NDLI: Design method and magnetic field analysis of axial-magnetized permanent magnet micromotor

Content Provider	Springer Nature Link
Author	Yang, Jiewei Wu, Yihui Jia, Hongguang Zhang, Ping Wang, Shurong
Copyright Year	2007
Abstract	To investigate the impact of size on its performance in designing an axial-magnetized permanent magnet micromotor, the finite element method is adopted to simulate the magnetic field of the dual rotor motor, and the flux density wave form distributed in the airgap is obtained. The influence of the external dimensions, pole numbers and magnet thicknesses of the rotor, and the airgap distances on the flux density, are analyzed and analytical results are given. With the increase of the airgap distance, the flux density under more poles reduces more quickly than under fewer poles. With the increase of the magnet thickness, the flux density is a rising curve, and after the magnet thickness attains a certain point, the flux density is almost a constant. While reducing the diameter of the rotor, the decrease of the flux density slows down as magnet thickness is reduced. To avoid having a seriously distorted waveform, the distance between inner and outer radii of the rotor must be larger than 1.5 millimeter. Results of the magnetic field analysis can guide a microminiaturization of the motor. Moreover, the results are analyzed theoretically and the simulated values are almost consistent with the experimental values.
Starting Page	318
Ending Page	322
Page Count	5
File Format	PDF
ISSN	16733479
Journal	Frontiers of Mechanical Engineering
Volume Number	2
Issue Number	3
e-ISSN	16733592
Language	English
Publisher	Higher Education Press
Publisher Date	2007-01-01
Publisher Institution	Chinese Universities
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	permanent magnet micromotor axial-magnetizing flux density magnetic field analysis Nd-Fe-B Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanical Engineering

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