Sökning: "överbelastningskapacitet"

Hittade 2 uppsatser innehållade ordet överbelastningskapacitet.

1. 1. 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. 2. Experimental Transient Behaviour Characterisation of Induction Motor fed by Variable Frequency Drives for Pump Applications

   Uppsats för yrkesexamina på avancerad nivå, KTH/Elektrisk energiomvandling

   Författare :Amer Halilovic; [2014]
   Nyckelord :Variable Frequency Drive; Centrifugal Pump; Induction Motor; Volts-per-Hertz Control; Speed Control; Overdimensioning; Frekvensomriktare; centrifugalpump; asynkronmotor; skalärkontroll; hastighetskontroll; överdimensionering;

   Sammanfattning : The use of variable frequency drives in centrifugal pump applications has raised the question of how to select a drive. Clogging obstacles in waste water applications create unknown transient loads for the pump system. A sudden load increase occurrence can clog the pump if the drive cannot supply enough current to reach the motor’s torque demand. LÄS MER