Modeling of Spherical Magnet Arrays Using the Magnetic Charge Model

Author

Van Ninhuijs, B. ; Motoasca, T.E. ; Gysen, B.L.J. ; Lomonova, E.A.

Author_Institution

Eindhoven Univ. of Technol., Eindhoven, Netherlands

Volume

49

Issue

7

fYear

2013

fDate

41456

Firstpage

4109

Lastpage

4112

Abstract

This paper presents an analytical method for evaluating the magnetic flux density produced by spherical permanent magnet arrays used in spherical actuators. To investigate the performances of magnetic arrays, analytical models are used due to their lower computational time compared to 3-D finite element analysis. This paper presents an analytical model for the calculation of the magnetic field produced by a spherical permanent magnet array using magnetic charge modeling. To obtain the total magnetic field solution, first the magnetic field produced by a single spherical tile is considered. By means of superposition, the magnetic field produced by the array is obtained. Two magnet array topologies are modeled and the analytical results are validated using finite element analysis.

Keywords

finite element analysis; magnetic actuators; magnetic fields; magnetic flux; permanent magnets; topology; 3D finite element analysis; analytical models; low computational time; magnet array topologies; magnetic array performances; magnetic charge model; magnetic charge modeling; magnetic field; magnetic flux density; single spherical tile; spherical actuators; spherical permanent magnet array modelling; total magnetic field solution; Actuators; Analytical models; Magnetic analysis; Magnetic circuits; Permanent magnets; Analytical modeling; magnetic charge modeling; spherical permanent magnet array;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2012.2235411

Filename

6387601