Sökning: "flux-weakening"

Hittade 2 uppsatser innehållade ordet flux-weakening.

1. 1. Impact of Converter Modulation Strategies on the Losses in a Traction Motor

   Uppsats för yrkesexamina på avancerad nivå, KTH/Elektrisk energiomvandling

   Författare :Emil Fjällström; [2015]
   Nyckelord :Induction Machine; FEM; FLUX; Induktionsmotor; FEM; FLUX;

   Sammanfattning : With an increased demand on high-efficiency electrical machines in traction applications, better understanding in the losses induced by the converter is needed. The harmonic losses from the converter are non-negligible part of the total losses in an induction machine, and these harmonic losses have been studied here with a focus on iron, skin-effect and proximity losses. LÄS MER

3. 2. 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