Sökning: "Varying loads"

Visar resultat 1 - 5 av 82 uppsatser innehållade orden Varying loads.

  1. 1. Drop-weight impact tests on reinforced concrete beams

    Master-uppsats, KTH/Betongbyggnad

    Författare :John Abdalnour; Milad Saliba; [2023]
    Nyckelord :;

    Sammanfattning : This master's thesis aimed to investigate the behaviour of reinforced concrete beams under dynamic loading conditions, specifically focusing on understanding shear failure. The study was conducted with KTH Royal Institute of Technology, the Swedish Fortifications Agency, and Tyréns. LÄS MER

  3. 2. Frequency Stabilization in low Inertia Systems With Battery Power Injections

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

    Författare :Leif Lundin; [2023]
    Nyckelord :;

    Sammanfattning : The challenges for the power system of the future becomes increasingly larger when large amountsof renewable energy sources are integrated, and when conventional forms of power such asnuclear power are phased out. This results in a greater difficulty in quickly deploying FrequencyContainment Reserves in the event of of power balance disturbance, to stabilize frequency andvoltage. LÄS MER

  4. 3. Kritiska vippningslaster för kompositbalkar/lättbalkar av trä

    Kandidat-uppsats, KTH/Byggteknik och design

    Författare :Jemy Abdalnour; Mohamed Ibrahim Abdirahman; [2023]
    Nyckelord :;

    Sammanfattning : This thesis has focused on the calculation of critical loads for lateral torsional buckling forthree selected wood-based composite beams with varying heights based on the availableMasonite Beams standard range. The main objective has been to investigate and compare ahand calculation model with the recommended method in Eurocode 5, as well as comparethem with results from finite element analysis. LÄS MER

  5. 4. Battery Storage as Grid Reinforcement for Peak Power Demands

    Master-uppsats, Linköpings universitet/Energisystem

    Författare :Jesper Hilleberg; [2023]
    Nyckelord :Battery Storage; Battery Energy Storage System; Grid Reinforcement; Flexibility; Lithium-ion battery; li-ion battery; Large Scale Grid Storage; BESS; Energy Storage; Peak Power Demand; Batterilagring; Batterilagringsystem; Nätförstärkning; Nätförstärkningsåtgärd; toppeffektlaster; Flexibilitet; Flexibilitetslösning; litiumjonbatteri; li-ion batteri; BESS; energilagring;

    Sammanfattning : An increased amount of intermittent electricity production, more electric vehicles (EV), and an overall electrification of society may all cause a higher variability between the balance of supply and demand on the electric grid. Battery storage has been identified as a solution to the emerging problem asit can be charged during hours of low power demand and then discharged to help meet the power demand during peak loads. LÄS MER

  7. 5. Dynamics of a CRAFT : A simulation study on a Counter Rotating vertical Axis Floating Tilting wind turbine

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Benjamin Hedlund Peters; Linda Goude; [2023]
    Nyckelord :wind power; counter rotating; contra rotating; offshore wind; floating wind power; vertical axis wind turbine; VAWT; renewable energy;

    Sammanfattning : In this thesis the Counter Rotating vertical Axis Floating Tilting wind turbine (CRAFT) has been explored by creating a simulation model in the program Simulink. The CRAFT prototype is a new type of wind turbine under development by World Wide Wind and Uppsala University with the aim to produce a large scale floating vertical axis wind turbine (VAWT) with two cone shaped counter rotating turbines. LÄS MER