COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 29 Issue 6

Frequency‐domain homogenization for periodic electromagnetic structure

The purpose of this paper is to propose a general approach for the frequency‐domain homogenization of electromagnetic periodic structures. The method allows calculating…

Numerical dosimetry of currents induced in the human body by ELF magnetic fields

The classical ϕ‐a formulations for numerical dosimetry of currents induced by extremely low frequency magnetic fields requires that the source field is provided through a vector…

Extended 2D magnetic equivalent circuit method

The purpose of this paper is to devise a magnetic field modelling approach suitable for simulating the transient behaviour of a class of electromagnetic systems (particularly…

Fixed‐point method for solving non linear periodic eddy current problems with T, Φ‐Φ formulation

The purpose of the paper is to show the application of the fixed‐point method with the T, Φ‐Φ formulation to get the steady‐state solution of the quasi‐static Maxwell's equations…

PEEC antenna modeling of rectangular spiral inductors for RFID systems

The purpose of this paper is to offer a fast and accurate simulation method for printed spiral radio frequency identification coils and to extract the parameters of an equivalent…

An integral meshless‐based approach in electromagnetic scattering

The purpose of this paper is to solve the electromagnetic scattering problem through a new integral‐based approach that uses the moving least squares (MLS) meshless method to…

Hysteresis loss in vector Preisach models

The magnetic modeling of materials has been focused on computing magnetization and forces in devices. With increasing efforts to make energy efficient devices, attention must now…

A modified elliptic model of anisotropy in nonlinear magnetic materials

Grain‐oriented steel has a distinctly anisotropic and nonlinear behaviour. Only in rare cases is the magnetisation curve known for directions other than the principal ones. The…

A posteriori iron loss computation with a vector hysteresis model

The purpose of this paper is to find out how to model iron losses in electrical machines accurately and efficiently.

Energetic model of ferromagnetic hysteresis

The purpose of this paper is to present a model to describe the nonlinear and hysteretic properties of ferromagnetic materials.

Niching evolution strategy finding global and Pareto optimal solutions

The purpose of this paper is to extend a (μ/ρ, λ) evolution strategy to perform remarkably more globally and to detect as many solutions as possible close to the Pareto optimal…

A robust optimization based on adjoint variable method

The purpose of this paper is to present a new method to obtain robust solutions to electromagnetic optimization problems, solved with evolutional algorithms, which are insensitive…

Interlaced resolution scheme for the simultaneous analysis of brain electric activity and conductivity with combined EEG/MEG diagnostics

The purpose of this paper is to evaluate the performances of a resolution scheme able to follow the dynamics of brain tissue properties in combined ElectroEncefaloGraphic (EEG) �…

Convolution approach for analysis of magnetic forces in electrical machines

The purpose of this paper is to present a method for analyzing higher magnetic force harmonics in electrical machines based on electromagnetic finite element simulation.

A numerical evaluation of electromagnetic fields exposure on real human body models until 100 kHz

The purpose of this paper is to describe how numerical models of human body have been applied for the evaluation of current density induced by strong magnetic field, to verify the…

A novel circuit model of a proton exchange membrane fuel cell

The purpose of this paper is to simulate passive proton exchange membrane fuel cells (PEMFCs) for portable electronic devices by means of a non‐linear lumped circuit based on…

Evaluation of a quasi‐coaxial printed circuit board transformer

The purpose of this paper is to investigate the possibility of utilizing printed circuit board (pcb) technology to manufacture coaxial transformers and to increase the…

Finite‐element analysis of a shielded pulsed‐current induction heater: Experimental validation of a time‐domain thin‐shell approach

The aim of this paper is the experimental validation of an original time‐domain thin‐shell formulation. The numerical results of a three‐dimensional thin‐shell model are compared…

On Delaunay refinement for curved geometries

The purpose of this paper is to investigate the extension of Delaunay refinement algorithms to work directly with a curved geometry in arbitrary dimensional spaces, which is also…

A non‐destructive testing application solved with A‐χ geometric eddy‐current formulation

The purpose of this paper is to introduce a perturbation method for the A‐χ geometric formulation to solve eddy‐current problems and apply it to the feasibility design of a…

Virtual positioning and shaping of source fields for ECT of tubes

The purpose of this paper is to present a new approach to drive the excitation field sources in the eddy current testing (ECT) of tubular conductive structures.

Adaptation in coupled problems

The purpose of this paper is to address the formulation, implementation, and adaptation of closely coupled multi‐physics problems with h‐ and p‐adaptive finite element methods. A…

Experimental validation of a numerical multiphysics technique for electro‐thermo‐mechanical problem

The purpose of this paper is to present an electro‐thermo‐structural analysis based on the cell method (CM).

Comparison of pull‐in voltages in MEMS using 3D FEM and analytical approaches

Electrostatic microelectromechanical systems are characterized by the pull‐in instability, associated to a pull‐in voltage. A good design requires an accurate model of this…

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