Invention Grant
- Patent Title: Permanent magnet machine with different pole arc angles
- Patent Title (中): 永磁电机具有不同的极弧角度
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Application No.: US14010208Application Date: 2013-08-26
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Publication No.: US09035522B2Publication Date: 2015-05-19
- Inventor: Feng Liang , Wei Wu , Michael W. Degner , Franco Leonardi
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: Brooks Kushman P.C.
- Agent David B. Kelley
- Main IPC: H02K21/12
- IPC: H02K21/12 ; H02K1/27 ; H02K29/03 ; B60L11/12 ; B60L11/14
Abstract:
An internal permanent magnet machine has multiple rotor sections, each section having multiple rotor laminations. Permanent magnets are placed asymmetrically in lamination openings to attenuate oscillations in torque caused by harmonic components of magnetic flux. Asymmetry is achieved by placing adjacent permanent magnets or magnet sets on the rotor periphery with different rotor magnetic pole arc angles.
Public/Granted literature
- US20130342043A1 PERMANENT MAGNET MACHINE WITH DIFFERENT POLE ARC ANGLES Public/Granted day:2013-12-26
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