Sökning: "Permanent magnets"

Visar resultat 21 - 25 av 50 uppsatser innehållade orden Permanent magnets.

  1. 21. Investigation of the origin of stray radiation at XFEL using FLUKA

    Kandidat-uppsats, Stockholms universitet/Fysikum

    Författare :Terese Hellström; [2019]
    Nyckelord :;

    Sammanfattning : The European X-Ray Free-Electron Laser facility (XFEL) provides ultra-short x-ray pulsesof high peak brilliance that are used in research to analyse atomic or molecular structures.The facility accelerates electrons and moves them through an undulator system consistingof several undulator cells containing permanent magnet poles supplying an alternatingmagnetic field, which causes the electrons to emit x-ray pulses. LÄS MER

  3. 22. MAGNETIC CHARACTERIZATION OF SELF-ASSEMBLED ONE-DIMENSIONAL NETWORKS OF MAGNETIC NANOPARTICLES

    Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Mario Salvador López Muñoz; [2019]
    Nyckelord :Nanomagnetism; Stoner-Wohlfarth; Magnetite Fe3O4; nanoparticles; Magnetic Characterization; Spark Discharge Technique; Physics and Astronomy;

    Sammanfattning : In this thesis, a magnetic study of two dierent arrangements of Fe3O4 nanoparticles is presented. The nanoparticles are generated using an aerosol technique and guided onto a substrate. LÄS MER

  4. 23. Integrated generator for use in aircraft engines

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Fredrik Andersson; [2018]
    Nyckelord :Integrated generator; aircraft engine; generator; aircraft generator; Technology and Engineering;

    Sammanfattning : In this paper the use of integrated generators for airplane engines is examined. In order to accomplish this goal a combination of MatLab with FEMM and ANSYS Maxwell is used to make incrementally more and more detailed analysis of the integrated generator concept. LÄS MER

  5. 24. The Magnetic Characterization of Iron-Chrome nanoparticle

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

    Författare :Angga Virdian; [2018]
    Nyckelord :Nanomagnetism; Nanoparticle; Physics and Astronomy;

    Sammanfattning : In this thesis, the intrinsic magnetic characteristic of 10 nm FeCr oxide nanoparticles is studied. The nanoparticles is produced using the method of Spark discharge generation. Scanning electron microscope (SEM) is used to characterize the size distribution and coverage of deposited particle. LÄS MER

  7. 25. Design and comparison of PMaSynRM versus PMSM for pumping applications

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

    Författare :Viktor Briggner; [2018]
    Nyckelord :Demagnetization; economic evaluation; permanent magnet assistance; synchronous reluctance machine; Avmagnetisering; ekonomisk utv¨ardering; permanentmagnetassistans; synkron reuktansmaskin;

    Sammanfattning : This master thesis aimed to design a permanent magnet assisted synchronous reluctancemachine (PMaSynRM) rotor for pump applications which were to be implemented inan existing Induction Machine stator. The machine were to be compared with a similarpermanent magnet synchronous machine (PMSM) with similar torque production in termsof cost and performance. LÄS MER