A,φ-Ω Method for 3-D Eddy Current Field Analysis
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摘要: 本文在分析了不同规范下三维涡流问题的场域方程、界面连续条件后指出:在涡流区采用矢量磁位A,标量电位φ及库仑规范.A=0,在非导电区采用标量磁位Ω的求解策略较为合理,并给出了这一方法(A,φ-Ω法)的全部场域方程、边界条件、界面连续条件和相应的泛函.Abstract: After the field equations and the continuous conditions beteen the interfaces for 3-D eddy current problems under various gauges were discussed, it was pointed out in this paper that using the vector magnetic potential A, electric scalar potential φ and Coulomb gauge A=0 in eddy current regions and using magnetic scalar potential Ω in the nonconducting regions are more suitable. All field equations, the boundary conditions, the continuous conditions between the interfaces and the corresponding variational principle corresponding with this method are also given.
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Key words:
- 3-D eddy current field /
- A,φ-Ω method /
- interface continuous conditions /
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[1] Proc.Conf.on the computation of Electromagnetic Fields(Graz.Austria,Aug.25~28,1987),also IEEE Trans.Mag.,24(1)(1988),13-578. [2] M.V.K.Chari,A.Konrad,M.A.Palmo and J.D.Angelo,Three dimensional vector potential analysis for machine field problem,IEEE Trans.Mag.,18(2)(1982),435-446. [3] C.R.I.Emson and J.Somkin,An optimal method for 3-D eddy currents,IEEE Trans.Mag.,19(6)(1983),2450-2462. [4] M.L.Brown,Calculation of 3 dimensional eddy currents at power frequencies,PIEE,129(1)(1982),46-53. [5] R.I.Emson and C.W.Trowbridge,Transient 3D eddy currents using modified magnetic vect or potentials and magnetic scalar potentials,IEEE Trans.Mag.,24(1)(1988),86-89.
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