Search for dissertations about: "breakdown strength"

Showing result 1 - 5 of 55 swedish dissertations containing the words breakdown strength.

  2. 1. Electric breakdown strength of aromatic polymers

    Author : Peter Bjellheim; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : .... READ MORE

  4. 2. Microwave Breakdown in Inhomogeneous Fields

    Author : Joel Rasch; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; corona; inhomogeneous fields; Microwave breakdown; multipactor;

    Abstract : Microwave breakdown continues to be a risk in many applications involving the transmission and reception of microwave frequency signals. Satellite communication is especially interesting from the research point of view because of the extreme costs, and limited testing possibilities. READ MORE

  5. 3. Mechanisms of Electrical Ageing of Oilimpregnated Paper due to Partial Discharges

    Author : Mohamad Ghaffarian Niasar; Hans Edin; Ernst Gockenback; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; partial discharges; oil-impregnated paper; oil; transformer insulation; dielectric frequency response; breakdown strength; ion mobility; thermal ageing; electrical ageing; moisture in paper; life time; thermal breakdown.; Electrical Engineering; Elektro- och systemteknik;

    Abstract : In this thesis, partial discharge (PD) phenomenon in oil-impregnated paper (OIP) is investigated under accelerated electrical stress. The thesis is mainly focused on the characteristic of PD activity and the influence it has on the insulation properties of OIP. READ MORE

  6. 4. Electrical Insulating Properties of Poly(Ethylene-co-Butyl Acrylate) Filled with Alumina Nanoparticles

    Author : Nadejda Jäverberg; Hans Edin; John Fothergill; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanocomposites; poly ethylene-co-butyl acrylate ; EBA; alumina; dielectric permittivity; absorbed water; humidity; temperature; dielectric spectroscopy; breakdown strength; pre-breakdown current;

    Abstract : In this work the electrical insulating properties of the nanocomposite materials based on poly(ethylene-co-butyl acrylate) filled with alumina nanoparticles are studied. The dielectric properties chosen for the evaluation are the dielectric permittivity and loss as well as the breakdown strength and the pre-breakdown currents. READ MORE

  7. 5. Active insulation : possibilities of utilizing free charges in air

    Author : Mats Sjöberg; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; capacitively coupled discharge; charge accumulation; breakdown mechanism; dielectric covered structures; electric field homogenization; active insulation; dynamic charging; microdischarge; dielectric barrier discharge; dielectric breakdown strength; electric field reduction; space charge; air gaps; surface charge;

    Abstract : .... READ MORE