Comparison of Parallel-in-Space-and-Time Finite-Element Methods for Magnetic Field Analysis of Electric Machines

This article investigates the effectiveness of two parallel-in-space-and-time (PinST) finite-element methods (FEMs) in magnetic field analyses of practical electric machines. A combination of an ordinary domain decomposition method (DDM) with a parallel time-periodic FEM is compared with a PinST FEM based on the DDM combined with a parallel time-periodic explicit-error-correction method. To clarify and compare the performances of the two methods in terms of their parallel efficiencies, numerical results of an interior permanent magnet synchronous motor are presented.