Sökning: "Permanent magnets"

Visar resultat 1 - 5 av 35 uppsatser innehållade orden Permanent magnets.

  1. 1. Performance analysis of motor for electric aviation

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Torkel Svenson Hagström; [2020]
    Nyckelord :;

    Sammanfattning : With a rising interest and improving technology regarding electric aviation, the Swedish ELISE-project aims to built a functional 21-seated electric aircraft by the year 2025. The aim of this thesis is to analyze the performance of a scalable model of an electric motor optimized for aircraft, in terms of magnetic leakage flux, generated back-EMF, torque constant and efficiency. LÄS MER

  2. 2. Development of Tactile Actuators : Actuators for arm mounted hearing device

    Master-uppsats, Karlstads universitet

    Författare :Carl Broström; [2020]
    Nyckelord :;

    Sammanfattning : This report is a thesis work for a Master of Science in Mechanical Engineering at Karlstad University. More than 8.5 million people in the world are deaf but unable to get cochlear implants. It has been shown that by the use of actuators that stimulate the skin nerves in different patterns, people can learn to feel the sound on their skin. LÄS MER

  3. 3. Design of a Permanent Magnet Synchronous Generator with Alnico Magnets

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Fausto Lopez Gomez Partida; [2019]
    Nyckelord :Permanent magnets; Permanent magnet synchronous generator; Alnico;

    Sammanfattning : Following the trends to diminish the fossil fuel energy production new technologies known for their renewable sources have become a signficant option for helping combat climate change and handle the current oil prices. These new technologies base their power production on already established physical principles that convert mechanical power to electrical power. LÄS MER

  4. 4. Konstruktion av pedagogisk Borstlös DC-motor för undervisning

    M1-uppsats, Uppsala universitet/Elektricitetslära; Uppsala universitet/Elektricitetslära

    Författare :Oscar Söderlund; Johan Nyström; [2019]
    Nyckelord :;

    Sammanfattning : The brushless DC (BLDC) motor is a crucial component of our modern society and exists in a number of everyday items. It is an evolution of the conventional brushed DC motor. It has several advantages compared to the brushed DC motor including less maintenance and better control and precision of the rotary displacement. LÄS MER

  5. 5. End-Of-Life Wind Turbines in the EU : An Estimation of the NdFeB-Magnets and Containing Rare Earth Elements in the Anthropogenic Stock of Germany and Denmark

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Lisa Welzel; [2019]
    Nyckelord :rare earth elements; neodymium; dysprosium; wind turbines; permanent magnets; recycling; recovery; closing the loop; urban mining; sustainability; sällsynta jordartsmetaller; neodymium; dysprosium; vindturbiner; permanenta magneter; återvinning; cirkulärt system; hållbarhet;

    Sammanfattning : Securing rare earth elements (REE) for a stable supply require sustainable management strategies in Europe due to a missing local primary production and a dependence on China as the main producer of REE. These elements, like neodymium (Nd) and dysprosium (Dy), are contained in permanent magnets (PM) (mostly NdFeB-magnets) in wind turbines. LÄS MER