Sökning: "Voltage stability"

Visar resultat 16 - 20 av 134 uppsatser innehållade orden Voltage stability.

  1. 16. Frequency Stability of Power Electronic Based Power System with 100% Renewable Energy.

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

    Författare :Abdullah Albalali; [2022]
    Nyckelord :energy storage; frequency control; synchronous generators; distributed power generation; virtual synchronous machine VSM ; PSCAD.; energilagringssystem; frekvenskontroll; synkrona generatorer; distribuerad kraftproduktion; virtuell synkron maskin; PSCAD.;

    Sammanfattning : The modern power system is aiming to progress away from conventional synchronous machine  based power generation towards converter dominated system that leads to extensively high penetration of renewable energy such as wind and PV. This transition of modern power system toward converter based renewable energy comes with new challenges as the conventional synchronous generation is being replaced by converter based power system (CBPS). LÄS MER

  3. 17. Design of LED setup for measuring tandem solar cell subcell J-V behaviour

    Kandidat-uppsats,

    Författare :Kristina Bergström; Mohammed Nour Kamalmaz; Erik Lindvall; [2022]
    Nyckelord :Tandem solar cell; LED; background light; bias; arduino; processing; subcell;

    Sammanfattning : The need to accurately measure multi-junction (MJ) tandem solar cells' subcell current-voltage characteristics is increasing due to the vital information they provide about the efficiency, stability, and longevity of the cells. These measurements are rather difficult compared to their counterpart single-layer solar cell measurements. LÄS MER

  4. 18. Voltage Stability and Reactive Power - Introduction of Intermittent Renewable Energy Sources in a Power System

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

    Författare :Erik Hagström; Tobias Jansson; [2022]
    Nyckelord :Voltage Stability; Reactive Power; Renewable Energy; Wind Power; Power Flow Analysis; MATPOWER;

    Sammanfattning : The electricity demand increases rapidly, and in order to mitigate climate change the power production needs to be renewable and free from green house gas emissions. When solar and wind power are introduced in the system, voltage instability might become a problem. LÄS MER

  5. 19. Utilizing Genetic Algorithm and Machine Learning to Optimize a Control System in Generators : Using a PID controller to damp terminal voltage oscillations

    Master-uppsats, Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

    Författare :Fredrik Strand; [2022]
    Nyckelord :AVR; AI; data-driven; GA; SVM; GPR; SVR; Ziegler-Nichols; Z-N;

    Sammanfattning : Hydropower is an important part of renewable power production in Sweden. The voltage stability of the already existing hydropower needs to be improved. One way to do this is by improving the control system that damp terminal voltage oscillations. LÄS MER

  7. 20. Analysis of condition for ALD deposition of ferroelectric HZO

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Teodor Qvint; [2022]
    Nyckelord :HZO; Ferro; ALD; Temperature; Purge time; Technology and Engineering;

    Sammanfattning : Deposition of ferroelectric hafnium zirconium oxide (HZO) on semiconductor samples with Atomic Layer Deposition (ALD) has proven to be a viable method of production. But while the physical processes of ALD deposition is relatively well know, there exists some gaps in knowledge about different parameters for the ALD and the resulting depositions. LÄS MER