Browsing Masters Degrees (Electrical and Electronic Engineering) by Title

Now showing items 542-561 of 578

    • A T-resonator technique for aperture plane admittance parameters of electrically short RF monopoles 

      Kwinana, Phumezo M. (Stellenbosch : University of Stellenbosch, 2006-12)
      This thesis focuses on the coaxial-microstrip T-resonator measurement technique to determine the aperture plane capacitance and radiation resistance of electrically short monopoles above a finite ground plane at Radio ...

    • Techniques for enhancing the PLD growth of superconducting YBCO thin films 

      Hardie, Graham Lyall (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: High Temperature Superconductors (HTS) exhibit exceptional electrical properties that make them attractive candidates for numerous electronic devices and applications. However, constructing working ...

    • Thermal analysis of commercially available water heaters: a focus on the South African national standard 

      Reid, Gunnar James (Stellenbosch : Stellenbosch University, 2016-03)
      ENGLISH ABSTRACT: The improvement of energy efficiency in the residential sector is one of the simplest ways of making the use of resources more sustainable. One of the strategies used is to look at those household appliances ...

    • A three-phase AC/AC matrix converter system 

      Gebrehiwet Gebregergis, Abraham (Stellenbosch : University of Stellenbosch, 2004-12)
      ENGLISH ABSTRACT: The thesis discusses the analysis and design of a three-phase-to-three-phase direct AC-AC matrix converter. A background study of the various matrix converter topologies and their modulation strategies ...

    • Time domain metrology for MeerKAT systems 

      Matthysen, Nardus (Stellenbosch : Stellenbosch University, 2014-12)
      ENGLISH ABSTRACT: This work in this study covers a powerful technique to derive propagation and scattering information in an expedient fashion. Expedient because time-domain (TD) data gathers a broad spectrum in a single ...

    • Towards a distributed real-time system for future satellite applications 

      Rozendaal, A. (Abraham) (Stellenbosch : Stellenbosch University, 2003-12)
      ENGLISH ABSTRACT: The Linux operating system and shared Ethernet are alternative technologies with the potential to reduce both the development time and costs of satellites as well as the supporting infrastructure. Modular ...

    • Towards a framework for the design and development of a system for practical education in electrical engineering 

      Oosthuizen, Pieter Cornelius (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT: How to educate undergraduate students in the practical aspects of engineering is a complex problem. To address it requires both a technical solution (referring to the equipment itself) as well as a study ...

    • Towards a global SQUID network through optimal monitoring station design 

      Lochner, Emile Tobias (Stellenbosch : Stellenbosch University, 2015-03)
      ENGLISH ABSTRACT: The Superconducting Quantum Interference Device (SQUID) is one of the most sensitive magnetic field sensors in the world. These instruments can only be used optimally for geomagnetic research if placed ...

    • Towards understanding and improving the safety of informal public transport in Sub-Saharan Africa : a real-time sensing and reporting system for minibus taxis 

      Zeeman, Adriaan Siebrits (Stellenbosch : Stellenbosch University, 2013-12)
      ENGLISH ABSTRACT: Developed countries have led the way in the implementation of Intelligent Transport Systems (ITS), with the main objectives of improving road safety and efficiency. Current ITS solutions are heavily ...

    • Tracking collar and infrastructure for leopard research 

      Warnich, Dirk J. (Stellenbosch : Stellenbosch University, 2012-12)
      ENGLISH ABSTRACT: This project targeted the development of a new tracking collar, trap telemetry system and supporting infrastructure, to aid researchers from the Cape Leopard Trust. Previously used collar products had ...

    • Transformerless series dip/sag compensation with a multilevel cascaded inverter 

      Visser, Abraham Johannes (Stellenbosch : Stellenbosch University, 2001-12)
      ENGLISH ABSTRACT: This thesis covers the development of a multilevel cascaded inverter for the purpose of costeffective transformerless series dip compensation. Of all known power quality problems, voltage dips are the ...

    • Transformerless series dip/sag compensation with ultracapacitors 

      Becker, Martin Gerhard (Stellenbosch : University of Stellenbosch, 2004-12)
      ENGLISH ABSTRACT: This thesis covers the development of a transformerless series dip compensator. Of all known power quality problems, voltage dips are the greatest reason for concern. Series injection dip compensators offer ...

    • Transient modelling of induction motors in a petrochemical plant using Matlab 

      Claassens, Andries Johannes (Stellenbosch : Stellenbosch University, 2008-03)
      ENGLISH ABSTRACT: The behaviour of induction motors at a petrochemical plant under transient conditions was investigated with the view to improve plant immunity to voltage fluctuations. The benefits of using a ...

    • The transputer virtual memory system 

      Mostert, Sias (Stellenbosch : Stellenbosch University, 1990)
      ENGLISH ABSTRACT: The transputer virtual memory system provide, for the transputer without memory management primitives, a viable virtual memory system. This report evaluates the architecture and its parameters. The ...

    • Tree-based Gaussian mixture models for speaker verification 

      Cilliers, Francois Dirk (Stellenbosch : University of Stellenbosch, 2005-12)
      The Gaussian mixture model (GMM) performs very effectively in applications such as speech and speaker recognition. However, evaluation speed is greatly reduced when the GMM has a large number of mixture components. ...

    • Tune-all wideband planar filters for KAT-7 

      Beukman, Theunis Steyn (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: A new type of wideband lters, with tunability in both the centre frequency and bandwidth, is presented in this thesis. These lters are based on perturbed ring-resonators in cascade, while varactor ...

    • A unified strategy for windup prevention in control systems with multiple saturating actuators 

      Browne, Michael John (Stellenbosch : Stellenbosch University, 2000-12)
      ENGLISH ABSTRACT: A unified method is proposed to treat saturation in both Multi-Input-Multi-Output MIMO and Single-Input-Single-Output controllers. This method offers superior performance over existing MIM 0 anti-saturation ...

    • An unmanned aircraft system for maritime search and rescue 

      Meredith, Andre Paul (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: Search and Rescue is an essential service provided by States and Militaries to search for, locate and rescue survivors of accidents and incidents. Civil Search and Rescue utilizes a system of well-trained ...

    • Unsupervised clustering of audio data for acoustic modelling in automatic speech recognition systems 

      Goussard, George Willem (Stellenbosch : University of Stellenbosch, 2011-03)
      ENGLISH ABSTRACT: This thesis presents a system that is designed to replace the manual process of generating a pronunciation dictionary for use in automatic speech recognition. The proposed system has several stages. The ...

    • Upgrading of a radar system to implement a firmware based pulse compressor 

      Rust, Johannes Stephanus Warnich (Stellenbosch : Stellenbosch University, 2007-03)
      ENGLISH ABSTRACT: This project investigates the improvement of an existing radar system by means of currently available technologies and signal processing techniques. Upgrades are aimed to improve the system's speci cations ...