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Showing result 1 - 5 of 68 essays matching the above criteria.

  1. 1. Grey-box Modeling of Hydropower Plants for Improved Frequency Regulation : Evaluation of Double-Regulated Hydropower Turbines for Fulfillment of the New FCR-requirements

    University essay from Uppsala universitet/Elektricitetslära

    Author : Karolina Engström; Rebecca Waldenfjord; [2023]
    Keywords : Double-regulated hydroturbines; Grey-box modeling; FCR-requriements; Frequency contaminent reserve; Hydropower modeling; Dynamic stability; Dynamic performance;

    Abstract : Over the last decades, the frequency on the Nordic electrical power grid has deteriorated. Therefore, new stricter requirements are developed for the hydropower delivering regulating active power on the Frequency Containment Reserve market (FCR). READ MORE

  3. 2. Modelling and Simulation of Hydrogen Electrolyzers for Power System Applications

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Javier Vinuelas Ferrando; [2023]
    Keywords : ;

    Abstract : The rapid increase in the share of intermittent renewables in the energy mix is exacerbating the complexity of the grid stability. To facilitate the inclusion of these green technologies and achieve the climate targets set by the EU, the generation and storage of hydrogen through electrolysis may be crucial. READ MORE

  4. 3. Charging Infrastructure for Battery Electric Aircraft : A Simulation Study

    University essay from Uppsala universitet/Elektricitetslära

    Author : Algot Laurell; [2023]
    Keywords : Battery Electric Aircraft; Charging Infrastructure; Electric Aircraft;

    Abstract : Several models of battery electric aircraft are currently under development and are expected to be commercialized in the coming years. These electric aircraft are expected to require a significant amount of electrical power within a short period of time. READ MORE

  5. 4. Study Of Universal Islanding Detection Techniques In Distributed Generation Systems

    University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Author : Ochai Ochalla Danladi; [2023]
    Keywords : Distributed Generation; Islanding; Quality Factor; Resonance Frequency; Low Voltage; Medium Voltage; Electronic Power Converter; Inverter;

    Abstract : Energy security, global warming, and climate change have been a major source of global discussions and development. Likewise, the rising cost of electricity for consumers and exponential demand for energy are major factors driving the incremental growth and integration of sustainable forms of energy generation into power the system cycle. READ MORE

  6. 5. Active suspension in combat vehicles - Effect on mobility, comfort and accuracy

    University essay from KTH/Fysik

    Author : Emil Zeidlitz; [2023]
    Keywords : Applied mechanics; Complex systems; Active suspension; Tillämpad mekanik; Komplexa system; Aktivt fjädringssystem;

    Abstract : In this thesis the effect of an active suspension system versus a passive suspensionsystem utilized on a main battle tank/combat vehicle is studied. The effect oncomfort, mobility, accuracy and power draw is discussed. This is done with thegoal to study and understand if an improvement can be made using active sys-tems. READ MORE