Book ChapterDOI
Electromagnetic Modeling of Electrical Machinery for Design Applications
M. V. K. Chari
- pp 3-14
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TLDR
This paper describes the application of the finite element method to electrical machine modeling taking into account iron saturation, eddy currents in conducting parts and the distributed nature of materials and sources.Abstract:
The need for design optimization and operational reliability of electrical machinery necessitates accurate performance prediction at the design stage. This in turn requires the detailed evaluation of the magnetic field distribution in the machine geometry. The finite element method offers a stable numerical solution technique with a good deal of precision. This method requires the formulation of the partial differential equations in variational terms or by a weighted residual procedure. In the case of the former an energy related expression called a functional is minimized with respect to a set of trial solutions. This paper describes the application of the finite element method to electrical machine modeling taking into account iron saturation, eddy currents in conducting parts and the distributed nature of materials and sources. Some of the areas surveyed are utility generators, skin-effect in busbars, eddy current losses in transformers, and others.read more
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Dissertation
FEM based Virtual Prototyping and Design of Third Harmonic Excitation System for Low Voltage Brushless Alternators
TL;DR: In this article, the authors explored design and implementation of an excitation system and its dynamic performance has a direct impact on the alternator's stability and reliability, which in turn necessitates de-rating of the machine especially when connected to nonlinear loads.
References
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Journal ArticleDOI
Methods of Conjugate Gradients for Solving Linear Systems
TL;DR: An iterative algorithm is given for solving a system Ax=k of n linear equations in n unknowns and it is shown that this method is a special case of a very general method which also includes Gaussian elimination.
Book
Numerical methods in finite element analysis
TL;DR: Numerical methods in finite element analysis, Numerical techniques in finite elements analysis, and so on.
Proceedings ArticleDOI
Reducing the bandwidth of sparse symmetric matrices
E. Cuthill,J. McKee +1 more
TL;DR: A direct method of obtaining an automatic nodal numbering scheme to ensure that the corresponding coefficient matrix will have a narrow bandwidth is presented.
Journal ArticleDOI
A frontal solution program for finite element analysis
TL;DR: The program given here assembles and solves symmetric positive–definite equations as met in finite element applications, more involved than the standard band–matrix algorithms, but more efficient in the important case when two-dimensional or three-dimensional elements have other than corner nodes.
Journal ArticleDOI
Finite-Element Solution of the Eddy-Current Problem in Magnetic Structures
TL;DR: In this article, the field region is discretised by triangular Finite-elements and the solution to the field problem is obtained by minimizing the energy functional with respect to each of the vertex values of the vector potential.