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The development of electrical machines is nowadays closely related to the knowledge of the electromagnetic fields throughout the different parts of a machine. Although a machine is often of complicated geometrical structure and of different, mostly nonlinear materials, modern numerical methods...
We discuss the following general problem given a composite, made from at least two different materials with each its own scalar, and possibly complexvalued and , distributed in space in a regular, crystallike, pattern, find the equivalent permittivity and permeability they will, in general, be...
The geometric properties of finite element mesh are of great importance. The refinement algorithm leads often to very irregular elements. The problem of optimization of 3Dmeshes is unsolved at this time. Only fragmentary methods are known. This paper presents a new concept of optimization...
Several formulations have been developed solving 3D eddy current problems by the Finite element method based on vector quantities. Scalars, involving only one unknown per node of the mesh seem to be, however, more efficient. A particular scalar potential formulation has already been developed...
Paper presents an effective iterative method for 3D magnetic field calculation taking the nonlinearity and anisotropy of the material into account. Algorithm for simulation of coupled 3D fieldcircuit transient problems has been also elaborated. Some steadystate and transient characteristics of...
Stationary and quasistationary boundaryintegral models for magnetic and electromagnetic fields in 3D arrangements composed of coils, cores and screens are given. The test results obtained with the use of the authors' test program BIMS are presented.
The evaluation of eddy currents in cylindrical geometries is examined analytically by using a method, which utilises the second order magnetic vector potential. As an example the threedimensional problem of the calculation of eddy currents inside a long conducting cylinder excited by a saddle...
The importance of vector finite elements for electromagnetic field computation has been extensively demonstrated in the recent literature. In this study we present a systematic approach to the construction of higher order vector shape functions based on dual vector expansions. The methodology...
Normal components of B and the tangential components of H alike are needed for the force calculation. If the field is calculated numerically, only one of these components is known exactly in numerical sense, the other one is known only approximately.
In this paper we present a variational method which fits very well in the wave behaviour of electrodynamics.
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