Sökning: "ferrite permanent magnets"

Visar resultat 6 - 9 av 9 uppsatser innehållade orden ferrite permanent magnets.

  1. 6. Design and Analysis of a Fractional-Slot Concentrated-Wound Permanent-Magnet-Assisted Synchronous Reluctance Machine

    Uppsats för yrkesexamina på avancerad nivå, KTH/Elektrisk energiomvandling

    Författare :Celia Carvajal Almendros; [2015]
    Nyckelord :Demagnetization; finite element method; flux-weakening; fractional slot concentrated winding; overload capability; permanent magnet assisted synchronous reluctance machine; torque ripple; Avmagnetisering; finita elementmetoden; fältförsvagning; koncentrerade lindningar; momentrippel; permanentmagnetassisterad synkron reluktansmaskin; överbelastningskapacitet;

    Sammanfattning : The growing need for simpler and cheaper manufacturing process has led to the research into fractional-slot concentrated-wound (FSCW) motors. This concept has been widely investigated for surface-mounted permanent magnet (SMPM) machines. This thesis studies the same concept applied for synchronous reluctance machines (SynRM). LÄS MER

  3. 7. PROCESSUTVECKLING FÖR JÄRNBASERADE HÅRDMAGNETISKA PULVER UTAN SÄLLSYNTA JORDARTSMETALLER

    Master-uppsats, Lunds universitet/Materialteknik

    Författare :Per-Olof Andersson; [2014]
    Nyckelord :Crystalline metals; Magnetic materials; Hard magnetic materials; Electro-magnetic applications; Single crystalline powder; Powder metallurgy; Fe2B; FeB; Water atomization; Gas Water atomization; non-RE hard magnetic material.; Technology and Engineering;

    Sammanfattning : An experimental study was performed, aimed at finding a way to produce single crystalline powder of pure (Fe0.7Co0.3)2B with a particle size of 100-200nm. This was done with the ultimate goal of producing a hard magnetic ferrite powder for powder metallurgical production of permanent magnets. LÄS MER

  4. 8. Design of a Ferrite Permanent Magnet Rotor for a Wind Power Generator

    Uppsats för yrkesexamina på avancerad nivå, Elektricitetslära

    Författare :Petter Eklund; [2013]
    Nyckelord :generator design; ferrite permanent magnets; wind power;

    Sammanfattning : Due to the insecurity of the supply of raw materials needed for neodymium-iron-boron magnets, typically used in permanent magnet generators, the use of ferrite magnets as an alternative was investigated. The investigation was conducted by attempting to redesign a generator that previously used neodymium-iron-boron magnets for use with ferrite magnets. LÄS MER

  5. 9. Optimization of Line Start Permanent Magnet Synchronous Motor for Magnet Cost Reduction

    Master-uppsats, KTH/Elektrisk energiomvandling

    Författare :Amit Kumar Jha; [2012]
    Nyckelord :Line start reluctance motor; LSPM; magnet assisted reluctance motor; Magnet volume reduction; Optimization of LSPM;

    Sammanfattning : In this thesis different methods of optimizing line start permanent magnet motor (LSPM) for magnet cost reduction is studied. Influence of different parameters has been studied by simulating magneto-static and transient FEM models of the machine. Finally a motor design of a LSPM with high rotor saliency has been proposed. LÄS MER