Invention Grant
- Patent Title: Electric machine having rotor with slanted permanent magnets
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Application No.: US14899005Application Date: 2013-06-20
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Publication No.: US10199889B2Publication Date: 2019-02-05
- Inventor: Zbigniew Piech , Jagadeesh Tangudu , Richard A. Himmelmann
- Applicant: Otis Elevator Company
- Applicant Address: US CT Farmington
- Assignee: Otis Elevator Company
- Current Assignee: Otis Elevator Company
- Current Assignee Address: US CT Farmington
- Agency: O'Shea Getz P.C.
- International Application: PCT/US2013/046847 WO 20130620
- International Announcement: WO2014/204469 WO 20141224
- Main IPC: H02K1/27
- IPC: H02K1/27 ; H02K16/04 ; H02K1/30

Abstract:
An electric machine including a rotor and an annularly-shaped first stator is provided. The rotor includes an annularly-shaped rotor body and permanent magnets positionally-fixed relative to the rotor body. The first stator includes circumferentially-spaced stator poles. The rotor and the first stator are concentric and axially-aligned relative to an axial centerline of the electric machine. Each of the permanent magnets creates a magnetic dipole. Each magnetic dipole extends along a dipole axis that passes through the respective permanent magnet. Each dipole axis extends in a first plane. The centerline of the electric machine extends in a second plane that is at least substantially perpendicular to the first plane. Each of the permanent magnets is positioned so that a magnet angle that is between 15° and 75° is defined between the respective dipole axis and a radial axis that extends between the respective permanent magnet and the centerline.
Public/Granted literature
- US20160126790A1 ELECTRIC MACHINE HAVING ROTOR WITH SLANTED PERMANENT MAGNETS Public/Granted day:2016-05-05
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