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Magnetic field analysis of polar anisotropic plastic magnet and application for dc brushless motor
Author(s) -
Kitamura Shingo,
Ishihara Yoshiyuki,
Todaka Toshiyuki,
Inoue Yoshiaki
Publication year - 1999
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/(sici)1520-6416(199905)127:3<53::aid-eej6>3.0.co;2-n
Subject(s) - magnet , polar , anisotropy , materials science , magnetic field , condensed matter physics , magnetic flux , finite element method , magnetic anisotropy , rotor (electric) , mechanics , nuclear magnetic resonance , physics , mechanical engineering , optics , magnetization , engineering , thermodynamics , quantum mechanics , astronomy
In this paper we propose an analytical method of DCBLM with polar anisotropic plastic rotor magnets. The orientation of the polar anisotropic plastic magnet is different for each part. In our method, the magnetic flux distribution of the injection mold for polar anisotropic plastic magnets is analyzed by FEM first. Next, the orientation is determined from the magnetic flux distribution. Finally, based on the latter, the nonlinear dynamic magnetic field of DCBLM is analyzed. The analytical value was in good agreement with the experimental value of magnetic flux distribution in the magnet unit and the characteristic of DCBLM. © 1999 Scripta Technica, Electr Eng Jpn, 127(3): 53–61, 1999