; B60K1/02 ; B60K6/26 ; B60K6/445 ; H02K29/03 ; B60L15/00

Abstract:
A rotating electric machine includes a stator having a stator coil and a rotor provided rotatably around a specific rotation axis with respect to the stator. The rotor includes a plurality of magnets, a plurality of magnetically-assisted salient pole members provided between poles of any adjacent two magnets from among the plurality of magnets, and a magnetoresistance variation unit provided in the magnetically-assisted salient pole member along an axial direction of the rotation axis at a position offset in a circumferential direction of the rotation axis from a q-axis passing through a salient pole center of the magnetically-assisted salient pole member. The amount of offset of the magnetoresistance variation unit from the q-axis varies depending on positions of the magnetically-assisted salient pole members so that torque fluctuations cancel each other when power is applied.
Public/Granted literature
- US20180048198A1 Electric Machine with Q-Offset Grooved Interior-Magnet Rotor and Vehicle Public/Granted day:2018-02-15
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