Invention Grant
- Patent Title: Variable magnetomotive force rotary electric machine and control device for variable magnetomotive force rotary electric machine
- Patent Title (中): 可变磁动力旋转电机和可变磁动力旋转电机的控制装置
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Application No.: US14408974Application Date: 2012-06-26
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Publication No.: US09577484B2Publication Date: 2017-02-21
- Inventor: Takashi Kato , Robert Lorenz , Natee Limsuwan
- Applicant: Takashi Kato , Robert Lorenz , Natee Limsuwan
- Applicant Address: JP Yokohama US WI Madison
- Assignee: Nissan Motor Co., Ltd.,Wisconsin Alumni Research Foundation
- Current Assignee: Nissan Motor Co., Ltd.,Wisconsin Alumni Research Foundation
- Current Assignee Address: JP Yokohama US WI Madison
- Agency: Global IP Counselors, LLP
- International Application: PCT/US2012/044257 WO 20120626
- International Announcement: WO2014/003729 WO 20140103
- Main IPC: H02K1/27
- IPC: H02K1/27 ; H02P21/14 ; H02P21/00

Abstract:
A rotary electric machine includes a stator and a rotor. The rotor has at least one permanent magnet arranged in a d-axis magnetic path. The rotor includes a magnetic gap part located between the permanent magnet arranged in the d-axis magnetic path of one pole and an adjacent magnet with a different polarity, such that a d-axis magnetic flux forms a d-axis bypass passing through an area other than the permanent magnet. The d-axis bypass provides a magnetic resistance in a d-axis direction that is set below a magnetic resistance in a q-axis direction that is orthogonal to the d-axis resistance.
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