Search for dissertations about: "Design of Induction"

Showing result 21 - 25 of 96 swedish dissertations containing the words Design of Induction.

  1. 21. Analysis, Modeling and Control of Doubly-Fed Induction Generators for Wind Turbines

    Author : Andreas Petersson; Chalmers University of Technology; []
    Keywords : ;

    Abstract : This thesis deals with the analysis, modeling, and control of the doubly-fed induction machine used as a wind turbine generator. The energy efficiency of wind turbine systems equipped with doubly-fed induction generators are compared to other wind turbine generator systems. READ MORE

  2. 22. Physico-chemical characteristics and quantitative structure-activity relationships of PCBs

    Author : Patrik Andersson; Stephen Safe; Umeå universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; polychlorinated biphenyls; PCBs; physico-chemical properties; statistical design; multivariate; PCA; PLS; biomagnification; BMF; bioassay; CYP1A; SAR; QSAR; REPs; risk assessment; Chemistry; Kemi; Chemistry; Kemi;

    Abstract : The polychlorinated biphenyls (PCBs) comprise a group of 209 congeners varying in the number of chlorine atoms and substitution patterns. These compounds tend to be biomagnified in foodwebs and have been shown to induce an array of effects in exposed organisms. READ MORE

  3. 23. Grouting of Fractured Rock with Silica Sol; Grouting design based on penetration length

    Author : Johan Funehag; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grouting; hydraulic test; sand column; propagation; penetration length; pipe flow; aperture; transmissivity; colloidal silica; silica sol; rheology; gelling liquids; field study;

    Abstract : ABSTRACTRecent grouting projects in Sweden have concentrated on the grout itself. The only grout normally used in Sweden is cement-based. During the past 10 years, the acceptable flow of water into tunnels has been reduced significantly. The current requirements mean that an average fracture aperture of around 0. READ MORE

  4. 24. Economic aspects of infertility treatment

    Author : Maria Granberg; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Keywords : ART; health economy; financing; willingness to pay; cost; cost effectiveness; infertility treatment; IVF; ICSI; donor insemination; polycystic ovary syndrome PCOS ; tubal surgery;

    Abstract : Background: With the expansion of IVF into general clinical practise during the 1980's and 1990's, the interest to identify and compare costs of different infertility treatments increased and, in many countries there is an ongoing debate about whether or not in vitro fertilisation (IVF) and other assisted reproductive techniques (ART) should be covered by national health insurance schemes. Objective: The aim of the present study was to examine aspects of cost in relation to effectiveness and benefits of infertility treatment, with particular emphasis on in-vitro fertilisation. READ MORE

  5. 25. Grouting of Hard Rock with Gelling Liquids, Field and Laboratory Studies of Silica sol

    Author : Johan Funehag; Chalmers University of Technology; []
    Keywords : aperture; penetration length; gelling liquids; field study; silica sol; colloidal silica; Grouting; propagation; hydraulic test; sand column; rheology; transmissivity;

    Abstract : Recent grouting projects in Sweden have concentrated on the grout itself. The only grout normally used in Sweden is a cement-based one. During the past 10 years, the acceptable flow of water into tunnels has been significantly reduced. The current requirements mean that an average fracture aperture of around 0. READ MORE