Title :
Electromagnetic design optimization of a powder aligning fixture for a compression-molded anisotropic NdFeB ring magnet
Author :
Kinsey, David J. ; Jewell, Geraint W. ; Howe, David ; Williams, Andrew J. ; Lillywhite, Sarah J. ; Harris, I. Rex
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, UK
fDate :
5/1/2004 12:00:00 AM
Abstract :
The paper describes the design optimization of an electromagnet for aligning anisotropic NdFeB powder during the compression molding of a two-pole ring magnet. The optimization method makes extensive use of both two- and three-dimensional magnetostatic finite-element analysis in order to demonstrate the influence of various design features on the performance of the electromagnet and the limitations of two-dimensional analysis. Measurements on a prototype powder-aligning system validate the optimization method.
Keywords :
boron alloys; compression moulding; electromagnets; finite element analysis; fixtures; iron alloys; magnetic anisotropy; neodymium alloys; optimisation; permanent magnets; NdFeB; anisotropic powder; anisotropic ring magnet; compression molding; compression-molded ring magnet; electromagnet performance; electromagnetic design optimization; magnetostatic finite-element analysis; neodymium alloys; permanent magnets; powder aligning fixture; powder-aligning system; powdered magnetic materials; two-dimensional analysis; two-pole ring magnet; Anisotropic magnetoresistance; Design optimization; Electromagnetic analysis; Electromagnets; Fixtures; Magnetic anisotropy; Magnetostatics; Optimization methods; Perpendicular magnetic anisotropy; Powders; Finite-element methods; neodymium alloys; permanent magnets; powdered magnetic materials;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.826625
