Numerical solution of 2- or 3-dimensional nonlinear field problems by means of the computer program PROFI

Abstract

Contents:The paper describes the outlines of the computer program PIROFI (proglam for calculation of fields) which calculates 2-or 3-dimensional nonlinear magnetostatic fields, linear electrostatic or stationary electric fields, stationary nonlinear 2 dimensional eddy-current fields and stationary temperature distributions. The program uses the finite difference method. The calculations may be carried out in one of five different coordinate systems, two of them being 3-dimensional. A set of service programs for preparing the input data, analysing the results, data handling etc. simplifies the use of the program. Numerische

Discrete Electromagnetism with the Finite Integration Technique

“…4, will lead to the problem of staircase approximations of curved boundary surfaces. To overcome this problem sophisticated schemes are available with FIT for improved geometry approximation and material averaging inside the cells such as the triangular filling technique [12], the tetrahedral filling technique [13], [14] or the Perfect Boundary Approximation technique [15]. They allow to use computationally efficient, structured Cartesian grids, while at the same time reducing the geometry approximation error of the method (Fig.…”

A new static field solver with open boundary conditions in the 3D-CAD-system MAFIA

“…Up to this point, S3 is very similar to the static code PROFI [6]. The advantages, however, will be the easier handling of input and results, for S3 can use all the features of the MAFIA system.…”

On the Inductance and Force Calculation of a Three Axes Torque Motor

“…The third solution method applied on the inductance calculation is a Finite Difference method [4] specially appropriate for rectangular or radial material contours. The grid applied on the PM motor model contains about 100 meshes in x and 50 in y direction.…”

“…The transient forces are determined by the numerical field program system PROFI [4] and PROFI transient [5]. The two-dimensional field components can be derived from the scalar potential Φ M or from the vector potential A.…”