Search for dissertations about: "thomas eriksson"

Showing result 1 - 5 of 40 swedish dissertations containing the words thomas eriksson.

  2. 1. High Voltage Insulation Diagnostics Utilizing HTS-SQUID Based Amplifiers

    Author : Thomas Eriksson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; dielectric response; current amplifier; partial discharge; Rogowski sensor; SQUID; voltage amplifier;

    Abstract : In the design and development of high voltage insulation systems, different diagnostic methods are often used for system characterization. It is therefore crucial to continuously improve existing methods and to develop new ones. READ MORE

  4. 2. Speech coding from a variable rate perspective

    Author : Thomas Eriksson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; CELP; variable rate coding; speech coding;

    Abstract : .... READ MORE

  5. 3. Vector Quantization in Speech Coding. Variable Rate, Memory and Lattice Quantization

    Author : Thomas Eriksson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This dissertation focuses on different quantization methods in speech coding. Variable rate quantization has the potential to substantially reduce the bit rate requirements in speech coding. READ MORE

  6. 4. Control of Wave Energy Converters in arrays

    Author : Simon Thomas; Jens Engström; Mikael Eriksson; Jan Isberg; Erland Strömstedt; Axel Bochert; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

    Abstract : One way to lower the levelized cost of energy for wave power plants and paving so the way for commercial success, is to increase the power absorption by use of advanced control algorithms. This thesis investigates the influence of the generator inertia, the generator damping and the layout on power absorption and presents a new model free strategy of controlling wave energy converters. READ MORE

  7. 5. Electronic Transport in Strained Materials

    Author : Thomas Dziekan; Susanne Mirbt; Olle Eriksson; Per Hyldgaard; Uppsala universitet; []
    Keywords : Physics; Conductivity; Strain; Transport; Boltzmann theory; Transition metal; Hydrogen loading; Electronic structure; Density functional theory; Bulk material; Multilayer; Fysik;

    Abstract : In this thesis the conductivity of strained materials has been investigated using density functional theory and a semiclassical transport theory based on the Boltzmann equation.In transition metals trends are reproduced without adjustable parameters. READ MORE