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Magnetic field around an iron torus

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2 Author(s)
Gyimesi, I. ; Dept. of Electr. Eng., Toronto Univ., Ont., Canada ; Lavers, D.

The authors present a semianalytical solution of the magnetic field excited by an infinitely long current filament passing through the hole of an iron torus. This is the first 3-D analytical solution for a bounded multiply connected iron region. The solution can be of use when testing 3-D magnetostatic software. The solution is expanded by toroidal functions which are calculated by efficient algorithms. Computed results in the x-Y plane are given for an excitation of 1 A and torus relative permeability of 1000

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Magnetics, IEEE Transactions on  (Volume:28 ,  Issue: 5 )