Search for dissertations about: "Jörgen Blennow"

Found 5 swedish dissertations containing the words Jörgen Blennow.

  2. 1. Active High Voltage Insulation - A New Hybrid Insulation Concept with Dynamic and Active Features

    Author : Jörgen Blennow; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; high voltage; surface charge; dielectric coating; charge accumulation; insulation; breakdown strength; covered electrodes; air-gap; dielectric barrier discharges;

    Abstract : In this thesis, the concept of a new environmental-friendly and high-performance high voltage insulation is presented. Basically, it is an electric field steering technique where the dynamic process of charge accumulation, actively and advantageously, re-distributes the electric field within an insulation system. READ MORE

  4. 2. Partial discharges detected by stator slot couplers

    Author : Jörgen Blennow; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PD; statistical analysis; attentuation; on-line; SSC; partial discharges; stator slot couplers; frequency spectrum; state estimation; pulse shape; stator winding model; distortion;

    Abstract : .... READ MORE

  5. 3. Direct Driven Generators for Vertical Axis Wind Turbines

    Author : Sandra Eriksson; Hans Bernhoff; Mats Leijon; Jörgen Blennow; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; synchronous generator; wind power; vertical axis wind turbine; simulations; experiments; finite element method; Engineering physics; Teknisk fysik;

    Abstract : Wind power is a renewable energy source that is increasingly used all over the world. Most wind turbines have a horizontal axis of rotation but a few have a vertical axis of rotation. The concept presented in this thesis is a straight-bladed vertical axis wind turbine with a direct driven cable-wound permanent magnet synchronous generator. READ MORE

  6. 4. The Effect of HV Impulses on Partial Discharge Activity and on the Dielectric Response in Oil-impregnated Paper Insulation

    Author : Respicius Clemence Kiiza; Hans Edin; Jörgen Blennow; KTH; []
    Keywords : Partial discharge; high voltage impulses; oil-impregnated paper; dielectric spectroscopy; Finite Element Method.;

    Abstract : This work investigates how HV impulses affect the behavior of partial discharge (PD) activity and the low voltage dielectric response of oil-impregnated paper insulation. It also investigates how the change in the PD activity is related to the degradation level of oil-impregnated paper insulation. READ MORE

  7. 5. Experimental results from the Lysekil Wave Power Research Site

    Author : Olle Svensson; Mats Leijon; Jörgen Blennow; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wave power; Lysekil; Marine Substation; Offshore measurement; strain gauge; lateral force; Invlination and azimuth angles; Wave energy converter; Temperature measurements; Inverter; Energy; Control sustem; CompactRIO; Vågkraft; Mätteknik; Styrsystem; Lysekil; Engineering Science; Teknisk fysik;

    Abstract : This thesis presents how experimental results, from wave power research performed offshore at the Lysekil research site, were obtained. The data were used to verify theoretical models as well as evaluate the feasibility of wave power as a future sustainable energy source. READ MORE