Sökning: "dc voltage stability"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden dc voltage stability.

  1. 1. Protection of HVDC Grids Against Blackouts (Simulation)

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

    Författare :Amal Al-Ammari; Dinah Atchan; [2021]
    Nyckelord :High Voltage Direct Current HVDC ; Voltage derivative dv=dt algorithm; Traveling wave algorithm; PSCAD simulation; Multi-terminal grid; Fault detection; Threshold value; Offshore HVDC; DC breaker; Voltage collapse;

    Sammanfattning : In the search for green energy to combat climatechange, a shift from conventional energy sources such as coal,oil, and nuclear towards Renewable Energy Sources (RES) isneeded. This shift poses a threat to the stability of the powergrids as RES do not contribute with rotating mass in the system. LÄS MER

  3. 2. Control Strategies for VSC-HVDC links in Weak AC Systems

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknik

    Författare :Erik Björklund; [2019]
    Nyckelord :HVDC; VSC; voltage source converter; control theory; weak ac systems;

    Sammanfattning : In this master thesis control systems for a voltage-source converter HVDC connected to weak ac networks are investigated. HVDC stands for high voltage direct current and is a way to transfer power in the electrical power system. LÄS MER

  4. 3. Wireless charger

    Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Barry Dyi; Bruce Dondogori; Jonathan Hägerbrand; [2018]
    Nyckelord :trådlös; laddare; iphone;

    Sammanfattning : This project focuses on wireless power transmission (WPT). More specifically, the use of inductive coupling with resonance. The resonance phenomenon makes the transfer of power more efficient, through matching the inductive and capacitive reactances thus eliminating the reactive losses. LÄS MER

  5. 4. Dimensioning of a Residential Microgrid in Sweden

    Kandidat-uppsats, KTH/Skolan för arkitektur och samhällsbyggnad (ABE)

    Författare :Joakim Larsen; Tobias Tunestam; [2017]
    Nyckelord :;

    Sammanfattning : This project aims to evaluate through simulationsin Simulink whether an average power consuming, 4-personhousehold in Sweden, can be successfully supplied from amicrogrid system powered by solar panels. The goal is to achievea 48 V DC system and examine both its voltage stability and longterm power balance for stationary and transient conditions. LÄS MER

  7. 5. Dimensioning of a Residential Microgrid in Sweden

    Kandidat-uppsats, KTH/Industriell ekologi

    Författare :Joakim Larsen; Tobias Tunestam; [2017]
    Nyckelord :;

    Sammanfattning : This project aims to evaluate through simulationsin Simulink whether an average power consuming, 4-person household in Sweden, can be successfully supplied from a microgrid system powered by solar panels. The goal is to achievea 48 V DC system and examine both its voltage stability and long term power balance for stationary and transient conditions. LÄS MER