Search for dissertations about: "frequency-domain analysis"
Showing result 1 - 5 of 77 swedish dissertations containing the words frequency-domain analysis.
-
1. On the Frequency Domain Analysis of Nonlinear Systems
University dissertation from Linköping : Linköping UniversityAbstract : In this report we study how the Volterra series description of nonlinear systems can be applied to some different problems.We study oscillations in nonlinear systems. READ MORE
-
2. Fast Numerical Techniques for Electromagnetic Problems in Frequency Domain
University dissertation from Uppsala : Acta Universitatis UpsaliensisAbstract : The Method of Moments is a numerical technique for solving electromagnetic problems with integral equations. The method discretizes a surface in three dimensions, which reduces the dimension of the problem with one. A drawback of the method is that it yields a dense system of linear equations. READ MORE
-
3. Analysis of VSC-based HVDC systems
University dissertation from ; Chalmers tekniska högskola; GothenburgAbstract : The main objective of this thesis is to perform stability and control studies in the area of VSC-HVDC systems. A major part of the investigation focuses on the development of procedures, whose aim is to understand, explain and avoid poorly-damped conditions or instability that may appear due to dc-side resonances, which stem from the interaction of converters and passive elements in such systems. READ MORE
-
4. Iterative solution of Maxwell's equations in frequency domain
University dissertation from Uppsala UniversityAbstract : We have developed an iterative solver for the Moment Method. It computes a matrix–vector product with the multilevel Fast Multipole Method, which makes the method scale with the number of unknowns. The iterative solver is of Block Quasi-Minimum Residual type and can handle several right-hand sides at once. READ MORE
-
5. Hybrid Methods for Computational Electromagnetics in Frequency Domain
University dissertation from Stockholm : Numerisk analys och datalogi (NADA), (tills m KTH)Abstract : In this thesis we study hybrid numerical methods to be used in computational electromagnetics. The purpose is to address a wide frequency range relative to a given geometry. We also focus on efficient and robust numerical algorithms for computing the so called Smooth Surface Diffraction predicted by Geometrical Theory of Diffraction (GTD). READ MORE
