Sökning: "Transient electromagnetic"

Visar resultat 1 - 5 av 22 uppsatser innehållade orden Transient electromagnetic.

  1. 1. Electromagnetic compatibility of unmanned aircraft : Examination of legislation and evaluation of two commercial systems

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Alex Bergdahl; [2022]
    Nyckelord :Electromagnetic compatibility; Unmanned aircraft; Electromagnetic compatibility legislation;

    Sammanfattning : Electromagnetic compatibility (EMC), or the field of reducing emissions from and increasing immunity against electromagnetic interference, is an essential part of designing modern electronics. As one would expect, EMC is especially important for things such as aircraft and aviation equipment where outages or disturbances could have severe consequences. LÄS MER

  3. 2. 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

  4. 3. Mitigating SSCI in a hybrid wind and PV farm utilizing PV-STATCOM : A Swedish case study

    Master-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Isabelle Löfgren; [2022]
    Nyckelord :impedance analysis; PV-STATCOM; SSCI; SSO; SSR; sub-synchronous control interaction;

    Sammanfattning : The share of electricity generation in the power system being based on power electronics is increasing, which will impact the system in different ways, such as an increased risk for undesired interactions. An example is doubly fed induction generator (DFIG) based windfarms which have been shown to present negative resistance in (parts of) the sub-synchronous range (i. LÄS MER

  5. 4. Investigations of the Transient Luminous Events with the small satellites, balloons and ground-based instruments

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

    Författare :Safura Mirzayeva; [2022]
    Nyckelord :TLE; sprite; jet; elve; halo; lightning; lighting detection; upper-atmospheric lightning; lightning location; nanosatellite; CubeSat;

    Sammanfattning : The lightning is the natural source of electromagnetic radiation. It is an atmospheric electrical discharge.  However, since recent times, it was discovered that there are other types of lightning besides those that are visible to the naked eye. They are called TLEs (Transient Luminous Event) and take place above the clouds during thunderstorms. LÄS MER

  7. 5. Geofysisk och geologisk tolkning av kritskollors utbredning i Ystadsområdet

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :David Svensson; [2022]
    Nyckelord :Kritskollor; ATEM; Geofysik; GeoScene3D; Ystad; Skurup; Earth and Environmental Sciences;

    Sammanfattning : Kritskollor, eller stora flak av kritbergarter, transporterades subglacialt med den senaste inlandsisen reträtt och hittas idag delvis blottlagda längs den skånska sydkusten. Utanför Malmö utvanns högren krita från dessa flak fram till slutet av 1900-talet och var en viktig exportvara. LÄS MER