Sökning: "Failure models"

Visar resultat 16 - 20 av 368 uppsatser innehållade orden Failure models.

  1. 16. Thermal Modeling and Simulationwith High Voltage Solid StateRelays for Battery DisconnectionApplications : The potential of replacing mechanical contactors with semiconductors

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :David Radisic; Johan Mårtensson; [2023]
    Nyckelord :SSR; SSCB; SiC MOSFET; BEV; Pre-charge; Solid-state relay; Solid-state circuit breaker; Electric vehicles; DC fast-charge; Simulink; BDU;

    Sammanfattning : The swift shift of the automotive industry towards electrification is primarily propelled by technological advancements in battery technology. To stay competitive and meet the new demands of the industry, there is a crucial need for novel ideas and innovation. LÄS MER

  3. 17. Dynamic Warning Signals and Time Lag Analysis for Seepage Prediction in Hydropower Dams : A Case Study of a Swedish Hydropower Plant

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Datalogi

    Författare :Lovisa Olsson; Julia Hellström; [2023]
    Nyckelord :hydropower; dam safety; dam monitoring; seepage; prediction models; data-driven methods; artificial intelligence; AI;  linear regression; Support Vector Regression; SVR; Long Short-Term Memory; LSTM;

    Sammanfattning : Hydropower is an important energy source since it is fossil-free, renewable, and controllable. Characteristics that become especially important as the reliance on intermittent energy sources increases. However, the dams for the hydropower plants are also associated with large risks as a dam failure could have fatal consequences. LÄS MER

  4. 18. Remaining Useful Life Prediction of Power Electronic Devices Using Recurrent Neural Networks

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

    Författare :Congrui Cai; [2023]
    Nyckelord :Power electronics; Prognostics and health management; Remaining useful life; Recurrent neural network; Kraftelektronik; Prognostik och hälsoledning; Återstående livslängd; Återkommande neurala nätverk;

    Sammanfattning : The growing demand for sustainable technology has led to an increased application of power electronics. As these devices are often exposed to harsh conditions, their reliability is a primary concern for both manufacturers and users. LÄS MER

  5. 19. Analytiska modeller för beräkning av tjällaster mot spontkonstruktioner

    Master-uppsats, KTH/Jord- och bergmekanik

    Författare :STAFFAN NORRTHON RISBERG; NAIMA OZIMS; [2023]
    Nyckelord :;

    Sammanfattning : I kalla klimat kan stödkonstruktioner utsättas för lastökningar till följd av tjälande jord. Tjälen bildas när vattnet i jorden fryser, och leder ofta till en volymexpansion i marken. Om tjälexpansionen förhindras bildas ett tjältryck, som kan bli så pass kraftigt att stödkonstruktioner riskerar att gå till brott. LÄS MER

  7. 20. Processing world scale air traffic data to find Near Mid-Air Collisions

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Leopold Hermansson; [2023]
    Nyckelord :Air traffic safety; Detect and Avoid; ADS-B;

    Sammanfattning : In order to increase the safety of all air travel, technologies that continueto augment the pilot's ability to avoid collisions and stay clear of danger areneeded. But, before these can be certified and deployed, their performance andpotential failure cases have to be understood. LÄS MER