TY  - JOUR
AB  - Purpose The simulation of eddy currents in laminated iron cores by the finite element method (FEM) is of great interest in the design of electrical devices. Modeling each laminate by finite elements leads to extremely large nonlinear systems of equations impossible to solve with present computer resources reasonably. The purpose of this study is to show that the multiscale finite element method (MSFEM) overcomes this difficulty.Design/methodology/approach A new MSFEM approach for eddy currents of laminated nonlinear iron cores in three dimensions based on the magnetic vector potential is presented. How to construct the MSFEM approach in principal is shown. The MSFEM with the Biot–Savart field in the frequency domain, a higher-order approach, the time stepping method and with the harmonic balance method are introduced and studied.Findings Various simulations demonstrate the feasibility, efficiency and versatility of the new MSFEM.Originality/value The novel MSFEM solves true three-dimensional eddy current problems in laminated iron cores taking into account of the edge effect.
VL  - 38
IS  - 5
SN  - 0332-1649
DO  - 10.1108/COMPEL-12-2018-0538
UR  - https://doi.org/10.1108/COMPEL-12-2018-0538
AU  - Hollaus Karl
PY  - 2019
Y1  - 2019/01/01
TI  - A MSFEM to simulate the eddy current problem in laminated iron cores in 3D
T2  - COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
PB  - Emerald Publishing Limited
SP  - 1667
EP  - 1682
Y2  - 2024/05/06
ER  -