COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 23 Issue 4
Table of contents
Fast and efficient 3D boundary element method for closed domains
André Buchau, Wolfgang Hafla, Wolfgang M. RuckerAn application of a boundary element method to the solution of static field problems in closed domains is presented in this paper. The fully populated system matrix of the…
Formulation of mixed elements for the 2D‐BEM
Klaus Schimmanz, Arnulf KostAccuracy and time consumption in numerical computations are often in contradiction to each other. In modern industrial design processes flux field computation becomes more and…
Coupled mechanical‐electrostatic FE‐BE analysis with FMM acceleration: Application to a shunt capacitive MEMS switch
R.V. Sabariego, J. Gyselinck, P. Dular, J. De Coster, F. Henrotte, K. HameyerThis paper deals with the coupled mechanical‐electrostatic analysis of a shunt capacitive MEMS switch. The mechanical and electrostatic parts of the problem are modelled by the FE…
Comparison of 3D magnetodynamic formulations in terms of potentials with imposed electric global quantities
T. Henneron, S. Clénet, F. PiriouMethods to impose a voltage or a current in massive conductors in dual magnetodynamic potential formulations (A‐φ and T‐KI‐Ω) are presented. In the A‐φ formulation, a supply…
Modelisation of thin cracks with varying conductivity in eddy‐current testing
Ph. BeltrameIn the ideal crack model (negligible thickness and an impenetrable barrier to electric current) in eddy‐current testing frame, the field‐flaw is equivalent to a current dipole…
Efficient modelling techniques for complicated boundary conditions applied to structured grids
Herbert De Gersem, Markus Wilke, Markus Clemens, Thomas WeilandCertain sophisticated boundary conditions offer powerful modelling features for many electrotechnical models. Their application, however, wipes out the particular structure of the…
Non‐nested geometric multigrid method using consistency error correction for discrete magnetic curl‐curl formulations
M. Clemens, S. Feigh, M. Wilke, T. WeilandThe simulation of magnetic fields with geometric discretization schemes using magnetic vector potentials involves the solution of very large discrete consistently singular…
Wavelet's application in electrostatic and their computing aspects
Aldo Artur Belardi, José Roberto Cardoso, Carlos Antonio França SartoriThis paper presents the mathematical basis, and some results, concerning the application of the Haar's Wavelets as the expansion function in the method of moments. Some…
Comparisons of finite element and Rayleigh methods for the study of conical Bloch waves in arrays of metallic cylinders
S. Guenneau, A. Nicolet, C. Geuzaine, F. Zolla, A.B. MovchanThis paper investigates new technological devices to be utilised in future optical communications, by means of variational method (FEM) and multipole scattering approach (Rayleigh…
The Newton‐Raphson method for solving non‐linear and anisotropic time‐harmonic problems
H. Vande Sande, F. Henrotte, K. HameyerThis paper discusses the use of a complex‐valued reluctivity tensor for modelling non‐linear, anisotropic and hysteretic materials in a time‐harmonic finite element context. It is…
Complementary two‐dimensional finite element formulations with inclusion of a vectorized Jiles‐Atherton model
J. Gyselinck, L. Vandevelde, J. Melkebeek, P. DularThis paper deals with the magnetic vector and scalar potential formulation for two‐dimensional (2D) finite element (FE) calculations including a vector hysteresis model, namely a…
Transient field‐circuit coupled formulation based on the finite integration technique and a mixed circuit formulation
Galina Benderskaya, Herbert De Gersem, Thomas Weiland, Markus ClemensThe coupling between a 3D modified magnetic vector potential formulation discretized by the finite integration technique and an electrical circuit that includes solid and stranded…
Field‐circuit model of the dynamics of electromechanical device supplied by electronic power converters
Lech Nowak, Jacek MikołajewiczThis paper presents a coupled field‐circuit simulation of transients in a non‐linear electromagnetic device supplied by electronic power converters (inverters, PWM systems). The…
Field‐circuit transient analysis of a magnetorheological fluid brake
W. Szeląg, P. Sujka, R. WalendowskiThis paper deals with coupled electromagnetic, hydrodynamic and mechanical motion phenomena in magnetorheological fluid brakes. The governing equations of these phenomena are…
The eggshell approach for the computation of electromagnetic forces in 2D and 3D
François Henrotte, Geoffrey Deliége, Kay HameyerThe expressions of the material derivative of differential forms in the language of vector analysis are introduced. These formulae allow us to describe naturally the…
