Invention Application
- Patent Title: ELECTRIC MACHINE HAVING ROTOR WITH SLANTED PERMANENT MAGNETS
- Patent Title (中): 具有带有永久磁铁的转子的电机
-
Application No.: US14899005Application Date: 2013-06-20
-
Publication No.: US20160126790A1Publication Date: 2016-05-05
- Inventor: Zbigniew Piech , Jagadeesh Tangudu , Richard A. Himmelmann
- Applicant: Otis Elevator Company
- International Application: PCT/US13/46847 WO 20130620
- Main IPC: H02K1/27
- IPC: H02K1/27 ; H02K16/04

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
- US10199889B2 Electric machine having rotor with slanted permanent magnets Public/Granted day:2019-02-05
Information query