Sökning: "Active rectifier"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden Active rectifier.

  1. 1. Analysis Of A Wave Power System With Passive And Active Rectification

    Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Ferdus Wahid; [2020]
    Nyckelord :WEC; Optimal damping coefficient; Power smoothing; Passive rectifier; Active rectifier; Buck converter; Bi-directional DC-DC converter; Flywheel; Battery; Bi-directional voltage source converter; Voltage source inverter;

    Sammanfattning : Wave energy converter (WEC) harnesses energy from the ocean to produce electrical power. The electrical power produced by the WEC is fluctuating and is not maximized as well, due to the varying ocean conditions. As a consequence, without any intermediate power conversion stage, the output power from the WEC can not be fed into the grid. LÄS MER

  3. 2. Isolated Single-Stage Interleave Resonant PFC Rectifier with Active and Novel Passive Output Ripple Cancellation Circuit

    Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Abidemi Oluremilekun Eleyele; [2020]
    Nyckelord :single-stage AC DC converter; bridgeless power factor correction PFC rectifier; active passive ripple cancellation; zero current switching ZCS ; zero voltage switching ZVS ; Electric vehicle EV charger; LLC;

    Sammanfattning : With the increasing demand for fast, cheaper, and efficient power converters come the need for a single-stage power factor correction (PFC) converter. Various single-stage PFC converter proposed in the literature has the drawback of high DC bus voltage at the input side and together with the shift to wide bandgap switches like GaN drives the converter cost higher. LÄS MER

  4. 3. Construction of an Active Rectifier for a Transverse-Flux Wave Power Generator

    Master-uppsats, KTH/Elkraftteknik

    Författare :Olof Brandt Lundqvist; [2017]
    Nyckelord :;

    Sammanfattning : Wave power is an energy source which could make a decisive difference in thetransition towards a more sustainable energy sector. The growth of wave powerproduction has however not been as rapid as the growth in other renewableenergy fields, such as wind power and solar power. LÄS MER

  5. 4. 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

  7. 5. 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