Iterative procedure for 3D eddy current transient problem
An algorithm for a simultaneous solving of equations of the 3D electromagnetic field and equations of electric circuits of an electromagnetic device with a solid conducting part is elaborated. The A-T formulation is applied. The governing differential equations issue from the independent Ampere's and Faraday's laws. Therefore, the potentials A and T are described uniquely. The magnetic field A is described in terms of magnetic vector potential T is computed only in the conducting region. In each time step, in order to solve the 3D problem,a special iterative procedure is proposed. The 3D task is substituted with a sequence of 2D problems. Decomposition of the task consists of (a) apparent separation of the vector potential components and (b) space division into layers. Transients in a linear induction motor after the application of the supply voltages are investigated.
eddy currents algorithms electromagnetics