Sökning: "short-circuit"

Visar resultat 16 - 20 av 127 uppsatser innehållade ordet short-circuit.

  1. 16. Small Signal Stability of Power Systems With Increased Converter Based Power Production

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

    Författare :Gustav Kjellson; Josefin Gustafsson; [2022]
    Nyckelord :Small signal stability; Power system stabilizer; Renewable energy; Grid following converters; Grid forming converters;

    Sammanfattning : The aim of this project is to analyze how increasing the share of converter-based power production in a power system affects the small signal stability. The project also aims to stabilize systems using Power System Stabilizers (PSSs), and examine the effect of two different types of power electronic converters: grid following (GFL) and grid forming (GFM). LÄS MER

  3. 17. Transmission line protection performance in presence of power electronic-interfaced devices : Impact and needed countermeasures in the Swedish transmission system

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Hanna Olofsson; [2021]
    Nyckelord :;

    Sammanfattning : The penetration level of power electronic-interfaced devices (PEID:s) in power systems isincreasing, including wind- and solar power, HVDC and FACTS devices. Fault current injectedby PEID:s is lower in magnitude, may lack or contain a reduced negative sequence componentand can have a wide range of phase angles, as opposed to fault current supplied bysynchronous generators (SG:s). LÄS MER

  4. 18. 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

  5. 19. Simulation of a Current Controller with Dead-Time Compensation

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Johanna Heide; Mattias Granström; [2021]
    Nyckelord :control theory; simulation; current controller; dead-time; dead-time compensation; pmsm; c-caller; linköping university; ABB;

    Sammanfattning : This master's thesis is divided into two parts. The first part concerns the development of a simulation model of a current controller and a physical drive unit, both implemented in Simulink with the use of legacy code and regulated with field oriented control. The second part concerns the development of a dead-time compensation algorithm. LÄS MER

  7. 20. Överspänningsskydd

    M1-uppsats, Linköpings universitet/Fordonssystem

    Författare :Jesper Hilleberg; Sam Falakeh; [2021]
    Nyckelord :Surge Protection; Surge Protection Device; Åskskydd; Överspänningsskydd; Överspänning;

    Sammanfattning : Solar Bora is a company that works to bring electricity to small villages in Africa to help them save time in cooking and other things that we nowadays forget about. Africa is the continent with the most thunder strikes in the entire world, and it is therefore common that electronics get affected by this. LÄS MER