Comparison of sliding‐surface and moving‐band techniques in frequency‐domain finite‐element models of rotating machines
Herbert De Gersem, Johan Gyselinck, Patrick Dular, Kay Hameyer, Thomas WeilandThe sliding‐surface and moving‐band techniques are introduced in frequency‐domain finite element formulations to model the solid‐body motion of the rotors in an cylindrical…
Orthogonal transformation of moving grid model into fixed grid model in the finite element analysis of induction machines
Andrzej Demenko, Dorota StachowiakThe equivalent fixed grid and moving grid models for the finite element (FE) analysis of an induction machine are presented. The discussed transformation is the FE representation…
Axisymmetric transient electromagnetic finite‐difference scheme including prescribed motion
M. KlockeA finite‐difference‐scheme for axisymmetric transient electromagnetic fields is presented, which also takes into account an arbitrary prescribed motion of a substructure and…
Multi‐domain topology optimization of electromagnetic systems
Semyung Wang, Seungkyu Park, Jenam KangThe design of multi‐domain that considers all components of electromagnetic systems such as air, iron, magnet, and coil is investigated using topology optimization, interpolation…
Optimal design of induction heating equipment for high‐speed processing of a semiconductor
Yoshifumi Okamoto, Toshio Imai, Daisuke Miyagi, Norio Takahashi, Kazuhiro Ozaki, Hiroshi Ono, Naoki UchidaInduction heating is widely used in the industry due to high efficiency, precise control, rapid heating and low pollution properties. To process a semiconductor of high quality…
Optimal characterization of LF magnetic field using multipoles
R. Scorretti, R. Takahashi, L. Nicolas, N. BuraisThe LF magnetic field (50 Hz‐100 kHz) generated in the air by electrical appliances is characterised using multipoles. The maximum likelihood estimation of an equivalent…
A new approach for shape optimization of resistors with complex geometry
M. Purcar, J. Deconinck, L. Bortels, C. Munteanu, E. Simion, V. TopaThis paper presents a new numerical approach for shape optimization of resistors with complex geometry. The aim of this method is to develop a systematic modification of resistor…
Comparison of static, dynamic, and static‐dynamic eccentricity in induction machines with squirrel‐cage rotors using 2D‐transient FEM
Christoph Schlensok, Gerhard HennebergerFinite‐element simulations of induction machines with squirrel‐cage rotor require transient solution algorithms. For this reason a transient 2D solver is utilized which takes…
Electrical machine analysis considering field – circuit – movement and skewing effects
A.M. de Oliveira, R. Antunes, P. Kuo‐Peng, N. Sadowski, P. DularThis paper presents a method to analyse electrical machines considering simultaneously the electromagnetic field, electric circuit, control loop, movement and skewing effects. The…
FEM analysis of current limiting devices using superconducting thin film and AC losses of YBCO coated conductor
H. Ohsaki, Y. Ichiki, S. SugitaA numerical analysis tool has been developed to study electromagnetic characteristics of high‐temperature superconducting thin film used for a resistive‐type fault current limiter…
Comparison of 3D and 2D field‐circuit models of power transformer transients
Lech Nowak, Andrzej Demenko, Wojciech SzelągThis paper deals with a coupled field‐circuit simulation of transients in a three‐phase, three‐limb power transformer taking non‐linearity into consideration. A comparative…
Calculation of magnetization characteristic of a squirrel cage machine using edge element method
Andrzej Demenko, Lech Nowak, Wojciech PietrowskiThis paper presents the finite element method for the calculation of open‐circuit characteristic of a squirrel cage machine with saturated core. The flux linkage with the stator…
Edge element analysis of brushless motors with inhomogeneously magnetized permanent magnets
Dorota StachowiakThis paper demonstrates how the 3D edge element method can be applied to the analysis of permanent magnet motors. The edge element method using the vector magnetic potential has…
Adaptive observer of rotor speed and position for PMSM sensorless control system
Konrad Urbański, Krzysztof ZawirskiThis paper deals with the problem of rotor speed and position detection in sensorless permanent magnet synchronous motor (PMSM) drives. A concept based on detecting the back EMF…
A shunt active power filter: development of properties
Andrzej SzrombaNumerous types of shunt active power filters have been proposed in many papers. The classification of these filters depends on various points of view. However, every type of a…
ISSN:
0332-1649Online date, start – end:
1982Copyright Holder:
Emerald Publishing LimitedOpen Access:
hybridEditor:
- Prof Jan Sykulski