Sökning: "Ångström Laboratory"

Visar resultat 1 - 5 av 21 uppsatser innehållade orden Ångström Laboratory.

  1. 1. Radiation Effects on GaN-based HEMTs for RF and Power Electronic Applications

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Wilhelm Holmberg; [2023]
    Nyckelord :High Electron Mobility Transistor; HEMT; Gallium Nitride; GaN; Silicon Carbide; SiC; Proton Radiation; Galliumnitrid; GaN; Kiselkarbid; SiC; Kisel; Si; HEMT; Transistor; Protonstrålning;

    Sammanfattning : GaN-HEMTs (Gallium Nitride-based High Electron Mobility Transistors) have, thanks to the large band gap of GaN, electrical properties that are suitable for applications of high electrical voltages, high currents, and fast switching. The large band gap also gives GaN-HEMTs a high resistance to radiation. LÄS MER

  3. 2. Small-scale wave energy converter for wave tank facility

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Samir Asseh; [2023]
    Nyckelord :Wave power; small-scale; Wave tank; facility; Renewable resources; damping; froude scaling; magnets; copper coil; Uppsala University; buoy; MATLAB; COMSOL; PTO; WEC; Electricicity generation.; Förnybar energi; Vågtank; Vågkraft;

    Sammanfattning : A small-scale wave energy converter was designed and built for teaching and academic purposes to be used at The Division for Electricity, in the Ångström Laboratory at Uppsala University. The design of the power take-off (PTO) makes use of magnets passing through a copper coil for electricity generation. LÄS MER

  4. 3. 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

  5. 4. Automated Microfluidic Reactor

    Kandidat-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Eric Juhlin; Hampus Englund; Anton Blaho Mildton; [2022]
    Nyckelord :Microfluidic Reactor;

    Sammanfattning : In this report you get to read about the goals, problems and end result, how the group took on the different areas and what boundaries we had. You will get an understanding of our background and what research we had to do. LÄS MER

  7. 5. Improvement of a load circuitfor power consumption within ananogrid application

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Hampus Hahne; [2020]
    Nyckelord :nanogrid; IGBT; MPPT; analogue technology;

    Sammanfattning : The transistion from fossile fuels to renewable energy goes in a rapidpace. A way to contribute to this process is the nanogrid applicationwith renewable energy sources. A prototyp of this application islocated on the roof of house 8 at Ångström laboratory. The ambition isto connect a wind power source to a battery bank via a MPPT device. LÄS MER