Title :
Comparison of Harmonic and Magnetic Charge Model for Spherical Magnetic Structures With a Neumann Boundary
Author :
van Ninhuijs, B. ; Jansen, J.W. ; Gysen, B.L.J. ; Lomonova, E.A.
Author_Institution :
Dept. of Electr. Eng., Eindhoven Univ. of Technol., Eindhoven, Netherlands
Abstract :
This paper includes the Neumann boundary conditions in the magnetic charge modeling method for spherical magnetic structures. In the spherical coordinate system, the geometry and the magnetic properties of the imaged magnetic structure are obtained with the method of inversion. This method is applied to a spherical permanent magnet array, and the results are compared with the harmonic modeling and finite-element analysis. In addition to this validation, the modeling methods are compared on their limitations and accuracy.
Keywords :
finite element analysis; magnetic devices; permanent magnets; Neumann boundary; finite-element analysis; imaged magnetic structure; magnetic charge model; magnetic properties; spherical coordinate system; spherical magnetic structures; spherical permanent magnet array; Arrays; Computational modeling; Harmonic analysis; Magnetic resonance imaging; Magnetic separation; Numerical models; Permanent magnets; Magnetic charge model; Neumann boundary; Spherical harmonics; magnetic charge model; slotted spherical actuator; spherical harmonics; spherical imaging; spherical permanent magnet array;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2444591
