Search for dissertations about: "dielectric barrier discharge"

Showing result 1 - 5 of 7 swedish dissertations containing the words dielectric barrier discharge.

  1. 1. Charge Accumulation in Hybrid High Voltage Insulation

    Author : Mats Sjöberg; Chalmers University of Technology; []
    Keywords : dielectric barrier; charge accumulation; high voltage; dielectric barrier discharge; dielectric coating; hybrid insulation; electric field distribution; discharge modelling; breakdown strength; charge conditioning;

    Abstract : This thesis deals with the novel idea of controlling the electric stress or field distribution in a hybrid air - solid-dielectric high voltage insulation by promoting accumulation of surface charges on the internal interfacial layers in the combined (hybrid) dielectric structure. Primarily, applications are expected to be found in high voltage dc systems and as a method to improve the resistance against insulation failure by overvoltages, e. READ MORE

  2. 2. Active insulation : possibilities of utilizing free charges in air

    Author : Mats Sjöberg; Chalmers University of Technology; []
    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

  3. 3. Computational framework for studying charge transport in high-voltage gas-insulated systems

    Author : Shailendra Singh; Chalmers University of Technology; []
    Keywords : NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; barrier discharge; low temperature plasma; drift diffusion equation; gaseous dielectrics; gas discharge; streamer propagation; high voltage;

    Abstract : Electrical switchgear industry dealing with transmission and distribution of power is strongly affected by the changing dynamics of climate control. Their main contribution to the global warming is through SF6 gas, having a GWP of 23500 (times of CO2). SF6 plays an important role in providing electrical insulation for these high voltage systems. READ MORE

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

    Author : Jörgen Blennow; Chalmers University of Technology; []
    Keywords : 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

  5. 5. Numerical modeling of pulsed volume discharges for the generation of ozone

    Author : J. Olof Nilsson; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Kinetic modeling; ozone production; parameterstudy; pulsed discharge;

    Abstract : The pulsed electric volume discharge is a new alternativefor the efficient generation of ozone in compact systems. Thisthesis presents a parameter study of the reactions in this kindof homogeneous discharge, using a here developed numericalmodel DISCHEM which solves plasma chemical kinetic rate andenergy equations. READ MORE