Sökning: "dc-dc converters"

Visar resultat 1 - 5 av 42 uppsatser innehållade orden dc-dc 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. Analysis of a high step-up gain DC-DC converter for fuel cell and battery application

   Kandidat-uppsats, Uppsala universitet/Institutionen för elektroteknik

   Författare :Kaj Törngren Sato; [2023]
   Nyckelord :Fuel cell; High step-up DC-DC converter; Boost converter; Coupled inductors; Coupling factor; CCM; DCM; Duty cycle;

   Sammanfattning : In sustainable energy systems those using fuel cells, high step-up gain converters are widely used to increase the output voltage to levels that can be used by other converters, such as inverters for grid connection or powering other AC loads. In order to obtain a higher voltage gain, in comparison to a traditional boost converter, often different topologies techniques are involved. LÄS MER

4. 3. Spänningsomvandlare - med multipla utgångar och med fokus på minimering av EMI

   M1-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

   Författare :Miranda Skistad; Jacob Larsson; [2023]
   Nyckelord :EMC; EMI; Filter; Spänningsomvandling; Strömförsörjning; DC DC; AC DC;

   Sammanfattning : Arbetet med att konstruera en spänningsomvandlare med multipla utgångar med fokus på minimering av EMI har gjorts på TEMPEST Center Combitech i Växjö. Detta för att känslig mätutrustning behöver strömförsörjas utan att samtidigt påverka mätobjekten. LÄS MER

5. 4. 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

7. 5. Design and Control of Bidirectional Converters for DC Microgrids

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

   Författare :Gustav Eckerbom; Villiam Petermann; [2023]
   Nyckelord :;

   Sammanfattning : This study aims to summarize the design of two common types of bidirectional DC-DC convertersfound in microgrids, as well as use two distinct control methods for each converter and validate theirperformance. Microgrids are decentralized, small-scale power systems that can operateindependently of the main power grid and are an important solution in order to integrate moreintermittent energy sources, such as solar and wind power, into the energy mix. LÄS MER