Sökning: "direct drive"

Visar resultat 16 - 20 av 103 uppsatser innehållade orden direct drive.

  1. 16. Conceptual design of an electronic dockingstation and positioner for portable antenna

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Otto Egeman; Karl Westling; [2022]
    Nyckelord :Antenna; Automatic positioner; Geostationary; Docking station; Antenn; Automatisk inpekning; Geostationär; Dockningsstation;

    Sammanfattning : The presented work in this report is a master’s thesis at the machine design track at KTH Royal Institute of Technology. The work was commissioned by Ovzon through Svea Teknik AB. The T6 antenna in Ovzons antenna terminal portfolio is as of now fully manual in terms of positioning against satellites. LÄS MER

  3. 17. Magnetic and Dielectric Design of Auxiliary Power Supply for HVDC Applications : A high-frequency transformer with high power transfer capability and high voltage electrical insulation

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

    Författare :Henrik Johansson; [2022]
    Nyckelord :Auxiliary Power Supply; HVDC; Inductive Power Supply; High Voltage Insulation; High-Frequency Transformer; Hjälpkraftsförsörjning; HVDC; Induktiv Kraftförsörjning; Högspänningsisolation; Högfrekvenstransformator;

    Sammanfattning : It is anticipated that massive amounts of energy will be transferred long distances via High-Voltage Direct Current (HVDC) links in the future and the prospect of having meshed HVDC grids is envisioned, for example the European super grid. Such a power system would benefit greatly if HVDC circuit breakers could reliably clear faults within the HVDC network. LÄS MER

  4. 18. Kalman-Filter Design and Evaluation for PMSM Rotor-Temperature Estimation

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Daniel Mårtensson; [2022]
    Nyckelord :Technology and Engineering;

    Sammanfattning : The permanent magnet synchronous motor, PMSM, is an efficient electrical motor that has seen a greater prevalence in the automotive industry from the increasing demand for electrical vehicles. Managing the temperature of the permanent magnet rotor is important to optimize motor utilization and avoid hardware failures. LÄS MER

  5. 19. Small Purchases Make A Big Difference

    Magister-uppsats, Lunds universitet/Företagsekonomiska institutionen

    Författare :Alice Pettersson; Charlotte Sternberg; [2022]
    Nyckelord :FMCG; Brand Loyalty; Brand-Cause Fit; Brand Activism; Repurchase Intentions; Business and Economics;

    Sammanfattning : The high competition in the FMCG market today has led to an increased focus on retaining customers and adding value beyond the core business interest. Consequently, most brands engage in cause-related activities to drive brand loyalty. LÄS MER

  7. 20. “It’s still a north to south relationship” - A critical discourse analysis on the power of evaluative research and representations of social change within Voluntary Sustainability Standards

    Master-uppsats, Lunds universitet/LUMID International Master programme in applied International Development and Management; Lunds universitet/Institutionen för kulturgeografi och ekonomisk geografi

    Författare :Julia Vita Helena Baumeister; [2022]
    Nyckelord :Voluntary Sustainability Standards; agricultural value chains; social change; development theories; power asymmetries; power and voice; agricultural producers; Social Sciences;

    Sammanfattning : Voluntary Sustainability Standards (VSSs) build on market-based governance mechanisms to create fairer and more equitable terms of trade within smallholder-dominated agricultural value chains. Various frameworks and theoretical approaches have arisen to assess social impacts generated through VSSs; however, the findings are scattered and inconsistent. LÄS MER