3D coupled field‐circuit simulation of electromechanical converter dynamics

Abstract

An algorithm for simultaneous solution of equations describing transient 3D magnetic field coupled to the Kirchhoff’s equations and the equation of motion has been presented. The nonlinearity and anisotropy of the magnetic core have been taken into account. Numerical implementation of the algorithm is based on the finite element method. In order to solve the 3D problem a special iterative procedure, in which the 3D task is substituted with a sequence of 2D problems, has been proposed. The time‐stepping backward difference algorithm for the time‐discretization of the electric circuit equations has been applied. To determine the moving armature position, an implicit procedure, which is unconditionally stable has been proposed. For the sake of example, the calculations of dynamic operation of the E‐type electromagnetic actuator equipped with the shading coil have been performed.

Citation

Nowak, L. and Demenko, A. (1998), "3D coupled field‐circuit simulation of electromechanical converter dynamics", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 17 No. 4, pp. 439-447. https://doi.org/10.1108/03321649810210613