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Visar resultat 11 - 15 av 67 uppsatser som matchar ovanstående sökkriterier.

  1. 11. Analysis and Performance Evaluation of a Three-phase Three-level Sparse Neutral Point Clamped Converter for Industrial Variable Speed Drives

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

    Författare :Pengpeng Sun; [2022]
    Nyckelord :Sparse Neutral Point Clamped Converter; Industrial Variable Speed Drives; Silicon IGBT; Calorimetric Measurement; Reverse Recovery Energy; Sparse Neutral Point Clamped Converter; Industriella Varvtalsstyrda Motordrifter; Silicon IGBT; Kalorimetrisk Mätning; Energi för Återhämtningsprocess;

    Sammanfattning : This thesis project focuses on the simulation, design, hardware realization, and performance evaluation of a Three-phase Three-level (3-L) Sparse Neutral Point Clamped Converter (SNPCC) for Industrial Variable Speed Drives (VSDs). The basic operating principle of the SNPCC is briefly described based on switching functions. LÄS MER

  3. 12. Konsekverna av spinoffs : En kvantitativ studie om avkastning och investeringsstrategier

    Kandidat-uppsats, Södertörns högskola/Institutionen för samhällsvetenskaper

    Författare :Patrick Lisumbu; Alex Rönning; [2022]
    Nyckelord :spinoffs; stocks; diversification; avknoppningar; avkastning; aktier; diversifiering;

    Sammanfattning : The purpose of the event study is to analyze the returns in Swedish listed companies that have carried out spinoffs between the period 2006 - 2021. This is done by measuring share price development. The method is observation. LÄS MER

  4. 13. Development of a tool to analyze back-focus characteristics of fix-focal cameras

    Master-uppsats, Lunds universitet/Innovation

    Författare :Björn Lind; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Fix-focal cameras require careful alignment of the sensor relative to the lens during assembly in order to produce a sharp image. Axis developed wide- and fish-eye network cameras are, for a number of reasons, focused at infinity when aligned. LÄS MER

  5. 14. Characterisation and Modeling of RF environment

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Patric Beas Petersson; [2022]
    Nyckelord :signal processing; passive radar; antenna array; data processing; signalbehandling; passiv radar; antennarray; databehandling;

    Sammanfattning : Devices that transmit and receive electromagnetic signals are today central to the way people communicate and acquire information from the surroundings. WiDAR, Wideband Digital Array Receiver, is the name of a new system of digital antenna array receivers, which has recently been developed at Saab in Järfälla and is the focus of this thesis. LÄS MER

  7. 15. Evaluation of overheating risks and passive cooling measures in low energy Swedish dwellings

    Master-uppsats, Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

    Författare :Sammar Kassab; Salma Aljabri; [2022]
    Nyckelord :Overheating; Passive cooling; Thermal comfort; Energy-efficient building; Building simulation; Heat wave; Residential dwellings; Occupant comfort and health; Measurement criteria.; Arts and Architecture;

    Sammanfattning : Overheating in buildings is becoming a major concern and cause for various health issues. Existing research and previous studies on the issue were examined to acquire relevant information about the definition of overheating, its possible causes, and the heath impacts it could have on human health. LÄS MER