Sökning: "effektfaktor"

Visar resultat 6 - 10 av 19 uppsatser innehållade ordet effektfaktor.

  1. 6. 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

  3. 7. A case study on improving energy efficiency of a Granulator in the polythene recycling machine

    Master-uppsats, KTH/Energiteknik

    Författare :Raveendra Sampath Kumara Sarukkali Kankanamge; [2018]
    Nyckelord :;

    Sammanfattning : The thesis focuses on the improvement/enhancement of energy efficiency of the machine; called Granu-lator of the recycling process of polythene. In the recycling process, it is observed that energy is wasted unnecessarily, and thus energy efficiency must be improved. The reason is that the granulator has been operating with an old rotor. LÄS MER

  4. 8. The potential of residentialdemand response to reduce lossesin an urban low-voltagedistribution grid

    Master-uppsats, KTH/Elkraftteknik

    Författare :Reinout Daels; [2017]
    Nyckelord :demand response; smart distribution grid; power loss; DSO;

    Sammanfattning : Demand response (DR) has been widely documented as a potential solution for severalchallenges the electrical power system is facing, such as the integration of intermittentrenewable electricity generation and maintaining system reliability undera rapid, global electrification. While l ots of r esearch has been done i nto differentmarket designs and tariffing methods, less work is available on the implications ofdemand response on power grid operation, especially for the low voltage side. LÄS MER

  5. 9. Power Electronic Stages for a TFPMSM in Wave Power Applications

    Master-uppsats, KTH/Skolan för elektro- och systemteknik (EES)

    Författare :Gustaf Falk Olson; [2016]
    Nyckelord :transverse flux permanent magnet synchronous machine TFPMSM ; active rectifier; direct drive wave energy converter; feedback linearization; cascaded PID controller.;

    Sammanfattning : Direct drive wave energy conversion systems have been identified as a potentially major contributor to the world’s energy demands, forecasting shares of up to 25 % of the energy mix. Anders Hagnestål conducts research at the Royal Institute of Technology where a novel linear transverse flux permanent magnet generator is developed. LÄS MER

  7. 10. Kartläggning av problem inom småskalig vattenkraft och faskompensering av asynkrongenerator i ett vattenkraftverk

    Uppsats för yrkesexamina på grundnivå, Högskolan Väst/Avdelningen för data-, elektro- och lantmäteriteknik

    Författare :Emil Nilsson; Erik Persson; Pontus Nevanperä; [2016]
    Nyckelord :vattenkraftsstationer; driftsstörningar; asynkrongeneratorer; småskalig vattenkraft; kondensatorbatteri;

    Sammanfattning : I rapportens första del behandlas vad som orsakar omfattande driftstörningar och krav från nätägare som ställs på mindre vattenkraftsstationer med asynkrongeneratorer. Det gjordes med hjälp av en enkätundersökning som skickades ut till ett antal medlemmar i Svensk vattenkraftsförening (SVAF). LÄS MER