Sökning: "permanent magnet machine"

Visar resultat 11 - 15 av 55 avhandlingar innehållade orden permanent magnet machine.

  1. 11. Permanent Magnet Machines with Air Gap Windings and Integrated Teeth Windings

    Författare :Mikael C D Alatalo; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; permanent magnets; NdFeB; special windings; iron powder; synchronous machines;

    Sammanfattning : The thesis deals with axial and radial flux permanent magnet machines with air gap windings and an integrated teeth winding. The aim is to develop a machine that produces a high torque per unit volume with as low losses as possible. LÄS MER

  3. 12. On the System Optimization of Magnetic Circuit with Alternative Permanent Magnets and its Demagnetization

    Författare :Jonathan Sjölund; Sandra Eriksson; Leijon Mats; Sami Ruoho; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Permanent magnet machines; Finite element method; ferrite permanent magnets; linear machines; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Permanent magnet (PM) machines are often associated with the usage of rare earth magnets, due to their high energy density. One such rare earth magnet is the neodymium-iron-boron (NdFeB), which is mainly produced in China. Due to the global scarcity of the rare earth magnets, much interest is put into utilizing other permanent magnet materials. LÄS MER

  4. 13. Design of transverse flux machines using analytical calculations&finite element Analysis

    Författare :Peethamparam Anpalahan; KTH; []
    Nyckelord :Transverse Flux Machine; Power factor; Torque density; Analytical Model; Magnetic powder; Permanent Magnet; Finite Element Analysis;

    Sammanfattning : .... LÄS MER

  5. 14. Permanent magnet motor drives with switched stator windings

    Författare :Eckart Nipp; KTH; []
    Nyckelord :;

    Sammanfattning : Permanent magnet (PM) motors aretoday regarded as aninteresting solution for a wide range ofinverter-fedvariable-speed drives. The generally increasedinterest in these motors hasled to many investigations on theirfeasibility for vehicle propulsion. LÄS MER

  7. 15. On design and analysis of synchronous permanent magnet machines for field-weakening operation in hybrid electric vehicles

    Författare :Freddy Magnussen; Chandur Sadarangani; Barrie Mecrow; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Applied mechanics; permanent magnet machines; field-weakening; hybrid electric vehicles; soft magnetic composites; fractional pitch concentrated windings; Teknisk mekanik; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : A regular vehicle of today is equipped with an internal combustion engine that runs on either gasoline or diesel, which are fossil fuels from oil reserves that are millions of years old. In all types of combustion processes carbon dioxide and several other emissions are produced. LÄS MER