Thesis (M.S.)--University of Missouri--Rolla, 2007. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed March 24, 2008) Includes bibliographical references (p. 105-106).

Thesis (Ph. D.)--University of Washington, 1989. / Vita. Includes bibliographical references (leaves [118]-122).

Thesis (Ph. D.)--Ohio State University, 2007. / Title from first page of PDF file. Includes bibliographical references (p. 83-90).

Thesis (Ph. D.)--Ohio State University, 2007. / Title from first page of PDF file. Includes bibliographical references (p. 169-173).

Thesis (Ph. D.)--University of Missouri--Rolla, 2007. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 16, 2007) Includes bibliographical references (p. 134-136).

Thesis (doctoral)--Otto-von-Guericke-Universität Magdeburg, 2005. / "Dissertation zur Erlangung des akademischen Grades Doktoringenieur (Dr.-Ing.)." "This thesis presents a new method to derive a generalized transmission-line theory, the Transmssion Line Supertheory (TLST)"--p. 13. Includes bibliographical references (p. 127-138).

Thesis (M.Sc.) - Carleton University, 2006. / Includes bibliographical references (p. 128-134). Also available in electronic format on the Internet.

Thesis (M.S.)--Miami University, Dept. of Physics, 2007. / Title from first page of PDF document. Includes bibliographical references (p. 52-53).

O fenômeno \"crosstalk\" constitui-se de acoplamentos eletromagnéticos não intencionais entre condutores. Motivado pela importância deste fenômeno para a área de Compatibilidade Eletromagnética, este trabalho apresenta uma metodologia de análise do fenômeno através do aplicativo SPICE considerando-se configurações compostas por condutores múltiplos. A proposta de desenvolvimento de uma ferramenta computacional de simulação do fenômeno utilizando uma versão estudantil, com livre acesso, possibilita, entre outras coisas, a disseminação de um modelo alternativo, simples e eficaz, e a inclusão do estudo do \"crosstalk\" no conteúdo programático de cursos de Graduação ou Pós-graduação. Para este fim, adotou-se um modelo de simulação de acoplamento eletromagnético com base em modelos de linha de transmissão. Tal modelo é complementado com geradores vinculados controlados por tensão e corrente, que representam fontes de interferência eletromagnética. Em face de limitações dos blocos funcionais que representam essas fontes no aplicativo, foi utilizado em um primeiro instante um método de representação do modelo através de arquivos-texto, ao invés da utilização da interface gráfica existente no software. Posteriormente, novos blocos foram desenvolvidos e acrescentados à biblioteca, tornando possível à aplicação dessa interface diretamente nas simulações. A validação do modelo foi feita, inicialmente, comparando-se os resultados simulados àqueles disponíveis na literatura internacional. Além disto, foi desenvolvida uma bancada experimental para comprovação dos resultados e validação do modelo implementado no aplicativo SPICE através de casos simples do fenômeno. Esses resultados mostram a viabilidade da utilização dos componentes desenvolvidos para o aplicativo, tornando possível e confiável o uso dessa ferramenta na simulação do fenômeno \"crosstalk\". Passou-se então a aplicação da ferramenta desenvolvida a sistemas mais complexos com um número superior de condutores. / This work presents an approach, in which the well-known SPICE simulator is used as a tool to simulate the phenomenon crosstalk. Basically, it is based on transmission line model, where the electromagnetic interferences are simulated by controlled voltage and current sources. Due to the limitations of the available Spice models concerning multiconductors configurations, additional models were developed and implemented as part of the SPICE library. Theoretical and experimental results were obtained. They were used as part of the validation process of the proposed methodology. The developing of specific models allowed the use of this modeling in SPICE student versions. This turns possible the introduction of crosstalk simulations in undergraduate and graduate courses. Besides, the methodology was applied to complex systems in order to present its versatility.

Thesis (DTech (Electrical Engineering))--Cape Peninsula University of Technology, 2016. / Geomagnetically induced currents (GIC) are currents induced in ground-based conductor networks in the Earth's surface. The GIC are driven by an electric eld induced by geomagnetic variations which are a result of time-varying magnetospheric-ionospheric currents during adverse space weather events. Several studies have shown that there is a likelihood of technological damage (the power grid) in the mid- and low-latitude regions that could be linked to GIC during some geomagnetic storms over the past solar cycles. The effects of GIC in the power system can range from temporary damage (e.g. protective relay tripping) to permanent damage (thermal transformer damage). Measurements of GIC in most substations are done on the neutral-to-ground connections of transformers using Hall-effect transducers. However, there is a need to understand the characteristics of GIC in the power lines connected to these transformers. Direct measurements of GIC in the power lines are not feasible due to the low frequencies of these currents which make current measurements using current transformers (CT) impractical. This thesis discusses two techniques that can be employed to enhance understanding GIC characteristics in mid-latitude regions. The techniques involve the measurement of GIC in a power line using differential magnetometer measurements and modelling GIC using the finite element method. Low frequency magnetometers are used to measure magnetic felds in the vicinity of the power lines and the GIC is inferred using the Biot-Savart law. A finite element model, using COMSOL-Multiphysics, is used to calculate GIC with the measured magnetic field and a realistic Earth conductivity profile as inputs. The finite element model is used for the computation of electric field associated with GIC modelling.