Search for dissertations about: "Per Karlsson"

Showing result 1 - 5 of 111 swedish dissertations containing the words Per Karlsson.

  2. 1. DC Distributed Power Systems - Analysis, Design and Control for a Renewable Energy System

    Author : Per Karlsson; Industriell elektroteknik och automation; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energiforskning; fault detection; load sharing; wind power; DC distributed power system; voltage control; Energy research; Elektronik och elektroteknik; VSC; Electronics and Electrical technology;

    Abstract : Renewable energy systems are likely to become wide spread in the future due to environmental demands. As a consequence of the dispersed nature of renewable energy systems, this implies that there will be a distributed generation of electric power. READ MORE

  4. 2. Quasi Resonant DC Link Converters - Analysis and Design for a battery Charger Application

    Author : Per Karlsson; Industriell elektroteknik och automation; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; quasi resonant DC link converter; soft switching; converter efficiency; IGBT; battery charger;

    Abstract : Environmental aspects have during the last years made electric vehicles an interesting competitor to the present internal combustion engine driven vehicles. For a broad introduction of pure electric vehicles, a battery charging infrastructure is deemed necessary. However, to build and maintain such an infrastructure is costly. READ MORE

  5. 3. High consistency hydrogen peroxide bleaching of Norway spruce mechanical pulps

    Author : Anette Karlsson; Per Engstrand; Mittuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; Kemiteknik;

    Abstract : .... READ MORE

  6. 4. Gap discharge transducers applied to ultrasonic flow measurement

    Author : Kristoffer Karlsson; Per Lunde; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industriell elektronik; Industrial Electronics;

    Abstract : In this thesis, the potential of the gap discharge transducer is investigated as both a sound pulse emitter and a sound pulse receiver in a gas flow measurement setup. The main objective is to use the gap discharge transducer as an integral part in a gas flow measurement system developed for harsh environments. READ MORE

  7. 5. Health problems and work-related stress in Swedish ambulance personnel

    Author : Kåre Karlsson; Lennart Christensson; Anders Jonsson; Lars Lundberg; Jan Mårtensson; Per-Olof Michel; Jönköping University; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; work-related stress; ambulance personnel; cortisol; heart rate;

    Abstract : Background: Previous studies have shown a high incidence of both acute and post-traumatic stress among ambulance personnel. It has been shown that ambulance personnel are at a higher risk of being affected of heart disease, high blood pressure and cancer. Studies have also seen a higher incidence of substance abuse and suicide. READ MORE