Parallel Time-stepped Analysis of Induction Machines With Newton-Raphson Iteration and Domain Decomposition

摘要

This paper presents an approach for the efficient solution of multi-slice two-dimensional eddy-current finite-element analysis of skewed induction machines. The Newton-Raphson method is applied to linearize the nonlinear field equations for each slice and domain decomposition is then utilized to reduce the field equations on to the circuit equations. The proposed algorithm reduces the computational cost of multi-slice simulation, when compared to the case without domain decomposition. In order to reduce further the elapsed time during simulations, the algorithm may be executed in parallel with little additional overhead. Simulation results for serial and parallel computation are presented.