COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 38 Issue 3

Guest editorial

Daniel Baumgarten

Single voxel approach for Lorentz force evaluation

Eva-Maria Dölker, Bojana Petković, Reinhard Schmidt, Marek Ziolkowski, Hartmut Brauer, Jens Haueisen

Lorentz force evaluation is a non-destructive evaluation method for conducting specimens. The movement of a specimen relative to a permanent magnet leads to Lorentz forces that…

Sensitivity studies and optimization of arrangements of optically pumped magnetometers in simulated magnetoencephalography

Roland Eichardt, Daniel Strohmeier, Alexander Hunold, René Machts, Jens Haueisen, Gregor Oelsner, Christian B. Schmidt, Volkmar Schultze, Ronny Stolz, Uwe Graichen

The purpose of this paper is to present a simulation study using a model of a new optically pumped magnetometer sensor for application in the field of magnetoencephalography. The…

Sensitivity analysis using Sobol indices for the thermal modelling of an electrical machine for sizing by optimization

Mathias Le Guyadec, Laurent Gerbaud, Emmanuel Vinot, Benoit Delinchant

The thermal modelling of an electrical machine is difficult because the thermal behavior depends on its geometry, the used materials and its manufacturing process. In the paper…

Improvements of bat algorithm using crossover technique and hybridization with Nelder-Mead simplex method

Bourahla Kheireddine, Belli Zoubida, Hacib Tarik

This study aims to improve the bat algorithm (BA) performance for solving optimization problems in electrical engineering.

Dot sensitivity analysis of ferromagnetic materials for topology optimization in an axi-symmetric magnetostatic system

SeungGeon Hong, Kang Hyouk Lee, Il Han Park

The purpose of this paper is to propose dot sensitivity analysis of ferromagnetic materials for topology optimization in an axi-symmetric magnetostatic system.

Homogenization of multi-turn coil with elliptic cross-section using complex permeability

Shogo Fujita, Hajime Igarashi

The tensor complex permeability of a multi-turn coil with elliptic cross-section is analytically expressed. In field analysis, a multi-turn coil can be modeled by the uniform…

Multistage topology optimization of induction heating apparatus in time domain electromagnetic field with magnetic nonlinearity

Hiroshi Masuda, Yoshifumi Okamoto, Shinji Wakao

The purpose of this paper is to solve efficiently the topology optimization (TO) in time domain problem with magnetic nonlinearity requiring a large-scale finite element mesh. As…

An implementation of adjoint-based topology optimization in magnetostatics: Application to design hall-effect thrusters

Rtimi Youness, Frederic Messine

In magnetostatics, topology optimization (TO) addresses the problem of finding the distributions of both current densities and ferromagnetic materials to comply with fixed…

Application of Whitney elements for the reconstruction of electric arc current density in low-voltage circuit breakers

Jinlong Dong, Luca Di Rienzo, Olivier Chadebec, Jianhua Wang

This paper aims to present the mathematical formulations of a magnetic inverse problem for the electric arc current density reconstruction in a simplified arc chamber of a…

Improved version of teaching learning-based optimization algorithm using random local search: TLBO-RLS

Bourahla Kheireddine, Belli Zoubida, Hacib Tarik

This paper aims to deal with the development of a newly improved version of teaching learning based optimization (TLBO) algorithm.