COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 20 Issue 2
Table of contents
A fast 3D eddy current integral formulation
R. Albanese, G. Rubinacci, A. Tamburrino, S. Ventre, F. VilloneIn this paper we present a fast method for the computation of matrix‐by‐vector products arising from the discretization of an integral formulation of the three‐dimensional eddy…
3D eddy current FE analysis of electromechanical devices
Aldo Canova, Marco Ottella, Roger John Hill‐CottinghamPresents the use of a 3D eddy current FE procedure for the analysis and design of two different induction machine structures: a radial and an axial machine. In the first case…
Analysis of magnetostatic field for some class of inhomogeneous problems by BEM
Eugeniusz KurganPresents an application of the boundary element method to the analysis of magnetic fields in materials for which permeability depends non‐linearly on spatial co‐ordinates. A new…
Edge element multigrid solution of non‐linear magnetostatic problems
Bernhard Weiß, Oszkár BíróA geometric multigrid (MG) method for the efficient solution of 3D non‐linear magnetostatic field problems is presented. A finite element method (FEM) with edge elements is used…
Advanced FI2TD algorithms for transient eddy current problems
Markus Clemens, Markus Wilke, Thomas WeilandTransient eddy current formulations based on the Finite Integration Technique (FIT) for the magneto‐quasistatic regime are extended to include motional induction effects of moving…
Field‐excited multiconductor transmission lines: a wavelet approach
S. Barmada, A. Musolino, M. RaugiThe analysis of multiconductor transmission lines excited by an electromagnetic field is investigated here by the use of the wavelet expansion. The exciting field is taken into…
Evaluation of transient field in unbounded dissipative media
Jarmila Dedkova, Libor Dedek, Juraj ValsaA new finite element method (FEM) approach is used to evaluate transient electric field based on a surge wave in a dissipative open region. Instead of the solution of the basic…
Calculation of the field map from the measurement data of the fluxset sensor
József Pávó, Oszkár Bíró, Karl HollausThe relation between the output of the fluxset sensor and the magnetic field is established by the numerical and experimental investigation of an ECT set‐up. A fast calculation…
Triangle search method for nonlinear electromagnetic field computation
Irina Munteanu, Silvia Drobny, Thomas Weiland, Daniel IoanThis paper presents a hybrid algorithm used, in conjunction with the Finite Integration Technique (FIT), for solving static and quasistatic electromagnetic field problems in…
Numerical calculation of total force upon permanent magnets using equivalent source methods
Federico Delfino, Andrea Manella, Paolo Molfino, Mansueto RossiThe application of the equivalent source methods for the numerical calculation of the total magnetic force acting upon a permanent magnet is proposed. These methods are formulated…
Discontinuous finite element methods for the simulation of rotating electrical machines
P. Alotto, A. Bertoni, I. Perugia, D. Scho¨tzauThe capability of discontinuous finite element methods of handling non‐matching grids is exploited in the simulation of rotating electrical machines. During time stepping, the…
Electromagnetic analysis in devices with sliding contacts
Antonino MusolinoIn this paper an integral formulation for the analysis of systems with moving conductors has been extended to take into account the presence of sliding contacts. The proposed…
Partial discharges in insulation of medium voltage systems
Igor Tičar, Jože Pihler, Oszkár Bíró, Kurt PreisThe term “partial discharges” (PD) is a common term for various phenomena: discharges at points or edges of cylindrical conductors, in gases and gas insulated devices, liquid…
An improved technique for enhancing diversity in Pareto evolutionary optimization of electromagnetic devices
P. Di Barba, M. Farina, A. SaviniWhen a multiobjective optimization problem is tackled using Pareto optima theory, particular care has to be taken to obtain a full sampling of the Pareto Optimal Front. This leads…
Hierarchical simulated annealing vs. a Gauss‐Newton scheme applying analytical Jacobians for the solution of a source current distribution problem
Bernhard Brandstätter, Christian MageleConsiders, without loss of generality, a simple linear problem, where in a certain domain the magnetic field, generated by infinitely long conductors, whose locations as well as…
Optimal design of an inductor for transverse flux heating using a combined evolutionary‐simplex method
M. Battistetti, P. Di Barba, F. Dughiero, M. Farina, S. Lupi, A. SaviniTransverse flux induction heating (TFH) is a process advantageously applied for the heat treatment of thin non‐ferrous metal strips. In comparison with the better known…
Optimal placement of probes in magnetostatic reconstruction ‐ The case of plasma identification in Tokamaks
A. Formisano, R. Martone, F. TrevisanThe applied research in the thermonuclear fusion area is directed towards the design of a commercial reactor. In such a reactor, the room required for the probes deputised to…
Strong coupled multi‐harmonic finite element simulation package
Herbert De Gersem, Hans Vande Sande, Kay HameyerThe harmonic balanced finite element method offers a valuable alternative to the transient finite element method for the quasi‐static simulation of electromagnetic devices…
Fast field computations with the fast multipole method
André Buchau, Wolfgang Rieger, Wolfgang M. RuckerThe application of the fast multipole method reduces the computational costs and the memory requirements of the boundary element method from O(N2) to approximately O(N). In this…
Modified Bean model and FEM method combined for persistent current calculation in superconducting coils
C. Völlinger, M. Aleksa, S. RussenschuckField variations in the LHC superconducting magnets, e.g.during the ramping of the magnets, induce magnetization currents in the superconducting material, the so‐called persistent…
A comparison of 2D and 3D analysis methods for the prediction of cogging torque in an electrical machine having skewed slots
David A. Lowther, Behzad Forghani, Uday DeshpandeTwo‐ and three‐dimensional computations of the cogging torque in a brushless dc motor are compared with measurements for both skewed and unskewed stators. The modeling of stator…
Multigrid methods for the computation of 3D electromagnetic field problems
M. Kaltenbacher, S. Reitzinger, M. Schinnerl, J. Schöberl, H. LandesThe focus of this paper is on the efficient numerical computation of 3D electromagnetic field problems by using the finite element (FE) and multigrid (MG) methods. The magnetic…
Verification of extended sources reconstruction techniques using a torso phantom
Hartmut Brauer, Marek Ziolkowski, Uwe Tenner, Jens Haueisen, Hannes NowakApplies four different minimum norm estimations with common regularization techniques, often used in biomedical applications to the solution of the biomagnetic inverse field…
Parallel field computation based on coupling of differential and integral methods
Volker Rischmüller, Stefan Kurz, Wolfgang M. RuckerThis paper deals with the coupling of a parallelized differential (FEM) and a parallelized integral approach (BEM) under control of a master process within the framework of a…
Numerical evaluation of electromagnetic field effects in electric arc furnaces
Florin David, Tiberiu Tudorache, Virgiliu FirteanuThis paper presents a 3D numerical modeling of electromagnetic and thermal fields in three‐phase electric arc furnaces. The thermal effect of the foamy slag is studied in the…
Numerical computation of the emitted noise of power transformers
M. Rausch, M. Kaltenbacher, H. Landes, R. LerchA recently developed calculation scheme for the numerical computation of the load‐controlled acoustic noise of power transformers is presented. This modeling scheme allows the…
ISSN:
0332-1649Online date, start – end:
1982Copyright Holder:
Emerald Publishing LimitedOpen Access:
hybridEditor:
- Prof Jan Sykulski