Time- and Frequency-Domain Steady-State Solutions of Nonlinear Motional Eddy Currents Problems

• Main Author: Léo A.J. Friedrich
• Format: Article
• Language: English
• Published: MDPI AG 2021-01-01
• Series: J
• Subjects: harmonic balance method; frequency domain; nonlinear characteristics; eddy currents; permanent magnet; isogeometric analysis
• Online Access: https://www.mdpi.com/2571-8800/4/1/2

This paper presents a comparison of different time- and frequency-domain solvers for the steady-state simulation of the eddy current phenomena, due to the motion of a permanent magnet array, occurring in the soft-magnetic stator core of electrical machines that exhibits nonlinear material characteristics. Three different dynamic solvers are implemented in the framework of the isogeometric analysis, namely the traditional time-stepping backward-Euler technique, the space-time Galerkin approach, and the harmonic balance method, which operates in the frequency domain. Two-dimensional electrical machine benchmarks, consisting of both slotless and slotted stator core, are considered to establish the accuracy, convergence, and computational efficiency of the presented solvers.