Invention Grant
- Patent Title: Rotor having segments with rotationally offset magnetic poles
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Application No.: US16978946Application Date: 2019-09-18
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Publication No.: US11424668B2Publication Date: 2022-08-23
- Inventor: Maximilian Pilz , Benjamin Schlaepfer , Juntao Zhu
- Applicant: Bayerische Motoren Werke Aktiengesellschaft
- Applicant Address: DE Munich
- Assignee: Bayerische Motoren Werke Aktiengesellschaft
- Current Assignee: Bayerische Motoren Werke Aktiengesellschaft
- Current Assignee Address: DE Munich
- Agency: Crowell & Moring LLP
- Priority: DE102018126570.0 20181025
- International Application: PCT/EP2019/074971 WO 20190918
- International Announcement: WO2020/083571 WO 20200430
- Main IPC: H02K29/03
- IPC: H02K29/03 ; H02K1/274

Abstract:
A rotor of an electric machine has multiple segments arranged adjacent to one another in an axial direction, wherein each of the segments has multiple magnetic poles which are arranged coaxially with respect to an axis of rotation of the electric machine and so as to be evenly distributed in a circumferential direction of the segment. The segments are arranged in the circumferential direction such that the magnetic poles of adjacent segments which are adjacent to one or more middle segments are rotationally offset in a first angular direction in relation to the magnetic poles of the one or more middle segments. The magnetic poles of segments which adjoin the adjacent segments toward the outside are rotationally offset in a second angular direction which is opposite to the first angular direction.
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