Topic
Computational electromagnetics
About: Computational electromagnetics is a research topic. Over the lifetime, 6412 publications have been published within this topic receiving 113727 citations. The topic is also known as: Electromagnetic field analysis.
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TL;DR: In this article, a fast solution to the volume integral equation for electromagnetic scattering from three-dimensional inhomogeneous dielectric bodies by using the precorrected-fast Fourier transform (FFT) method was presented.
Abstract: This work presents a fast solution to the volume integral equation for electromagnetic scattering from three-dimensional inhomogeneous dielectric bodies by using the precorrected-fast Fourier transform (FFT) method. The object is modeled using tetrahedral volume elements and the basis functions proposed by Schaubert et al. are employed to expand the unknown electric flux density. The basis functions are then projected onto a fictitious uniform grid surrounding the nonuniform mesh, enabling the FFT to be used to speed up the matrix-vector multiplies in the iterative solution of the matrix equation. The resultant method greatly reduces the memory requirement to O(N) and the computational complexity to O(NlogN), where N is the number of unknowns. As a result, this method is capable of computing electromagnetic scattering from large complex dielectric objects.
68 citations
Book•
01 Jan 2001
TL;DR: 1.Classical Electrodynamics, numerical Field Theory, and Numerical Treatment of Linear Systems: Applications from Electrical Engineering.
Abstract: 1.Classical Electrodynamics.- 2. Numerical Field Theory.- 3. Numerical Treatment of Linear Systems.- 4. Applications from Electrical Engineering.- 5. Applications from Accelerator Physics.- Summary.- References.- Symbols.
68 citations
TL;DR: The analytical multiphysics models of a computer-aided-design software which is applied to inverter-fed traction induction machines are described and some simulation results are presented on a self-ventilated closed motor and compared to experiments.
Abstract: The design of variable-speed electrical machines involves several fields of physics, such as electromagnetism, thermics, mechanics, and also acoustics. This paper describes the analytical multiphysics models of a computer-aided-design software which is applied to inverter-fed traction induction machines. The electromagnetic model computes rotor and stator currents, the induction-machine traction characteristics, and the radial air-gap flux density. The mechanical and acoustic models compute the motor's audible magnetic noise level due to Maxwell forces. The thermal model based on 3-D nodal network computes the transient temperature of different parts of the motor. These fast models make it possible to couple the software with some optimization tools. Some simulation results are presented on a self-ventilated closed motor and compared to experiments.
68 citations
TL;DR: In this article, a comparative evaluation of the available corona models in terms of their accuracy and suitability for interface with the EMTP (electromagnetic transients program) was made.
Abstract: The main purpose of this study is to make a comparative evaluation of the large number of available corona models in terms of their accuracy and suitability for interface with the EMTP (electromagnetic transients program). The recommended models have been interfaces with the standard frequency dependent transmission line model in the EMTP. This line model has been modified to avoid error accumulation over the large number of line segments needed in corona representations. Field test comparisons have been performed and good agreement was found with a classical field test. >
67 citations
TL;DR: In this article, an innovative technique is described to solve the electromagnetic problem in the presence of a cracked conductor, where features of an integral formulation in terms of a two-component electric vector potential expanded over edge elements are fully exploited.
67 citations