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The low-frequency performance of H-φ and T-Ω methods using edge elements for 3D eddy current problems

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2 Author(s)
Webb, J.P. ; Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada ; Forghani, B.

Using edge elements, it is possible to solve directly for the vector magnetic field in the conducting material of a time-harmonic eddy-current problem, and for a magnetic scalar potential in the nonconducting regions. This is the H-φ method. Edge elements also allow the magnetic field, H, to be split into the gradient of a scalar potential, and another, rotational part. This is the T-Ω method. The H-φ and T-Ω methods provide the same answers. However, the matrix equation obtained from T-Ω is better conditioned at low frequencies, and can be solved more efficiently

Published in:

Magnetics, IEEE Transactions on  (Volume:29 ,  Issue: 6 )

Date of Publication:

Nov 1993

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