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Modelling of magnetic and electric circuits (EPNC 2016)

Modelling of magnetic and electric circuits (EPNC 2016)

It is a great pleasure to introduce this E-Book of COMPEL with selected extended papers presented originally at the 24th Symposium on Electromagnetic Phenomena in Nonlinear Circuits (EPNC 2016) held from 28th June to 1st July 2016 in Helsinki, Finland. The 24th EPNC Symposium was organized by Aalto University, School of Electrical Engineering (Finland), Polish Academy of Science and Polish Society for Theoretical and Applied Electrical Engineering – Poznan Section. Professor Anouar Belahcen from Aalto University was Chairman of the Organizing Committee.

The first Symposium on Electromagnetic Phenomena in Nonlinear Circuits took place in Poznan, Poland, in November of 1972. The first 11 conferences were local meetings, although speakers from other countries also participated. The last 13 conferences were international events with proceedings published in English. Initially selected papers from EPNC conferences were submitted to regular issues of COMPEL. After EPNC 2004 in Poznan, for the first time selected and extended papers from EPNC were published as an E-Book of COMPEL. The current issue of COMPEL is the seventh such E-Book.

The aim of the EPNC 2016 was to present the recent advances in the analysis and synthesis of nonlinear electric and magnetic circuits, nonlinear optics and nonlinear electromagnetic problems in medicine, as well as to provide the forum for discussion and dissemination of recent results on applications of nonlinear phenomena in electrical engineering. The EPNC conferences are intended to be an opportunity to exchange ideas and experiences between specialists as well as young PhD students in electromagnetic field modelling, electric drives, electronics, electrical machines, and electric and magnetic materials. Topics of the symposiums included: Ferromagnetics and Magnetic Circuits, Semiconductors and Nonlinear Electric Circuits, Nonlinear Optics and Wave Propagation, Nonlinear Electromagnetic Problems in Medicine.

At EPNC in Helsinki, 75 papers were presented by participants from 14 countries. Two page versions of all papers were published in the conference proceedings. A limited number of 20 extended papers, selected in a peer review process, were chosen by EPNC 2016 Editorial Board and COMPEL Guest Editors for publication in this E-Book of COMPEL. The papers presented at the conference confirmed the general trends in the field of electromagnetism and electrical machines. Amongst those it is worth mentioning the attempts to accurately model the multi-physical behaviour of magnetic materials, such as coupled mechanics and magnetism or thermal and magnetic problems. This is motivated by the increasing efficiency requirements for electrical motors due to the European and international regulations regarding these devices. The other motivation is driven by the need to construct electrical machines able to work at higher temperature than conventional ones. Both trends require complex and costly material characterisation with non-standard measurement setups and devices and the related methodologies. From the devices point of view, the design and simulation of permanent magnet machines are the most prominent topics. The conference presentations showed that more accurate numerical methodologies or models of materials, e.g. hysteresis models, are still being developed and deployed for optimised designs of these machines. This is inspired by the increasing need for efficient and robust traction motors for the fast-developing field of hybrid and electric vehicles.

As at the last few EPNC conferences, a special Emerald/COMPEL award for the best paper delivered by a young researcher was offered by Professor Jan Sykulski, Editor-in-Chief of COMPEL, to Ugur Aydin (Aalto University) for the presentation of the paper entitled "A novel rotational single sheet tester design". Two COMPEL commendations were also awarded and special diplomas presented to Jan Karthaus (RWTH Aachen University, Institute of Electrical Machines) and Virginie Majchrzak (University Artois). The papers by the award-winning researchers may be found in this E-Book of COMPEL.


A new approach to steady state analysis of nonlinear electrical circuits,A nonlinear magnetic circuit model for periodic eddy current problems using T,F-F formulation,Calculation of eddy current and hysteresis losses during transient states in laminated magnetic circuits ,Comparative analysis of the three- and six-phase fractional slot concentrated winding permanent magnet machines,Comparison of static hysteresis models subject to arbitrary magnetization waveforms,Eddy current sensor simulation,Effect of mechanical stress on different iron loss components up to high frequencies and magnetic flux densities,Eliminating short switching cycles when using hysteresis control of resistance spot welding systems,Enhanced phase-domain synchronous machine model including saturation,Harmonic losses in high-speed PM synchronous machines,Impact of supply voltage variations on external magnetic field emitted by induction machines,Infinite-time linear-quadratic optimal control of the BLDC motor exploiting a nonlinear finite element model,Influence of the electrical circuit configurations of a DVR coupling transformer with a magnetic bypass,Magnetic and capacitive couplings influence on power losses in double circuit high voltage overhead transmission line,Minimization of a SynRel’s oscillating torque by calculation of the appropriate skew angle,Modelling anisotropy in non-oriented electrical steel sheet using vector Jiles-Atherton model,Modelling of magnetic and electric circuits,Parameter adaptation of simplified switched reluctance motor model using Newton and Gauss-Newton signal fitting methods,Three-phase four-wire shunt active power filter working simultaneously as energy conditioner,Towards a transformer transient model as a lumped-distributed parameter system,Waveform relaxation-Newton method to determine steady state: application to three-phase transformer

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