Sökning: "DC-DC"

Visar resultat 16 - 20 av 88 uppsatser innehållade ordet DC-DC.

  1. 16. Life Cycle Assessment of Electric Road Systems - Climate impact in comparison with battery electric vehicles, biogas vehicles and fuel cell electric vehicles

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Miljö- och energisystem

    Författare :Ebba Söderström; Emanuel Bengtsson; [2022]
    Nyckelord :Electric road systems; Elonroad; life cycle assessment; rail; feed-in station; pick-up; on-board charger; climate impact; global warming potential; articulated lorry; lower medium car; bus; Technology and Engineering;

    Sammanfattning : One third of Sweden's total annual greenhouse gas emissions originate from the transport sector today and great changes are thus needed in order to reach the net zero emission target by 2045. One of the most important measures discussed is an increased electrification of the transport sector and a solution with potential to contribute to this transition is electric road systems (ERS), where vehicles are charged dynamically. LÄS MER

  3. 17. Simulation of a Battery Energy Storage System for Fast Frequency Reserve Support.

    Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Pathirage Dona Upekha Nimanthi Pathirage; [2022]
    Nyckelord :Energy Storage; Renewable Energy; Battery; Fast Frequency Reserve; Lithium-ion;

    Sammanfattning : Electricity providers has a growing interest in moving towards Renewable Energy Sources (RES) for power generation due to their attractive features. This has caused phasing out of coal, oil and nuclear power plants which use large synchronous generators for power production. LÄS MER

  4. 18. The local potential of V2G : Estimation of the benefits of Vehicle to Grid in the energy community of Stenberg

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

    Författare :Cyprien Drommi; [2022]
    Nyckelord :Vehicle to Grid; V2G; V2X; Electric vehicle; Energy community; Stenberg; Ancillary services; Frequency regulation; FCR; Energy arbitrage; Battery degradation; DC charging.; Vehicle to Grid; V2G; V2X; Elbilar; Elfordon; Energisamfälligheten; Stenberg; Stödtjänster; Frekvensbalancering; FCR; Energiarbitrage; Batteridegradering; Likströmsladdning.;

    Sammanfattning : In the countries willing to follow an energy transition towards decarbonization, a strong emphasis is put on electrification. Carbon-free power production tends to rely more on intermittent renewable energies, bringing many uncertainties on the electricity output to the grid. LÄS MER

  5. 19. Gate driver solutions for high power density SMPS using Silicon Carbide MOSFETs

    Master-uppsats, Mittuniversitetet/Institutionen för elektronikkonstruktion

    Författare :Farhan Akram; [2021]
    Nyckelord :SiC MOSFETs; Gate drivers; DC-DC converter; High power and efficiency power supplies;

    Sammanfattning : Discrete silicon carbide (SiC) power devices have unique characteristics that outpace those of silicon (Si) counterparts. The improved physical features have provided better faster switching, greater current densities, lower on-resistance, and temperature performances. LÄS MER

  7. 20. WIDE RANGE BI-DIRECTIONAL DC-DC CONVERTER

    Master-uppsats, Mittuniversitetet/Institutionen för elektronikkonstruktion

    Författare :Ali Rezaee; [2021]
    Nyckelord :Keywords: Bidirectional Converter; Phase Shifted Full Bridge; Soft Switching; Wide Input–WideOutput;

    Sammanfattning : Bi-directional DC-DC converters are used for applications that require a flow of energy in two directions, while a wide range converter offer efficient operation over a wide range of input and output voltages. However, an efficient technology that is both bi-directional and Wide Input Wide Output (WIWO), currently, does not currently exist. LÄS MER