Sökning: "short-circuit"

Visar resultat 21 - 25 av 127 uppsatser innehållade ordet short-circuit.

  1. 21. Fault Detection in Permanent Magnet Synchronous Motors using Machine Learning

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

    Författare :Alexander Lennartsson; Martina Blomberg; [2021]
    Nyckelord :PMSM; Fault Detection; AI; artificial intelligence; Machine Learning; inter turn short circuit; inter turn short fault; turn-to-turn; permanent magnet synchronous motor; short circuit; fault; avionics; airplane; aircraft;

    Sammanfattning : In the aviation industry, safety and robustness are the number one priorities, which is why they use well-tested systems such as hydraulic actuators. However, drawbacks such as high weight and maintenance have pushed the industry toward newer, electrical, actuators that are more efficient and lighter. LÄS MER

  3. 22. Fault energy implications of distributed converter interfaced generation : A case study of an underground mine grid

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

    Författare :Tommy Hjertberg; [2021]
    Nyckelord :Dispersed PEID generators; short circuit energy; arc incident energy; protective relays; fault ride through; Distribuerad omformardriven generering; kortslutningsenergi; händelseenergi; reläskydd; felgenomkörning;

    Sammanfattning : Adding Power Electronic Interfaced Devices (PEID) generation to grids is an increasing trend because of the concurrent development of better power electronic converters and a greater interest in a better utilisation of energy resources. Small and dispersed energy sources that would previously not be worth introducing into the grid is becoming more and more viable and other potential benefits such as better control of voltage levels and smoothing out load changes also spur this development. LÄS MER

  4. 23. Excitation system – simulation, tuning and evaluation

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Philip von Heideken; [2021]
    Nyckelord :;

    Sammanfattning : Swedish Electrical and Power Control AB (Svea Power) offers excitation systems for electrical production plants. An excitation system controls the electrical performance of the generator’s three phase outputs and must meet requirements set out in the business agency “Svenska Kraftnäts (SvK:s) föreskrifter, SvKFS 2005:2”. LÄS MER

  5. 24. Large Scale Analysis of Massive Deployment of Converter-based Generation equipped with Grid- forming Strategies

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

    Författare :Cristhian Carim Jimenez Saldana; [2020]
    Nyckelord :Grid-Forming; Converter-Based Generation; Voltage Source Converter VSC ; Current Limitation; Threshold-Virtual Impedance TVI ;

    Sammanfattning : To mitigate the carbon footprint and the need to fulfil the energy goals in terms of sustainability, it is required to deploy a large integration of green energies. Therefore, in the previous and the coming years, there will be a high research and technological interest in the high penetration of converter-based generation. LÄS MER

  7. 25. Finite element modelling of LV transformer winding to simulate dynamic events occurring under short circuit : In Ansys Mechanical

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Madhu Venkata Sri Prudhvi Bikkina; [2020]
    Nyckelord :Ansys Mechanical; LV winding; Power Transformer; Short-circuit; Spiraling; Torsional Mode Shapes;

    Sammanfattning : The ability to withstand a short circuit is the most essential feature of a power transformer. The most important reason to design short-circuits proof transformers is to ensure the reliability of the power grid (avoiding black outs etc.) and safety (fire and explosion in case of failure). LÄS MER