Finite Element Computation of Magnetic Vibration Sources in 100 kW Two Fractional-Slot Interior Permanent Magnet Machines for Ship

The design of an interior permanent magnet (IPM) machine, in particular, its pole and slot combination, determines the nature of its magnetic forces, which influences not only the torque but also acoustic noise and vibration characteristics. Vibrations can shorten bearing life and are an especially...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2012-02, Vol.48 (2), p.867-870
Main Authors: Lee, Sun-Kwon, Kang, Gyu-Hong, Hur, Jin
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Finite element analysis
Force
Forging
fractional slot
Harmonic analysis
IPM
Materials science
Other topics in materials science
Permanent magnet motors
Physics
radial force
Saturation magnetization
Torque
vibration
Vibrations
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Summary:The design of an interior permanent magnet (IPM) machine, in particular, its pole and slot combination, determines the nature of its magnetic forces, which influences not only the torque but also acoustic noise and vibration characteristics. Vibrations can shorten bearing life and are an especially important parameter in marine applications, which have strict regulations such as on electromagnetic compatibility. In this study, two-dimensional(2D) finite element analysis (FEA) was used to model magnetic vibration sources in two 100-kW marine fractional-slot IPM machines with different pole and slot combinations (8 pole-12 slot and 10 pole-12 slot). The magnetic forces were calculated according to rotor position, current phase angle, and load. The results are validated by experiments.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2011.2176323