Essays about: "Non-linear Dynamics"

Showing result 6 - 10 of 89 essays containing the words Non-linear Dynamics.

  1. 6. 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. 7. The Revolution of Skill Acquisition in Sports: Comparing Linear and Non-Linear Pedagogical Methods to Teach Adolescents the Wide Receiver Stance and Start in American Football

    University essay from Lunds universitet/Institutionen för psykologi

    Author : Frederik Nielsen; [2023]
    Keywords : non-linear pedagogy; ecological dynamics; differential learning; deliberate practice; traditional learning; American football; Adolescents; Social Sciences;

    Abstract : In the last decade, the philosophy behind deliberate practice and traditional learning methods have received criticism for the limitations as a learning method. The purpose of this study was to compare the effects of linear and non-linear pedagogical methods for teaching the wide receiver stance and start to adolescents. READ MORE

  4. 8. Line Distance Protection in Power Grids with Variable Renewable Energy Sources : An Investigation on Time Domain Distance Protection via Parameter Estimation

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

    Author : Ludvig Ringaby; [2023]
    Keywords : Distance protection; Power system protection; Time domain distance protection; Differential Equation Algorithm; Variable renewable energy; IBR; Distansskydd; Skyddssystem i elkraftsystem; Tidsdomän distansskydd; Differentialekvationsalgoritm; Variabel förnybar energi;

    Abstract : Variable renewable energy sources typically connect to the power grid through power electronic interfaces. Increased use of such sources can cause issues for conventional distance protection. READ MORE

  5. 9. Multibody modelling of the vibrations in an aircraft engine

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Charly Mollet; [2022]
    Keywords : Vibrations; Multibody Modelling; Rolling Bearings; Rotor Dynamics; Reduction Processes; Vibrationer; multikroppsmodellering; rullingslager; rotordynamik; reducktionsprocesser;

    Abstract : During the assembly of aircraft engines, some clearance is left in the rolling bearings mainly to reduce friction. However this clearance might allow the rolling element to vibrate during flight. Indeed, unwanted vibrations called non-synchronous vibrations (NSV) appear on the data recorded by the sensors on some development engines. READ MORE

  6. 10. Quantum Landau-Lifshitz-Gilbert Dynamics of a Dimer

    University essay from Uppsala universitet/Teoretisk fysik; Uppsala universitet/Materialteori

    Author : Lee Johnson; [2022]
    Keywords : ;

    Abstract : The classical Landau-Lifshitz-Gilbert (LLG) equations are of crucialimportance in micro-magnetism, but a true quantum-mechanical descriptionwas not found until 2013. However, very few realistic quantumsystems have been modeled using it. READ MORE