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Boundary element analysis method for 3-D transient eddy current problems based on the second order vector potential formulation

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4 Author(s)
Shao, K.R. ; Dept. of Electr. Eng., Huazhong Univ. of Sci. & Tech., Wuhan, China ; Zhou, K.D. ; Li, L.R. ; Lavers, J.D.

The authors consider a boundary-element method (BEM) for 3-D transient eddy current problems formulated in terms of the second-order vector potential (SOVP). Indirect boundary integral equations are derived using the time-dependent fundamental solution and fictitious source densities. In the numerical implementation, a time-stepping convolution approach is adopted to eliminate the need for volume discretization and domain integration. Numerical results of a benchmark problem demonstrate the validity and accuracy of the technique. The proposed scheme, compared with an alternative volume-based recurring initial condition approach, not only provides considerable reduction in the manpower requirements for modeling, but also permits a more precise solution, especially for 3-D problems

Published in:

Magnetics, IEEE Transactions on  (Volume:29 ,  Issue: 2 )

Date of Publication:

Mar 1993

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