Invention Grant
- Patent Title: Rotary electric machine
- Patent Title (中): 旋转电机
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Application No.: US13861836Application Date: 2013-04-12
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Publication No.: US09236775B2Publication Date: 2016-01-12
- Inventor: Yuki Takahashi , Masahiro Seguchi
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2012-091241 20120412
- Main IPC: H02K21/12
- IPC: H02K21/12 ; H02K1/27 ; H02K21/14 ; H02K29/03

Abstract:
A rotary electric machine includes a stator and a rotor located in a rotatable manner relative to the stator via a gap. The stator includes a multi-phase stator winding that is held in a plurality of slots formed in the stator. The rotor includes at least one magnet section embedded therein so as to face the slots. The magnet section includes a plurality of axially laminated magnets with a skew angle which is an angle of a positional difference between the magnets. This skew angle θs is set so as to satisfy θs=kα/2 where α is a slot pitch which is an angle between the slots, and k is a coefficient set based on: an arc ratio θa being an angle covering an area in which magnetic flux radially flows from the magnetic section; and a slot factor S being a ratio of the slots relative to the magnet section.
Public/Granted literature
- US20130270958A1 ROTARY ELECTRIC MACHINE Public/Granted day:2013-10-17
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