Sökning: "resonant converters"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden resonant converters.

  1. 1. Analysis of high-voltage low-current DC/DC converters for electrohydrodynamic pumps

    Kandidat-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Sigge Axelsson; Jonas Gartner; Axel Stafström; [2023]
    Nyckelord :high-voltage; low-current; low-power; DC DC; DC-DC; high-gain; converter; electrohydrodynamic pump; EHD; transformerless converter; Royer-based converter; resonant Royer oscillator; Cockroft-Walton voltage multiplier; CWVM; voltage multiplier; series-connected positive-negative voltage multiplier; SPNVM; planar air-core transformer; planar transformer; high-freqency Royer-based converter; overcurrent protection; LT8331; gallium nitride; GaN; planar PCB-integrated transformers;

    Sammanfattning : Moving parts cause vibrations and tend to wear out. In applications where maintenance is complicated, solutions without moving parts are therefore advantageous. Electrohydrodynamic pumps are such a solution. Instead of mechanical propulsion, they use strong electric fields to induce movement in a dielectric cooling liquid. LÄS MER

  3. 2. Design and Simulation of a 10kW High-Efficiency Dual Active Bridge Converter

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Fan Yang; [2023]
    Nyckelord :Converter Design; Dual Active Bridge; Single Phase Shift Modulation; Extended Phase Shift Modulation; Efficiency Estimation; Konverterdesign; Dual Active Bridge; Single Fas Shift Modulation; Extended Phase Shift Modulation; Effektivitetsuppskattning;

    Sammanfattning : The EU has proposed an ambitious goal to achieve widespread E-mobility in both the electrical and commercial sectors. To accomplish this, a substantial number of DC fast-charging stations must be built. LÄS MER

  4. 3. Closed-loop control and data- recording of a modular-multilevel converter (MMC)

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Longgang Su; [2022]
    Nyckelord :Modular multilevel converters MMCs ; filed programmable gate array FPGA ; direct memory access DMA ; energy closed-loop control; data recording; ethernet.; Modulära multilevel-omvandlare MMC ; filed programmeable gate array FPGA ; direkt minnesåtkomst DMA ; energistyrning med sluten slinga; datainspelning; ethernet.;

    Sammanfattning : Modular multilevel converters (MMCs) are the preferred converter solution in flexible ac transmission systems (FACTS) and high-voltage direct current (HVDC) applications. This is due to the high quality of the voltage and current signals, lower overall losses, and fewer problems with switching-related EMI. LÄS MER

  5. 4. Comparison of control strategies for Peltonturbines in Wave Energy Converters

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :PHILIP HAMILTON; ANDREAS SJÖGREN; [2021]
    Nyckelord :Permanent Magnet Synchronous Generator; Synchronous Motor; Wave Energy Converter; Pelton Turbine; Velocity Control Strategies; Dead-time Strategies; Cascaded Control; Permanentmagnetgenerator; Synkrongenerator; Synkronmotor; Vågenergiomvandlare; Peltonturbin; Hastighetskontrollstrategier; Mellantidsstrategier; Kaskadreglering;

    Sammanfattning : Wave energy is a promising renewable resource with a higher energy density than both wind and solar. Waves can travel thousands of kilometers with minimal energy loss, making them more reliable than the previously mentioned alternatives. A device that utilizes wave energy to generate electricity is calleda Wave Energy Converter. LÄS MER

  7. 5. 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