Sökning: "Power factor correction"

Visar resultat 11 - 15 av 20 uppsatser innehållade orden Power factor correction.

  1. 11. Measurements and simulations of the performance of the PV systems at the University of Gävle

    Magister-uppsats, Högskolan i Gävle/Energisystem

    Författare :Laura Zabala Urrutia; [2017]
    Nyckelord :PV; PVperformance; PVPowerModel; CorrectionFactors; AngleofIncidence; Irradiation; Renewable Energy;

    Sammanfattning : In the following years, the countries will have to face an increase in the energy demand. So far, the fossil fuels have been the main source to meet the energy demand, but they involve serious problems: they contribute to the climate change with high emissions of greenhouse gases, there is an uneven distribution of these resources and their reserves are finite. LÄS MER

  3. 12. Evaluation of power quality and common design concept for AC-DC converters in aircraft

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Andreas Brolund; [2017]
    Nyckelord :AC-DC; converter; aircraft; power electronics; MOSFET; MEA; More electric aircraft; Delta-switch; ATRU; Auto-transformer rectifier unit; Auto-transformer; Vienna rectifier; passive rectifier; active rectifier; power factor correction; APFC; PFC; MATLAB; Simulink; THD; total harmonic distortion;

    Sammanfattning : This master thesis has been carried out in collaboration with Saab, Avionics Systems in Jönköping, Sweden, during the spring of 2017. The thesis investigates unidirectional rectifier topologies in aircraft and the focus has been on evaluating the power quality requirements according to the aircraft standards, in the course of the More Electric Aircraft concept. LÄS MER

  4. 13. PFC-design for frequency converter

    Master-uppsats, Linköpings universitet/Fysik och elektroteknik; Linköpings universitet/Tekniska högskolan

    Författare :David Kantzon; [2015]
    Nyckelord :;

    Sammanfattning : This thesis deals with power factor correction for three-phase systems. A boost-buck topology was described, modeled and then simulated in MATLAB/Simulink. The simulation results show that the system provides a power factor over 99% over the tested power output range. LÄS MER

  5. 14. Theoretical Design of a Single Phase 2kW Power Supply with 1.5kV DC Output

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Per Mossadeghi Björklund; [2014]
    Nyckelord :;

    Sammanfattning : This 15hp degree project in electrical engineering is carried out at ScandiNova Systems AB in Uppsala, Sweden. The company constructs pulse generators used in areas such as sterilization or radiation therapy. LÄS MER

  7. 15. Energy Audit of Mauritian Industries

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :chandrasekar bootun; [2014]
    Nyckelord :;

    Sammanfattning : Abstract Three companies namely Esko & Co Ltd, Cuttings Work Ltd and The Message Ltd were targeted for the purpose of this project study. The first one is Esko & Co Ltd. The company has diversified its production activities to produce sweets, bubble gums, chocolates, wafers and noodles both for the local market and export purposes. LÄS MER