Sökning: "variable speed operation"

Visar resultat 1 - 5 av 22 uppsatser innehållade orden variable speed operation.

  1. 1. Hanging Load Mock-Up For Experimental Setup To Test Flight System Stability

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Anthony Gundstedt; [2023]
    Nyckelord :drone; hanging; variable length; mixer matrix; PID; controller; microcontroller; RC; Telnet; I2C; FrSKY; Sbus; S.bus; Forestry; AirForestry; Swing; anti-swing; IMU; filter;

    Sammanfattning : Can we reduce disturbance, swing, and errors by delegating some of the tasks to a subsystem on the tool hanging from a drone to gain precision and dependability? This project covers developing and implementing a user-controlled prototype with an automatic control system and gripper for functionality and controlled movement in 5 DOF. AirForestry is developing a new way of working in the forestry business to provide a greener and healthier solution for the soil and the environment. LÄS MER

  3. 2. Investigation of Variable Speed Technology when Converting Hydropower Kaplan Turbines into Fixed Propeller Turbines

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Johannes Ansved; [2022]
    Nyckelord :hydropower; variable speed; kaplan; turbines; model; simulation;

    Sammanfattning : With an evolving energy system, an increased flexibility is necessary, placing additional demand on hydropower plants. New technology, in particular full size frequency converters (FSFC) and doubly fed induction machines (DFIM), allows hydropower turbines to run at different speeds than originally designed, thus making the turbine more flexible. LÄS MER

  4. 3. Optimization of Kaplan turbines for frequency regulation in hybrid hydropower plants

    Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Nayan Narkhede; [2022]
    Nyckelord :Kaplan; Kaplan turbines; frequency regulation; hybrid hydropower plants; wear and tear; guide vanes; runner blades;

    Sammanfattning : The increasing penetration of variable renewable energy sources in the Nordic Power System is causing frequency quality degradation and has increased the importance of primary frequency control provided by hydropower plants. Hydropower is the world’s largest renewable energy source. LÄS MER

  5. 4. Inclusion of Wind Turbines into Frequency Support Services : Exploring frequency stability issues and comparing regulation power market products

    Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Oskar Andersson; [2021]
    Nyckelord :Frequency Containment Reserve; Frequency Restoration Reserve; Fast Frequency Restoration; Synthetic Inertia; Variable Speed Wind Turbine;

    Sammanfattning : There is a trend in Sweden towards increasing the electricity production from renewable energy sources in the electric grid. The increased share of renewables could be seen as essential for Sweden to be able to meet the obligated climate goals. LÄS MER

  7. 5. Design, Modelling and Control of a Space UAV for Mars Exploration

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Akash Patel; [2021]
    Nyckelord :;

    Sammanfattning : Mars : The red planet has been on top in the priority list of interplanetary exploration of the solar system. The Mars exploration landers and rovers have laid the foundation of our understanding of the planet atmosphere and terrain. LÄS MER