COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 38 Issue 5

Guest editorial

Design concepts of low-frequency electromagnetic devices based on a data-driven approach

This paper aims to propose a data-driven approach to determine the design guidelines for low-frequency electromagnetic devices.

Usage of FEM for synthesis of dead-beat current controller for permanent magnet synchronous motor

Predictive controllers and permanent magnet synchronous motors (PMSMs) got more attention over the past decades thanks to their applicable features. This paper aims to propose and…

Analysis of penalty parameters for interior penalty Galerkin methods

The purpose of this paper is to analyse the influence of penalty parameters for an interior penalty Galerkin method, namely, the symmetric interior penalty Galerkin method.

Dynamic hysteresis modeling for soft magnetic composites based on isotropic vector play model and Cauer ladder network

This paper aims to propose an effective modeling method of dynamic hysteresis properties for soft magnetic composite (SMC) core using an equivalent circuit representation. Because…

Exploiting the T(x) function in fast hysteresis models for transient circuit simulations

The purpose of this paper is to investigate an alternative to established hysteresis models.

Modelling the penetration of magnetic flux in thin superconducting films with shell transformations

Finite element (FE) models are considered for the penetration of magnetic flux in type-II superconductor films. A shell transformation allows boundary conditions to be applied at…

Model order reducibility of nonlinear electro-quasistatic problems

This paper aims to develop an automated domain decomposition strategy that is based on the presence of nonlinear field grading material, in the context of model order reduction…

The impact of human age on the amount of absorbed energy from mobile phone

The purpose of this paper is to determine the impact of human age on the distribution of electric field and absorbed energy that originates from a mobile phone.

Low-power electrical impedance tomography spectroscopy

This paper aims to present an approach based on electrical impedance tomography spectroscopy (EITS) for the determination of water and ice fraction in low-power applications such…

Anderson acceleration for electromagnetic nonlinear problems

The purpose of this paper is to implement the Anderson acceleration for different formulations of eletromagnetic nonlinear problems and analyze the method efficiency and…

Parallel finite-element method using domain decomposition and Parareal for transient motor starting analysis

This paper aims to propose a parallel-in-space-time finite-element method (FEM) for transient motor starting analyses. Although the domain decomposition method (DDM) is suitable…

Statistical solution of inverse problems using a state reduction

The application of statistical inversion theory provides a powerful approach for solving estimation problems including the ability for uncertainty quantification (UQ) by means of…

Accelerating parameter estimation in Doyle–Fuller–Newman model for lithium-ion batteries

This paper aims to solve the parameter identification problem to estimate the parameters in electrochemical models of the lithium-ion battery.

A novel variant of the H-Φ field formulation for magnetostatic and eddy current problems

The paper presents a new variant of the H-Φ field formulation for solving 3-D magnetostatic and frequency domain eddy current problems. The suggested formulation uses the vector…

Simulating induction heating processes using harmonic balance FEM

The purpose of this paper is to examine a solution strategy for coupled nonlinear magnetic-thermal problems and apply it to the heating process of a thin moving steel sheet…

Magnetic coupling of mechanical modes in MRI systems

The purpose of this paper is to investigate magneto-mechanical coupling occurring in magnetic resonance imaging (MRI) systems. The authors study influence of the strength of the…

A non-smooth Newton method for the solution of magnetostatic field problems with hysteresis

The use of gradient-based methods in finite element schemes can be prevented by undefined derivatives, which are encountered when modeling hysteresis in constitutive material…

Temperature-dependent hysteresis model for soft magnetic materials

To understand the behavior of the magnetization processes in ferromagnetic materials in function of temperature, a temperature-dependent hysteresis model is necessary. This study…

Finite-element analysis of turbine generator using homogenization method taking account of magnetic anisotropy

This paper aims to propose a homogenization method considering magnetic anisotropy for a magnetic field analysis of a turbine generator. To verify the validity of the proposed…

Enhancement of convergence characteristics of Newton-Raphson method with line search for nonlinear eddy current analysis based on time-periodic FEM

The paper aims to improve convergence characteristics of the Newton–Raphson (NR) method applied to time-periodic finite element method using various line searches, as…

Performance of Krylov subspace method with SOR preconditioner supported by Eisenstat’s technique for linear system derived from time-periodic FEM

This paper aims to present the affinity of BiCGStab and BiCGStab2 with successive over-relaxation (SOR) preconditioner supported by Eisenstat’s technique for a linear system…

Worst-case analysis of electronic circuits based on an analytic forward solver approach

The purpose of this paper is to evaluate the worst-case behavior of a given electronic circuit by varying the values of the components in a meaningful way in order not to exceed…

A MSFEM to simulate the eddy current problem in laminated iron cores in 3D

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…

Simulating metallic contamination in permanent magnets used in magnetic sensors

The purpose of this paper is to provide a model for simulating contamination by ferromagnetic particles in sensors that use permanent magnets. This topic is especially important…

Comparison of different vector Preisach models for the simulation of ferromagnetic materials

The numerical computation of magnetization processes in moving and rotating assemblies requires the usage of vector hysteresis models. A commonly used model is the so-called…

Experimental technique for high-frequency conductivity measurement

The purpose of this study is to introduce a novel method for the measurement of electromagnetic material parameters.