Sökning: "Breakdown Voltage"

Visar resultat 1 - 5 av 37 uppsatser innehållade orden Breakdown Voltage.

  1. 1. Tribological characterization of a ball bearing subjected to an electric field : Electric drivetrain tribology

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Muhammad Umar Farooq; [2023]
    Nyckelord :Ball bearing; electric drivetrain; tribology; electric field; characterization; bearing currents; discharge;

    Sammanfattning : Electric machines are widely used in for instance the automotive industry in electric vehicles and in wind turbines. The electrical machines have mechanical bearings as an integral part used to transmit power and load. In addition, the main function includes reducing friction between interacting surfaces. LÄS MER

  3. 2. Discharge and Flame Chemistry in Lithium-Ion Battery Vent Gases : Investigations using Breakdown Experiments with Laser-Based Diagnostics

    Master-uppsats, Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

    Författare :Julia Lövgren; [2023]
    Nyckelord :PLIF; Laser-induced fluorescence; Laser-based diagnostics; Combustion; Lithium-ion battery; Physics and Astronomy;

    Sammanfattning : Due to the environmental impact of fossil fuels, there has been a growing interest in lithium-ion batteries for electric vehicles. However, safety concerns have arisen regarding potential fire hazards associated with the vent gases of these batteries. LÄS MER

  4. 3. Investigation of MIDEL 7131’s Dielectric Breakdown Strength and Thermal Behaviour : Master Thesis, an experimental study using concentric-like electrodes at elevated temperatures to study breakdowns

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Kim Lin; [2023]
    Nyckelord :Dielectric strength; High voltage; Liquid dielectric; MIDEL 7131; Electrical breakdown; Temperature cycle; Dielektrisk styrka; Högspänning; Dielektriska vätskor; MIDEL 7131; Elektrisk nedbrytning; Temperaturcykling;

    Sammanfattning : Dielectric insulation are constantly exposed to various stresses, while also being expected to last for long periods of time. Naturally, they degrade with use and in demanding operational environments, this degradation phenomena can be accelerated, leading to costly consequences. LÄS MER

  5. 4. Fabrication of sub-10 nm solid-state nanopores by electrical breakdown

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Kasumi Tsutsumi; [2023]
    Nyckelord :Nanopore fabrication; Solid-state material; Silicon nitride; Graphene; DNA translocation; Nanopor-avkänning; fast tillståndsmaterial; kiselnitrid; grafen; DNA-translokation;

    Sammanfattning : Nanopore sensing is a versatile technique that employs very small openings, known as nanopores, to study biomolecules. The use of nanopores on solid-state membranes has gained attention due to its potential for low-cost and high-throughput sensing of single molecules in liquids. LÄS MER

  7. 5. Electrical Discharge Interaction with Lithium-Ion Battery Vent Gases: Investigations using High-Speed Imaging and Breakdown Analysis

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Alexander Petersson; [2023]
    Nyckelord :Electrical Discharge; Electrical Arc; Spark Discharge; Combustion; Ignition; Lithium-Ion Battery; Thermal Runaway; Vent Gases; Breakdown Voltage; Ionization; High-Speed Imaging; Technology and Engineering; Chemistry;

    Sammanfattning : The increasing drive for sustainable and eco-friendly transportation has made the electrification of cars a top priority in the energy and transportation sectors. Ensuring the safety of electrical vehicle (EV) batteries is of the utmost importance. LÄS MER