Invention Grant
- Patent Title: Permanent magnet machine and rotor therefor
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Application No.: US17378932Application Date: 2021-07-19
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Publication No.: US11742734B2Publication Date: 2023-08-29
- Inventor: William E. Martin , Robert F. McElveen, Jr. , Nicolas W. Frank
- Applicant: ABB Schweiz AG
- Applicant Address: CH Baden
- Assignee: ABB Schweiz AG
- Current Assignee: ABB Schweiz AG
- Current Assignee Address: CH Baden
- Agency: Leydig, Voit & Mayer, Ltd.
- Main IPC: H02K1/276
- IPC: H02K1/276 ; H02K1/27 ; H02K21/16 ; H02K21/04

Abstract:
An electric machine includes a stator and a rotor. The rotor includes stacked laminations forming a rotor core. The rotor rotates relative to the stator about a central axis. The rotor core has an outer diameter. Each lamination includes a plurality of magnet slots. Each magnet slot includes a ferrite permanent magnet located therein, adjacent pairs of the ferrite permanent magnets defining a number of poles. Each of the laminations includes a plurality of non-circular rotor bar apertures spaced about the central axis of the rotor and disposed adjacent to and radially inward of the rotor outer diameter. A non-cylindrical rotor bar is disposed in each respective of the plurality of rotor bar apertures. The rotor bars are formed of a conductive material, wherein at least some of the plurality of rotor bars collectively form a rotor bar cage.
Public/Granted literature
- US20230018320A1 Permanent Magnet Machine and Rotor Therefor Public/Granted day:2023-01-19
Information query
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