Sökning: "Permanent magnets"

Visar resultat 11 - 15 av 50 uppsatser innehållade orden Permanent magnets.

  1. 11. Magnetic Moment Characterization for Small Satellites

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Alejandro Sans Monguiló; [2021]
    Nyckelord :small satellite; CubeSat; optical magnetic test bed; magnetic dipole moment characterization; residual magnetic moment; permanent magnet verification; magnetic measurement; Foresail-1; Helmholtz cage;

    Sammanfattning : Small satellites are gaining popularity in a wide range of applications where attitude systems require high precision performance. One of the main sources of errors, in case of magnetic attitude control systems, is the residual magnetic moment (RMM) of the spacecraft. LÄS MER

  3. 12. Cooling simulation of a BEV electrical machine rotor

    Master-uppsats, KTH/Fordonsdynamik

    Författare :Lisa Sparv; [2021]
    Nyckelord :Electrical machine; Rotor cooling; Permanent magnet; Simulation; STAR-CCM ; Elmaskin; Rotorkylning; Permanentmagnet; Simulering; STAR-CCM ;

    Sammanfattning : The thesis work described in this report is about simulation of the cooling of an electrical machine rotor. Limitations and simplifications were made on the CAD model of the rotor with the purpose of reducing the simulation time, for it to then be used for CFD-simulations using STAR-CCM+. LÄS MER

  4. 13. Evaluation of a Switched Reluctance Machine in an Automotive Oil Pump Application

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Industriell elektroteknik och automation

    Författare :Edvin Malm; August Wahlberg; [2021]
    Nyckelord :SRM; Switched Reluctance Machine; Instantaneous Torque Control; Average Torque Control; Flux Based Position Estimation; Sensorless; 4 2 asymmetric SRM; Technology and Engineering;

    Sammanfattning : A Switched Reluctance Machine (SRM) is evaluated in terms of torque quality and speed ripple for a particular pump application. The aim is to give BorgWarner insight into the control methodology and possible applications for a Switched Reluctance Machine. LÄS MER

  5. 14. Design of Optical Magnetic Systems for Terahertz Lensing

    Kandidat-uppsats, Uppsala universitet/FREIA

    Författare :Gustav Lidberg; Karl Pontén; Johan Millberg; [2021]
    Nyckelord :Terahertz; Graphene; Optics; Magnets; Optical Magnetic Lens;

    Sammanfattning : When graphene is subjected to magnetic fields, it can be used as an optical device with light in the terahertz region. The functionality of the graphene depends on which magnetic field profile is influencing it. In this project, magnet configurations producing uniform and quadratic magnetic field profiles were studied. LÄS MER

  7. 15. 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